/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:39:28,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:39:28,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:39:29,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:39:29,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:39:29,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:39:29,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:39:29,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:39:29,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:39:29,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:39:29,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:39:29,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:39:29,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:39:29,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:39:29,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:39:29,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:39:29,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:39:29,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:39:29,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:39:29,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:39:29,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:39:29,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:39:29,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:39:29,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:39:29,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:39:29,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:39:29,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:39:29,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:39:29,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:39:29,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:39:29,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:39:29,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:39:29,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:39:29,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:39:29,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:39:29,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:39:29,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:39:29,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:39:29,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:39:29,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:39:29,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:39:29,115 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 10:39:29,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:39:29,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:39:29,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:39:29,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:39:29,204 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:39:29,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:39:29,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:39:29,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:39:29,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:39:29,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:39:29,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:39:29,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:39:29,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:39:29,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:39:29,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:39:29,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:39:29,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:39:29,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:39:29,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:39:29,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:39:29,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:39:29,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:39:29,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:39:29,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:39:29,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:39:29,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:39:29,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:39:29,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:39:29,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:39:29,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:39:29,717 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:39:29,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:39:29,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/270ac0a38/6aa24d28d8b44fe6b1cef7fc5b1bd905/FLAG4569e42b0 [2020-12-23 10:39:30,470 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:39:30,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:39:30,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/270ac0a38/6aa24d28d8b44fe6b1cef7fc5b1bd905/FLAG4569e42b0 [2020-12-23 10:39:30,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/270ac0a38/6aa24d28d8b44fe6b1cef7fc5b1bd905 [2020-12-23 10:39:30,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:39:30,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:39:30,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:39:30,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:39:30,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:39:30,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:39:30" (1/1) ... [2020-12-23 10:39:30,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a57b5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:30, skipping insertion in model container [2020-12-23 10:39:30,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:39:30" (1/1) ... [2020-12-23 10:39:30,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:39:30,924 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6067~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] 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[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6163~0,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 10:39:31,193 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[3969,3982] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~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,] left hand side expression in assignment: lhs: VariableLHS[~__return_6228~0,GLOBAL] [2020-12-23 10:39:31,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:39:31,257 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6067~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] 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[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6163~0,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 10:39:31,364 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[3969,3982] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~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,] left hand side expression in assignment: lhs: VariableLHS[~__return_6228~0,GLOBAL] [2020-12-23 10:39:31,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:39:31,457 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:39:31,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31 WrapperNode [2020-12-23 10:39:31,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:39:31,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:39:31,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:39:31,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:39:31,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (1/1) ... [2020-12-23 10:39:31,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (1/1) ... [2020-12-23 10:39:31,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:39:31,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:39:31,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:39:31,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:39:31,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (1/1) ... [2020-12-23 10:39:31,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (1/1) ... [2020-12-23 10:39:31,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (1/1) ... [2020-12-23 10:39:31,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (1/1) ... [2020-12-23 10:39:31,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (1/1) ... [2020-12-23 