/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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:47:39,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:47:39,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:47:39,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:47:39,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:47:39,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:47:39,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:47:39,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:47:39,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:47:39,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:47:39,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:47:39,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:47:39,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:47:39,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:47:39,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:47:39,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:47:39,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:47:39,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:47:39,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:47:39,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:47:39,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:47:39,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:47:39,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:47:39,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:47:39,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:47:39,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:47:39,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:47:39,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:47:39,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:47:39,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:47:39,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:47:39,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:47:39,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:47:39,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:47:39,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:47:39,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:47:39,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:47:39,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:47:39,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:47:39,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:47:39,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:47:39,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 10:47:39,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:47:39,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:47:39,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:47:39,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:47:39,396 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:47:39,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:47:39,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:47:39,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:47:39,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:47:39,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:47:39,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:47:39,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:47:39,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:47:39,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:47:39,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:47:39,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:47:39,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:47:39,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:47:39,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:47:39,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:47:39,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:47:39,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:47:39,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:47:39,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:47:39,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:47:39,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:47:39,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:47:39,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:47:39,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:47:39,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:47:39,834 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:47:39,835 INFO L432 ainManager$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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:47:39,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ef931b6f4/d81a132ae06f44138afc24108fb8570f/FLAGd2e83c2d1 [2020-12-23 10:47:40,595 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:47:40,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:47:40,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ef931b6f4/d81a132ae06f44138afc24108fb8570f/FLAGd2e83c2d1 [2020-12-23 10:47:40,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ef931b6f4/d81a132ae06f44138afc24108fb8570f [2020-12-23 10:47:40,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:47:40,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:47:40,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:47:40,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:47:40,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:47:40,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:47:40" (1/1) ... [2020-12-23 10:47:40,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae94d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:40, skipping insertion in model container [2020-12-23 10:47:40,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:47:40" (1/1) ... [2020-12-23 10:47:40,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:47:40,971 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[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_10566~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_10692~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:47:41,215 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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4973,4986] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] 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[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~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_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~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_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2020-12-23 10:47:41,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:47:41,266 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[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_10566~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_10692~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:47:41,317 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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4973,4986] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] 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[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~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_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~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_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2020-12-23 10:47:41,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:47:41,380 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:47:41,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41 WrapperNode [2020-12-23 10:47:41,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:47:41,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:47:41,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:47:41,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:47:41,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (1/1) ... [2020-12-23 10:47:41,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (1/1) ... [2020-12-23 