10:39:31,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (1/1) ... [2020-12-23 10:39:31,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (1/1) ... [2020-12-23 10:39:31,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:39:31,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:39:31,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:39:31,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:39:31,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (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 10:39:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:39:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:39:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:39:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:39:32,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:39:32,447 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:39:32,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:39:32 BoogieIcfgContainer [2020-12-23 10:39:32,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:39:32,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:39:32,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:39:32,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:39:32,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:39:30" (1/3) ... [2020-12-23 10:39:32,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4948d175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:39:32, skipping insertion in model container [2020-12-23 10:39:32,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:31" (2/3) ... [2020-12-23 10:39:32,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4948d175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:39:32, skipping insertion in model container [2020-12-23 10:39:32,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:39:32" (3/3) ... [2020-12-23 10:39:32,459 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:39:32,466 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:39:32,472 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:39:32,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:39:32,522 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:39:32,522 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:39:32,523 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:39:32,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:39:32,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:39:32,523 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:39:32,523 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:39:32,523 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:39:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-12-23 10:39:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 10:39:32,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:32,549 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] [2020-12-23 10:39:32,549 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:32,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:32,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1485847759, now seen corresponding path program 1 times [2020-12-23 10:39:32,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:32,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181240595] [2020-12-23 10:39:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:32,867 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 10:39:32,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181240595] [2020-12-23 10:39:32,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:32,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:39:32,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468599531] [2020-12-23 10:39:32,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:39:32,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:32,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:39:32,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:32,894 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-12-23 10:39:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:32,962 INFO L93 Difference]: Finished difference Result 184 states and 294 transitions. [2020-12-23 10:39:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:39:32,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-23 10:39:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:32,976 INFO L225 Difference]: With dead ends: 184 [2020-12-23 10:39:32,976 INFO L226 Difference]: Without dead ends: 118 [2020-12-23 10:39:32,980 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 10:39:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-23 10:39:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-12-23 10:39:33,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-23 10:39:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2020-12-23 10:39:33,032 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 37 [2020-12-23 10:39:33,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:33,032 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2020-12-23 10:39:33,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:39:33,033 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2020-12-23 10:39:33,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 10:39:33,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:33,035 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] [2020-12-23 10:39:33,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:39:33,035 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:33,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:33,036 INFO L82 PathProgramCache]: Analyzing trace with hash -498229074, now seen corresponding path program 1 times [2020-12-23 10:39:33,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:33,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340900709] [2020-12-23 10:39:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:33,159 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 10:39:33,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340900709] [2020-12-23 10:39:33,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:33,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:39:33,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992025212] [2020-12-23 10:39:33,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:39:33,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:33,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:39:33,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:33,169 INFO L87 Difference]: Start difference. First operand 116 states and 172 transitions. Second operand 3 states. [2020-12-23 10:39:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:33,241 INFO L93 Difference]: Finished difference Result 276 states and 424 transitions. [2020-12-23 10:39:33,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:39:33,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-23 10:39:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:33,245 INFO L225 Difference]: With dead ends: 276 [2020-12-23 10:39:33,245 INFO L226 Difference]: Without dead ends: 180 [2020-12-23 10:39:33,247 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 10:39:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-23 10:39:33,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2020-12-23 10:39:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-23 10:39:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 269 transitions. [2020-12-23 10:39:33,282 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 269 transitions. Word has length 38 [2020-12-23 10:39:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:33,283 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 269 transitions. [2020-12-23 10:39:33,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:39:33,283 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 269 transitions. [2020-12-23 10:39:33,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 10:39:33,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:33,285 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] [2020-12-23 10:39:33,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:39:33,285 