10:47:41,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:47:41,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:47:41,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:47:41,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:47:41,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (1/1) ... [2020-12-23 10:47:41,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (1/1) ... [2020-12-23 10:47:41,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (1/1) ... [2020-12-23 10:47:41,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (1/1) ... [2020-12-23 10:47:41,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (1/1) ... [2020-12-23 10:47:41,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (1/1) ... [2020-12-23 10:47:41,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (1/1) ... [2020-12-23 10:47:41,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:47:41,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:47:41,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:47:41,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:47:41,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:47:41,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:47:41,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:47:41,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:47:41,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:47:42,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:47:42,459 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:47:42,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:47:42 BoogieIcfgContainer [2020-12-23 10:47:42,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:47:42,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:47:42,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:47:42,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:47:42,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:47:40" (1/3) ... [2020-12-23 10:47:42,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a7d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:47:42, skipping insertion in model container [2020-12-23 10:47:42,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:47:41" (2/3) ... [2020-12-23 10:47:42,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a7d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:47:42, skipping insertion in model container [2020-12-23 10:47:42,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:47:42" (3/3) ... [2020-12-23 10:47:42,472 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:47:42,480 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:47:42,486 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:47:42,506 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:47:42,536 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:47:42,537 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:47:42,537 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:47:42,537 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:47:42,537 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:47:42,538 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:47:42,538 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:47:42,538 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:47:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-12-23 10:47:42,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 10:47:42,570 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:42,571 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] [2020-12-23 10:47:42,571 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:42,578 INFO L82 PathProgramCache]: Analyzing trace with hash -656787439, now seen corresponding path program 1 times [2020-12-23 10:47:42,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:42,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584535295] [2020-12-23 10:47:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:47:43,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584535295] [2020-12-23 10:47:43,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:43,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:47:43,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484138922] [2020-12-23 10:47:43,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:47:43,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:43,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:47:43,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:43,106 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 3 states. [2020-12-23 10:47:43,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:43,186 INFO L93 Difference]: Finished difference Result 251 states and 401 transitions. [2020-12-23 10:47:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:47:43,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-23 10:47:43,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:43,213 INFO L225 Difference]: With dead ends: 251 [2020-12-23 10:47:43,213 INFO L226 Difference]: Without dead ends: 165 [2020-12-23 10:47:43,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-12-23 10:47:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2020-12-23 10:47:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-23 10:47:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2020-12-23 10:47:43,285 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 48 [2020-12-23 10:47:43,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:47:43,286 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2020-12-23 10:47:43,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:47:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2020-12-23 10:47:43,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 10:47:43,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:43,289 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] [2020-12-23 10:47:43,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:47:43,290 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:43,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:43,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1525314343, now seen corresponding path program 1 times [2020-12-23 10:47:43,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:43,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980992115] [2020-12-23 10:47:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:47:43,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980992115] [2020-12-23 10:47:43,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:43,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:47:43,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140752708] [2020-12-23 10:47:43,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:47:43,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:43,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:47:43,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:43,491 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. Second operand 3 states. [2020-12-23 10:47:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:43,570 INFO L93 Difference]: Finished difference Result 403 states and 623 transitions. [2020-12-23 10:47:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:47:43,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-23 10:47:43,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:43,574 INFO L225 Difference]: With dead ends: 403 [2020-12-23 10:47:43,574 INFO L226 Difference]: Without dead ends: 267 [2020-12-23 10:47:43,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-12-23 10:47:43,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2020-12-23 10:47:43,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-12-23 10:47:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 404 transitions. [2020-12-23 10:47:43,611 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 404 transitions. Word has length 49 [2020-12-23 10:47:43,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:47:43,615 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 404 transitions. [2020-12-23 10:47:43,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:47:43,616 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 404 transitions. [2020-12-23 10:47:43,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 10:47:43,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:43,618 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] [2020-12-23 10:47:43,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:47:43,621 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:43,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:43,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1721693138, now seen corresponding path program 1 times [2020-12-23 10:47:43,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:43,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138699070] [2020-12-23 10:47:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:47:43,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138699070] [2020-12-23 10:47:43,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:43,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:47:43,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199153031] [2020-12-23 10:47:43,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:47:43,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:43,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:47:43,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:43,781 INFO L87 Difference]: Start difference. First operand 265 states and 404 transitions. Second operand 3 states. [2020-12-23 10:47:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:43,881 INFO L93 Difference]: Finished difference Result 677 states and 1054 transitions. [2020-12-23 10:47:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:47:43,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-23 10:47:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:43,890 INFO L225 Difference]: With dead ends: 677 [2020-12-23 10:47:43,891 INFO L226 Difference]: Without dead ends: 439 [2020-12-23 10:47:43,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:43,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-12-23 10:47:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2020-12-23 10:47:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-12-23 10:47:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 672 transitions. [2020-12-23 10:47:43,948 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 672 transitions. Word has length 50 [2020-12-23 10:47:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:47:43,948 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 672 transitions. [2020-12-23 10:47:43,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:47:43,949 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 672 transitions. [2020-12-23 10:47:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 10:47:43,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:43,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:47:43,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:47:43,951 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:43,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2073243904, now seen corresponding path program 1 times [2020-12-23 10:47:43,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:43,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727846738] [2020-12-23 10:47:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:47:44,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727846738] [2020-12-23 10:47:44,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:44,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:47:44,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682509896] [2020-12-23 10:47:44,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:47:44,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:44,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:47:44,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:47:44,211 INFO L87 Difference]: Start difference. First operand 437 states and 672 transitions. Second operand 6 states. [2020-12-23 10:47:44,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:44,453 INFO L93 Difference]: Finished difference Result 1873 states and 2916 transitions. [2020-12-23 10:47:44,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:47:44,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-23 10:47:44,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:44,463 INFO L225 Difference]: With dead ends: 1873 [2020-12-23 10:47:44,463 INFO L226 Difference]: Without dead ends: 1463 [2020-12-23 10:47:44,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:47:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-12-23 10:47:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1457. [2020-12-23 10:47:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-12-23 10:47:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2260 transitions. [2020-12-23 10:47:44,598 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2260 transitions. Word has length 51 [2020-12-23 10:47:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:47:44,599 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2260 transitions. [2020-12-23 10:47:44,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:47:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2260 transitions. [2020-12-23 10:47:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 10:47:44,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:44,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:47:44,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:47:44,602 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:44,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:44,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1744489678, now seen corresponding path program 1 times [2020-12-23 10:47:44,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:44,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917343777] [2020-12-23 10:47:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:47:44,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917343777] [2020-12-23 10:47:44,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:44,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:47:44,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967006509] [2020-12-23 10:47:44,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:47:44,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:44,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:47:44,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:44,668 INFO L87 Difference]: Start difference. First operand 1457 states and 2260 transitions. Second operand 3 states. [2020-12-23 10:47:44,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:44,925 INFO L93 Difference]: Finished difference Result 3901 states and 6054 transitions. [2020-12-23 10:47:44,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:47:44,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-23 10:47:44,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:44,942 INFO L225 Difference]: With dead ends: 3901 [2020-12-23 10:47:44,943 INFO L226 Difference]: Without dead ends: 2471 [2020-12-23 10:47:44,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2020-12-23 10:47:45,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2469. [2020-12-23 10:47:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2020-12-23 10:47:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3788 transitions. [2020-12-23 10:47:45,142 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3788 transitions. Word has length 53 [2020-12-23 10:47:45,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:47:45,143 INFO L481 AbstractCegarLoop]: Abstraction has 2469 states and 3788 transitions. [2020-12-23 10:47:45,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:47:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3788 transitions. [2020-12-23 10:47:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 10:47:45,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:45,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:47:45,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:47:45,150 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:45,152 INFO L82 