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:33,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:33,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1494403672, now seen corresponding path program 1 times [2020-12-23 10:39:33,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:33,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480012107] [2020-12-23 10:39:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:33,502 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 10:39:33,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480012107] [2020-12-23 10:39:33,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:33,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:33,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742988648] [2020-12-23 10:39:33,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:39:33,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:33,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:39:33,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:33,506 INFO L87 Difference]: Start difference. First operand 178 states and 269 transitions. Second operand 5 states. [2020-12-23 10:39:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:33,630 INFO L93 Difference]: Finished difference Result 596 states and 924 transitions. [2020-12-23 10:39:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:33,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-23 10:39:33,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:33,636 INFO L225 Difference]: With dead ends: 596 [2020-12-23 10:39:33,636 INFO L226 Difference]: Without dead ends: 438 [2020-12-23 10:39:33,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:33,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-12-23 10:39:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 434. [2020-12-23 10:39:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-12-23 10:39:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 669 transitions. [2020-12-23 10:39:33,739 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 669 transitions. Word has length 39 [2020-12-23 10:39:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:33,740 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 669 transitions. [2020-12-23 10:39:33,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:39:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 669 transitions. [2020-12-23 10:39:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 10:39:33,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:33,744 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] [2020-12-23 10:39:33,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:39:33,744 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:33,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:33,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1416306171, now seen corresponding path program 1 times [2020-12-23 10:39:33,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:33,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904673045] [2020-12-23 10:39:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:33,850 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 10:39:33,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904673045] [2020-12-23 10:39:33,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:33,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:39:33,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247044664] [2020-12-23 10:39:33,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:39:33,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:33,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:39:33,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:33,860 INFO L87 Difference]: Start difference. First operand 434 states and 669 transitions. Second operand 3 states. [2020-12-23 10:39:33,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:33,951 INFO L93 Difference]: Finished difference Result 1130 states and 1751 transitions. [2020-12-23 10:39:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:39:33,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-23 10:39:33,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:33,958 INFO L225 Difference]: With dead ends: 1130 [2020-12-23 10:39:33,958 INFO L226 Difference]: Without dead ends: 716 [2020-12-23 10:39:33,964 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 10:39:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-12-23 10:39:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 714. [2020-12-23 10:39:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2020-12-23 10:39:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1089 transitions. [2020-12-23 10:39:34,091 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1089 transitions. Word has length 39 [2020-12-23 10:39:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:34,092 INFO L481 AbstractCegarLoop]: Abstraction has 714 states and 1089 transitions. [2020-12-23 10:39:34,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:39:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1089 transitions. [2020-12-23 10:39:34,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 10:39:34,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:34,094 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] [2020-12-23 10:39:34,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:39:34,095 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:34,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:34,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1267879647, now seen corresponding path program 1 times [2020-12-23 10:39:34,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:34,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287319198] [2020-12-23 10:39:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:34,245 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 10:39:34,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287319198] [2020-12-23 10:39:34,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:34,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:34,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453587442] [2020-12-23 10:39:34,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:39:34,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:34,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:39:34,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:39:34,252 INFO L87 Difference]: Start difference. First operand 714 states and 1089 transitions. Second operand 6 states. [2020-12-23 10:39:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:34,605 INFO L93 Difference]: Finished difference Result 2740 states and 4200 transitions. [2020-12-23 10:39:34,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:34,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-12-23 10:39:34,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:34,619 INFO L225 Difference]: With dead ends: 2740 [2020-12-23 10:39:34,619 INFO L226 Difference]: Without dead ends: 2046 [2020-12-23 10:39:34,621 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 10:39:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2020-12-23 10:39:34,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2042. [2020-12-23 10:39:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2042 states. [2020-12-23 10:39:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3113 transitions. [2020-12-23 10:39:34,812 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3113 transitions. Word has length 41 [2020-12-23 10:39:34,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:34,812 INFO L481 AbstractCegarLoop]: Abstraction has 2042 states and 3113 transitions. [2020-12-23 10:39:34,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:39:34,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3113 transitions. [2020-12-23 10:39:34,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 10:39:34,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:34,814 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] [2020-12-23 10:39:34,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:39:34,815 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:34,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:34,815 INFO L82 PathProgramCache]: Analyzing trace with hash -938328058, now seen corresponding path program 1 times [2020-12-23 10:39:34,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:34,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601261402] [2020-12-23 10:39:34,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:34,894 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 10:39:34,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601261402] [2020-12-23 10:39:34,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:34,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:34,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498625203] [2020-12-23 10:39:34,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:39:34,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:34,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:39:34,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:34,897 INFO L87 Difference]: Start difference. First operand 2042 states and 3113 transitions. Second operand 5 states. [2020-12-23 10:39:35,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:35,360 INFO L93 Difference]: Finished difference Result 8186 states and 12493 transitions. [2020-12-23 10:39:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:35,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-23 10:39:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:35,394 INFO L225 Difference]: With dead ends: 8186 [2020-12-23 10:39:35,394 INFO L226 Difference]: Without dead ends: 6164 [2020-12-23 10:39:35,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:39:35,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6164 states. [2020-12-23 10:39:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6164 to 4062. [2020-12-23 10:39:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4062 states. [2020-12-23 10:39:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 6061 transitions. [2020-12-23 10:39:35,786 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 6061 transitions. Word has length 41 [2020-12-23 10:39:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:35,786 INFO L481 AbstractCegarLoop]: Abstraction has 4062 states and 6061 transitions. [2020-12-23 10:39:35,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:39:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 6061 transitions. [2020-12-23 10:39:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 10:39:35,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:35,788 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] [2020-12-23 10:39:35,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:39:35,788 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:35,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:35,789 INFO L82 PathProgramCache]: Analyzing trace with hash 957144957, now seen corresponding path program 1 times [2020-12-23 10:39:35,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:35,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364524042] [2020-12-23 10:39:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:35,863 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 10:39:35,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364524042] [2020-12-23 10:39:35,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:35,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:35,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3180435] [2020-12-23 10:39:35,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:39:35,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:35,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:39:35,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:35,866 INFO L87 Difference]: Start difference. First operand 4062 states and 6061 transitions. Second operand 5 states. [2020-12-23 10:39:36,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:36,575 INFO L93 Difference]: Finished difference Result 8392 states and 12390 transitions. [2020-12-23 10:39:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:39:36,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-23 10:39:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:36,618 INFO L225 Difference]: With dead ends: 8392 [2020-12-23 10:39:36,619 INFO L226 Difference]: Without dead ends: 8390 [2020-12-23 10:39:36,622 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 10:39:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2020-12-23 10:39:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 4350. [2020-12-23 10:39:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4350 states. [2020-12-23 10:39:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 6349 transitions. [2020-12-23 10:39:37,114 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 6349 transitions. Word has length 42 [2020-12-23 10:39:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:37,115 INFO L481 AbstractCegarLoop]: Abstraction has 4350 states and 6349 transitions. [2020-12-23 10:39:37,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:39:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 6349 transitions. [2020-12-23 10:39:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 10:39:37,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:37,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:37,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:39:37,119 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash -382704394, now seen corresponding path program 1 times [2020-12-23 10:39:37,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:37,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570155956] [2020-12-23 10:39:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:37,202 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 10:39:37,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570155956] [2020-12-23 10:39:37,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:37,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:39:37,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740470884] [2020-12-23 10:39:37,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:39:37,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:37,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:39:37,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:37,204 INFO L87 Difference]: Start difference. First operand 4350 states and 6349 transitions. Second operand 3 states. [2020-12-23 10:39:37,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:37,729 INFO L93 Difference]: Finished difference Result 10402 states and 15167 transitions. [2020-12-23 10:39:37,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:39:37,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-23 10:39:37,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:37,798 INFO L225 Difference]: With dead ends: 10402 [2020-12-23 10:39:37,798 INFO L226 Difference]: Without dead ends: 6072 [2020-12-23 10:39:37,806 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 10:39:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2020-12-23 10:39:38,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 6070. [2020-12-23 10:39:38,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6070 states. [2020-12-23 10:39:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 8777 transitions. [2020-12-23 10:39:38,413 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 8777 transitions. Word has length 43 [2020-12-23 10:39:38,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:38,414 INFO L481 AbstractCegarLoop]: Abstraction has 6070 states and 8777 transitions. [2020-12-23 10:39:38,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:39:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 8777 transitions. [2020-12-23 10:39:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-23 10:39:38,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:38,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:38,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:39:38,418 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:38,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:38,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1624116797, now seen corresponding path program 1 times [2020-12-23 