PathProgramCache]: Analyzing trace with hash 333389623, now seen corresponding path program 1 times [2020-12-23 10:47:45,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:45,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495901245] [2020-12-23 10:47:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:47:45,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495901245] [2020-12-23 10:47:45,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:45,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:47:45,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686500038] [2020-12-23 10:47:45,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:47:45,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:45,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:47:45,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:47:45,291 INFO L87 Difference]: Start difference. First operand 2469 states and 3788 transitions. Second operand 6 states. [2020-12-23 10:47:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:46,035 INFO L93 Difference]: Finished difference Result 9627 states and 14783 transitions. [2020-12-23 10:47:46,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:47:46,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-23 10:47:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:46,080 INFO L225 Difference]: With dead ends: 9627 [2020-12-23 10:47:46,080 INFO L226 Difference]: Without dead ends: 7185 [2020-12-23 10:47:46,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:47:46,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7185 states. [2020-12-23 10:47:46,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7185 to 7181. [2020-12-23 10:47:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7181 states. [2020-12-23 10:47:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7181 states to 7181 states and 10972 transitions. [2020-12-23 10:47:46,699 INFO L78 Accepts]: Start accepts. Automaton has 7181 states and 10972 transitions. Word has length 53 [2020-12-23 10:47:46,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:47:46,700 INFO L481 AbstractCegarLoop]: Abstraction has 7181 states and 10972 transitions. [2020-12-23 10:47:46,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:47:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7181 states and 10972 transitions. [2020-12-23 10:47:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 10:47:46,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:46,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:47:46,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:47:46,702 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:46,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:46,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2108233586, now seen corresponding path program 1 times [2020-12-23 10:47:46,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:46,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439921851] [2020-12-23 10:47:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:47:46,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439921851] [2020-12-23 10:47:46,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:46,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:47:46,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45536027] [2020-12-23 10:47:46,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:47:46,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:46,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:47:46,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:47:46,825 INFO L87 Difference]: Start difference. First operand 7181 states and 10972 transitions. Second operand 6 states. [2020-12-23 10:47:48,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:48,505 INFO L93 Difference]: Finished difference Result 32719 states and 50025 transitions. [2020-12-23 10:47:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:47:48,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-23 10:47:48,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:48,639 INFO L225 Difference]: With dead ends: 32719 [2020-12-23 10:47:48,639 INFO L226 Difference]: Without dead ends: 25565 [2020-12-23 10:47:48,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:47:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25565 states. [2020-12-23 10:47:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25565 to 14333. [2020-12-23 10:47:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14333 states. [2020-12-23 10:47:50,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14333 states to 14333 states and 21532 transitions. [2020-12-23 10:47:50,199 INFO L78 Accepts]: Start accepts. Automaton has 14333 states and 21532 transitions. Word has length 53 [2020-12-23 10:47:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:47:50,201 INFO L481 AbstractCegarLoop]: Abstraction has 14333 states and 21532 transitions. [2020-12-23 10:47:50,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:47:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 14333 states and 21532 transitions. [2020-12-23 10:47:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 10:47:50,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:50,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:47:50,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:47:50,204 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:50,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:50,205 INFO L82 PathProgramCache]: Analyzing trace with hash 911275449, now seen corresponding path program 1 times [2020-12-23 10:47:50,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:50,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664616871] [2020-12-23 10:47:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:47:50,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664616871] [2020-12-23 10:47:50,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:50,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:47:50,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209506274] [2020-12-23 10:47:50,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:47:50,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:50,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:47:50,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:47:50,317 INFO L87 Difference]: Start difference. First operand 14333 states and 21532 transitions. Second operand 5 states. [2020-12-23 10:47:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:52,324 INFO L93 Difference]: Finished difference Result 29407 states and 43805 transitions. [2020-12-23 10:47:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:47:52,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-23 10:47:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:52,417 INFO L225 Difference]: With dead ends: 29407 [2020-12-23 10:47:52,417 INFO L226 Difference]: Without dead ends: 29405 [2020-12-23 10:47:52,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:47:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29405 states. [2020-12-23 10:47:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29405 to 15101. [2020-12-23 10:47:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15101 states. [2020-12-23 10:47:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15101 states to 15101 states and 22300 transitions. [2020-12-23 10:47:53,870 INFO L78 Accepts]: Start accepts. Automaton has 15101 states and 22300 transitions. Word has length 54 [2020-12-23 10:47:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:47:53,870 INFO L481 AbstractCegarLoop]: Abstraction has 15101 states and 22300 transitions. [2020-12-23 10:47:53,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:47:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand 15101 states and 22300 transitions. [2020-12-23 10:47:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-23 10:47:53,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:53,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:47:53,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:47:53,872 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:53,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:53,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1804659102, now seen corresponding path program 1 times [2020-12-23 10:47:53,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:53,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091474577] [2020-12-23 10:47:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:47:53,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091474577] [2020-12-23 10:47:53,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:53,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:47:53,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658511994] [2020-12-23 10:47:53,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:47:53,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:53,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:47:53,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:53,952 INFO L87 Difference]: Start difference. First operand 15101 states and 22300 transitions. Second operand 3 states. [2020-12-23 10:47:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:55,413 INFO L93 Difference]: Finished difference Result 36727 states and 54200 transitions. [2020-12-23 10:47:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:47:55,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-23 10:47:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:55,473 INFO L225 Difference]: With dead ends: 36727 [2020-12-23 10:47:55,474 INFO L226 Difference]: Without dead ends: 21653 [2020-12-23 10:47:55,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21653 states. [2020-12-23 10:47:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21653 to 21483. [2020-12-23 10:47:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21483 states. [2020-12-23 10:47:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21483 states to 21483 states and 31422 transitions. [2020-12-23 10:47:57,158 INFO L78 Accepts]: Start accepts. Automaton has 21483 states and 31422 transitions. Word has length 55 [2020-12-23 10:47:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:47:57,158 INFO L481 AbstractCegarLoop]: Abstraction has 21483 states and 31422 transitions. [2020-12-23 10:47:57,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:47:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 21483 states and 31422 transitions. [2020-12-23 10:47:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 10:47:57,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:57,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:47:57,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:47:57,168 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:57,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:57,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1080794896, now seen corresponding path program 1 times [2020-12-23 10:47:57,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:57,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404862940] [2020-12-23 10:47:57,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:47:57,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404862940] [2020-12-23 10:47:57,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:57,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:47:57,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665547923] [2020-12-23 10:47:57,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:47:57,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:57,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:47:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:57,240 INFO L87 Difference]: Start difference. First operand 21483 states and 31422 transitions. Second operand 3 states. [2020-12-23 10:47:59,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:59,031 INFO L93 Difference]: Finished difference Result 40897 states and 59696 transitions. [2020-12-23 10:47:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:47:59,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 10:47:59,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:59,103 INFO L225 Difference]: With dead ends: 40897 [2020-12-23 10:47:59,104 INFO L226 Difference]: Without dead ends: 29135 [2020-12-23 10:47:59,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:47:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29135 states. [2020-12-23 10:48:01,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29135 to 27465. [2020-12-23 10:48:01,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27465 states. [2020-12-23 10:48:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27465 states to 27465 states and 39634 transitions. [2020-12-23 10:48:01,150 INFO L78 Accepts]: Start accepts. Automaton has 27465 states and 39634 transitions. Word has length 77 [2020-12-23 10:48:01,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:48:01,151 INFO L481 AbstractCegarLoop]: Abstraction has 27465 states and 39634 transitions. [2020-12-23 10:48:01,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:48:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 27465 states and 39634 transitions. [2020-12-23 10:48:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 10:48:01,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:48:01,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:48:01,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:48:01,160 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:48:01,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:48:01,161 INFO L82 PathProgramCache]: Analyzing trace with hash -795887881, now seen corresponding path program 1 times [2020-12-23 10:48:01,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:48:01,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784065592] [2020-12-23 10:48:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:48:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:48:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:48:01,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784065592] [2020-12-23 10:48:01,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:48:01,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:48:01,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791902273] [2020-12-23 10:48:01,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:48:01,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:48:01,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:48:01,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:48:01,226 INFO L87 Difference]: Start difference. First operand 27465 states and 39634 transitions. Second operand 3 states. [2020-12-23 10:48:03,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:48:03,294 INFO L93 Difference]: Finished difference Result 42858 states and 61547 transitions. [2020-12-23 10:48:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:48:03,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 10:48:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:48:03,359 INFO L225 Difference]: With dead ends: 42858 [2020-12-23 10:48:03,360 INFO L226 Difference]: Without dead ends: 29055 [2020-12-23 10:48:03,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:48:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29055 states. [2020-12-23 10:48:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29055 to 27740. [2020-12-23 10:48:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27740 states. [2020-12-23 10:48:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27740 states to 27740 states and 39387 transitions. [2020-12-23 10:48:05,434 INFO L78 Accepts]: Start accepts. Automaton has 27740 states and 39387 transitions. Word has length 77 [2020-12-23 10:48:05,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:48:05,434 INFO L481 AbstractCegarLoop]: Abstraction has 27740 states and 39387 transitions. [2020-12-23 10:48:05,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:48:05,434 INFO L276 IsEmpty]: Start isEmpty. Operand 27740 states and 39387 transitions. [2020-12-23 