10:39:38,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:38,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236335471] [2020-12-23 10:39:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:39:38,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236335471] [2020-12-23 10:39:38,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616786383] [2020-12-23 10:39:38,583 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 10:39:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:38,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 10:39:38,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:39:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:39:38,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:39:38,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2020-12-23 10:39:38,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214580478] [2020-12-23 10:39:38,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:39:38,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:38,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:39:38,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:39:38,811 INFO L87 Difference]: Start difference. First operand 6070 states and 8777 transitions. Second operand 6 states. [2020-12-23 10:39:39,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:39,948 INFO L93 Difference]: Finished difference Result 15037 states and 21837 transitions. [2020-12-23 10:39:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:39,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-23 10:39:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:39,981 INFO L225 Difference]: With dead ends: 15037 [2020-12-23 10:39:39,981 INFO L226 Difference]: Without dead ends: 10707 [2020-12-23 10:39:39,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:39:40,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10707 states. [2020-12-23 10:39:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10707 to 10062. [2020-12-23 10:39:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10062 states. [2020-12-23 10:39:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10062 states to 10062 states and 14433 transitions. [2020-12-23 10:39:41,069 INFO L78 Accepts]: Start accepts. Automaton has 10062 states and 14433 transitions. Word has length 60 [2020-12-23 10:39:41,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:41,069 INFO L481 AbstractCegarLoop]: Abstraction has 10062 states and 14433 transitions. [2020-12-23 10:39:41,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:39:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 10062 states and 14433 transitions. [2020-12-23 10:39:41,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:39:41,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:41,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:41,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 10:39:41,289 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1000125924, now seen corresponding path program 1 times [2020-12-23 10:39:41,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:41,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929004140] [2020-12-23 10:39:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:41,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 10:39:41,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929004140] [2020-12-23 10:39:41,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:41,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:41,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256630818] [2020-12-23 10:39:41,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:39:41,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:41,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:39:41,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:41,372 INFO L87 Difference]: Start difference. First operand 10062 states and 14433 transitions. Second operand 5 states. [2020-12-23 10:39:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:42,577 INFO L93 Difference]: Finished difference Result 18244 states and 26327 transitions. [2020-12-23 10:39:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:42,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-23 10:39:42,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:42,611 INFO L225 Difference]: With dead ends: 18244 [2020-12-23 10:39:42,611 INFO L226 Difference]: Without dead ends: 14612 [2020-12-23 10:39:42,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:39:42,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14612 states. [2020-12-23 10:39:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14612 to 13150. [2020-12-23 10:39:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13150 states. [2020-12-23 10:39:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13150 states to 13150 states and 18801 transitions. [2020-12-23 10:39:43,771 INFO L78 Accepts]: Start accepts. Automaton has 13150 states and 18801 transitions. Word has length 61 [2020-12-23 10:39:43,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:43,771 INFO L481 AbstractCegarLoop]: Abstraction has 13150 states and 18801 transitions. [2020-12-23 10:39:43,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:39:43,771 INFO L276 IsEmpty]: Start isEmpty. Operand 13150 states and 18801 transitions. [2020-12-23 10:39:43,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:39:43,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:43,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:43,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:39:43,775 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:43,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:43,776 INFO L82 PathProgramCache]: Analyzing trace with hash -876556853, now seen corresponding path program 1 times [2020-12-23 10:39:43,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:43,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509323157] [2020-12-23 10:39:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:43,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509323157] [2020-12-23 10:39:43,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:43,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:39:43,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536269037] [2020-12-23 10:39:43,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:39:43,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:43,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:39:43,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:43,824 INFO L87 Difference]: Start difference. First operand 13150 states and 18801 transitions. Second operand 3 states. [2020-12-23 10:39:44,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:44,906 INFO L93 Difference]: Finished difference Result 20870 states and 29699 transitions. [2020-12-23 10:39:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:39:44,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 10:39:44,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:44,945 INFO L225 Difference]: With dead ends: 20870 [2020-12-23 10:39:44,945 INFO L226 Difference]: Without dead ends: 13598 [2020-12-23 10:39:44,959 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 10:39:44,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13598 states. [2020-12-23 10:39:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13598 to 11651. [2020-12-23 10:39:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11651 states. [2020-12-23 10:39:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11651 states to 11651 states and 16319 transitions. [2020-12-23 10:39:45,853 INFO L78 Accepts]: Start accepts. Automaton has 11651 states and 16319 transitions. Word has length 61 [2020-12-23 10:39:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:45,853 INFO L481 AbstractCegarLoop]: Abstraction has 11651 states and 16319 transitions. [2020-12-23 10:39:45,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:39:45,853 INFO L276 IsEmpty]: Start isEmpty. Operand 11651 states and 16319 transitions. [2020-12-23 10:39:45,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:39:45,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:45,856 