10:48:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 10:48:05,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:48:05,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:48:05,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:48:05,446 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:48:05,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:48:05,447 INFO L82 PathProgramCache]: Analyzing trace with hash 129285715, now seen corresponding path program 1 times [2020-12-23 10:48:05,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:48:05,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110128687] [2020-12-23 10:48:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:48:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:48:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 10:48:05,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110128687] [2020-12-23 10:48:05,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:48:05,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:48:05,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762066028] [2020-12-23 10:48:05,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:48:05,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:48:05,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:48:05,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:48:05,542 INFO L87 Difference]: Start difference. First operand 27740 states and 39387 transitions. Second operand 6 states. [2020-12-23 10:48:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:48:09,035 INFO L93 Difference]: Finished difference Result 61614 states and 88642 transitions. [2020-12-23 10:48:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:48:09,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-23 10:48:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:48:09,104 INFO L225 Difference]: With dead ends: 61614 [2020-12-23 10:48:09,104 INFO L226 Difference]: Without dead ends: 49743 [2020-12-23 10:48:09,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 10:48:09,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49743 states. [2020-12-23 10:48:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49743 to 37975. [2020-12-23 10:48:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37975 states. [2020-12-23 10:48:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37975 states to 37975 states and 53950 transitions. [2020-12-23 10:48:12,179 INFO L78 Accepts]: Start accepts. Automaton has 37975 states and 53950 transitions. Word has length 77 [2020-12-23 10:48:12,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:48:12,180 INFO L481 AbstractCegarLoop]: Abstraction has 37975 states and 53950 transitions. [2020-12-23 10:48:12,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:48:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 37975 states and 53950 transitions. [2020-12-23 10:48:12,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 10:48:12,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:48:12,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:48:12,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:48:12,193 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:48:12,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:48:12,193 INFO L82 PathProgramCache]: Analyzing trace with hash -938810521, now seen corresponding path program 1 times [2020-12-23 10:48:12,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:48:12,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567687139] [2020-12-23 10:48:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:48:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:48:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 10:48:12,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567687139] [2020-12-23 10:48:12,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:48:12,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:48:12,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643936205] [2020-12-23 10:48:12,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:48:12,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:48:12,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:48:12,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:48:12,263 INFO L87 Difference]: Start difference. First operand 37975 states and 53950 transitions. Second operand 5 states. [2020-12-23 10:48:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:48:16,930 INFO L93 Difference]: Finished difference Result 96694 states and 137083 transitions. [2020-12-23 10:48:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:48:16,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-12-23 10:48:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:48:17,010 INFO L225 Difference]: With dead ends: 96694 [2020-12-23 10:48:17,010 INFO L226 Difference]: Without dead ends: 58795 [2020-12-23 10:48:17,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:48:17,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58795 states. [2020-12-23 10:48:21,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58795 to 58493. [2020-12-23 10:48:21,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58493 states. [2020-12-23 10:48:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58493 states to 58493 states and 82438 transitions. [2020-12-23 10:48:21,867 INFO L78 Accepts]: Start accepts. Automaton has 58493 states and 82438 transitions. Word has length 77 [2020-12-23 10:48:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:48:21,867 INFO L481 AbstractCegarLoop]: Abstraction has 58493 states and 82438 transitions. [2020-12-23 10:48:21,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:48:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 58493 states and 82438 transitions. [2020-12-23 10:48:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 10:48:21,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:48:21,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:48:21,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:48:21,877 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:48:21,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:48:21,878 INFO L82 PathProgramCache]: Analyzing trace with hash 966415180, now seen corresponding path program 1 times [2020-12-23 10:48:21,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:48:21,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249442593] [2020-12-23 10:48:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:48:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:48:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 10:48:21,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249442593] [2020-12-23 10:48:22,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:48:22,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:48:22,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185193563] [2020-12-23 10:48:22,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:48:22,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:48:22,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:48:22,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:48:22,001 INFO L87 Difference]: Start difference. First operand 58493 states and 82438 transitions. Second operand 6 states. [2020-12-23 10:48:29,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:48:29,237 INFO L93 Difference]: Finished difference Result 102019 states and 145344 transitions. [2020-12-23 10:48:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:48:29,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-23 10:48:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:48:29,351 INFO L225 Difference]: With dead ends: 102019 [2020-12-23 10:48:29,351 INFO L226 Difference]: Without dead ends: 90550 [2020-12-23 10:48:29,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:48:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90550 states. [2020-12-23 10:48:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90550 to 69725. [2020-12-23 10:48:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69725 states. [2020-12-23 10:48:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69725 states to 69725 states and 98350 transitions. [2020-12-23 10:48:35,153 INFO L78 Accepts]: Start accepts. Automaton has 69725 states and 98350 transitions. Word has length 77 [2020-12-23 10:48:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:48:35,153 INFO L481 AbstractCegarLoop]: Abstraction has 69725 states and 98350 transitions. [2020-12-23 10:48:35,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:48:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 69725 states and 98350 transitions. [2020-12-23 10:48:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 10:48:35,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:48:35,161 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:48:35,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:48:35,162 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:48:35,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:48:35,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1183325764, now seen corresponding path program 1 times [2020-12-23 10:48:35,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:48:35,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104939433] [2020-12-23 10:48:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:48:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:48:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 10:48:35,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104939433] [2020-12-23 10:48:35,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:48:35,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:48:35,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015039085] [2020-12-23 10:48:35,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:48:35,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:48:35,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:48:35,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:48:35,406 INFO L87 Difference]: Start difference. First operand 69725 states and 98350 transitions. Second operand 6 states. [2020-12-23 10:48:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:48:49,424 INFO L93 Difference]: Finished difference Result 241856 states and 340111 transitions. [2020-12-23 10:48:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:48:49,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-23 10:48:49,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:48:49,719 INFO L225 Difference]: With dead ends: 241856 [2020-12-23 10:48:49,719 INFO L226 Difference]: Without dead ends: 172225 [2020-12-23 10:48:49,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:48:49,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172225 states. [2020-12-23 10:49:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172225 to 168929. [2020-12-23 10:49:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168929 states. [2020-12-23 10:49:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168929 states to 168929 states and 236826 transitions. [2020-12-23 10:49:03,979 INFO L78 Accepts]: Start accepts. Automaton has 168929 states and 236826 transitions. Word has length 77 [2020-12-23 10:49:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:49:03,979 INFO L481 AbstractCegarLoop]: Abstraction has 168929 states and 236826 transitions. [2020-12-23 10:49:03,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:49:03,979 INFO L276 IsEmpty]: Start isEmpty. Operand 168929 states and 236826 transitions. [2020-12-23 10:49:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 10:49:03,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:03,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:49:03,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:49:03,989 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:03,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:03,989 INFO L82 PathProgramCache]: Analyzing trace with hash 335632055, now seen corresponding path program 1 times [2020-12-23 10:49:03,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:03,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740028767] [2020-12-23 10:49:03,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 10:49:04,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740028767] [2020-12-23 10:49:04,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:49:04,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:49:04,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512805814] [2020-12-23 10:49:04,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:49:04,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:49:04,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:49:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:49:04,101 INFO L87 Difference]: Start difference. First operand 168929 states and 236826 transitions. Second operand 6 states. [2020-12-23 10:49:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:49:22,322 INFO L93 Difference]: Finished difference Result 248516 states and 351281 transitions. [2020-12-23 10:49:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:49:22,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-23 10:49:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:49:22,944 INFO L225 Difference]: With dead ends: 248516 [2020-12-23 10:49:22,945 INFO L226 Difference]: Without dead ends: 231486 [2020-12-23 10:49:23,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:49:23,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231486 states. [2020-12-23 10:49:38,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231486 to 185669. [2020-12-23 10:49:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185669 states. [2020-12-23 10:49:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185669 states to 185669 states and 260406 transitions. [2020-12-23 10:49:39,546 INFO L78 Accepts]: Start accepts. Automaton has 185669 states and 260406 transitions. Word has length 77 [2020-12-23 10:49:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:49:39,546 INFO L481 AbstractCegarLoop]: Abstraction has 185669 states and 260406 transitions. [2020-12-23 10:49:39,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:49:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 185669 states and 260406 transitions. [2020-12-23 10:49:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:49:39,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:39,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:49:39,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 10:49:39,556 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:39,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:39,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1064257775, now seen corresponding path program 1 times [2020-12-23 10:49:39,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:39,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008250870] [2020-12-23 10:49:39,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:49:39,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008250870] [2020-12-23 10:49:39,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082711826] [2020-12-23 10:49:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:49:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:39,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 10:49:39,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:49:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:49:40,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:49:40,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 10:49:40,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527194583] [2020-12-23 10:49:40,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 10:49:40,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:49:40,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 10:49:40,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-23 10:49:40,365 INFO L87 Difference]: Start difference. First operand 185669 states and 260406 transitions. Second operand 12 states. [2020-12-23 10:49:41,294 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25