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:39:45,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:39:45,857 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:45,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:45,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1922561508, now seen corresponding path program 1 times [2020-12-23 10:39:45,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:45,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772364406] [2020-12-23 10:39:45,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:45,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772364406] [2020-12-23 10:39:45,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:45,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:39:45,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257095888] [2020-12-23 10:39:45,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:39:45,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:45,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:39:45,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:45,905 INFO L87 Difference]: Start difference. First operand 11651 states and 16319 transitions. Second operand 3 states. [2020-12-23 10:39:46,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:46,966 INFO L93 Difference]: Finished difference Result 27943 states and 39033 transitions. [2020-12-23 10:39:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:39:46,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 10:39:46,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:47,004 INFO L225 Difference]: With dead ends: 27943 [2020-12-23 10:39:47,004 INFO L226 Difference]: Without dead ends: 19248 [2020-12-23 10:39:47,017 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 10:39:47,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19248 states. [2020-12-23 10:39:48,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19248 to 19197. [2020-12-23 10:39:48,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19197 states. [2020-12-23 10:39:48,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 26467 transitions. [2020-12-23 10:39:48,370 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 26467 transitions. Word has length 61 [2020-12-23 10:39:48,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:48,370 INFO L481 AbstractCegarLoop]: Abstraction has 19197 states and 26467 transitions. [2020-12-23 10:39:48,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:39:48,370 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 26467 transitions. [2020-12-23 10:39:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:39:48,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:48,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:48,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:39:48,375 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:48,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1875177684, now seen corresponding path program 1 times [2020-12-23 10:39:48,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:48,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363852013] [2020-12-23 10:39:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 10:39:48,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363852013] [2020-12-23 10:39:48,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:48,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:48,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051266463] [2020-12-23 10:39:48,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:39:48,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:48,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:39:48,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:39:48,449 INFO L87 Difference]: Start difference. First operand 19197 states and 26467 transitions. Second operand 6 states. [2020-12-23 10:39:51,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:51,984 INFO L93 Difference]: Finished difference Result 65202 states and 89464 transitions. [2020-12-23 10:39:51,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:51,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-12-23 10:39:51,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:52,069 INFO L225 Difference]: With dead ends: 65202 [2020-12-23 10:39:52,070 INFO L226 Difference]: Without dead ends: 46065 [2020-12-23 10:39:52,109 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 10:39:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46065 states. [2020-12-23 10:39:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46065 to 45639. [2020-12-23 10:39:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45639 states. [2020-12-23 10:39:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45639 states to 45639 states and 62277 transitions. [2020-12-23 10:39:55,624 INFO L78 Accepts]: Start accepts. Automaton has 45639 states and 62277 transitions. Word has length 61 [2020-12-23 10:39:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:55,624 INFO L481 AbstractCegarLoop]: Abstraction has 45639 states and 62277 transitions. [2020-12-23 10:39:55,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:39:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 45639 states and 62277 transitions. [2020-12-23 10:39:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:39:55,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:55,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:55,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:39:55,631 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:55,631 INFO L82 PathProgramCache]: Analyzing trace with hash -802284721, now seen corresponding path program 1 times [2020-12-23 10:39:55,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:55,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820338256] [2020-12-23 10:39:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 10:39:55,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820338256] [2020-12-23 10:39:55,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:55,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:55,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870635068] [2020-12-23 10:39:55,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:39:55,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:55,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:39:55,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:55,717 INFO L87 Difference]: Start difference. First operand 45639 states and 62277 transitions. Second operand 5 states. [2020-12-23 10:39:59,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:59,699 INFO L93 Difference]: Finished difference Result 68516 states and 94461 transitions. [2020-12-23 10:39:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:59,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-23 10:39:59,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:59,795 INFO L225 Difference]: With dead ends: 68516 [2020-12-23 10:39:59,795 INFO L226 Difference]: Without dead ends: 61438 [2020-12-23 10:39:59,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:59,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61438 states. [2020-12-23 10:40:03,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61438 to 52427. [2020-12-23 10:40:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52427 states. [2020-12-23 10:40:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52427 states to 52427 states and 71593 transitions. [2020-12-23 10:40:03,796 INFO L78 Accepts]: Start accepts. Automaton has 52427 states and 71593 transitions. Word has length 61 [2020-12-23 10:40:03,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:03,796 INFO L481 AbstractCegarLoop]: Abstraction has 52427 states and 71593 transitions. [2020-12-23 10:40:03,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:40:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 52427 states and 71593 transitions. [2020-12-23 10:40:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 10:40:03,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:03,801 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:40:03,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:40:03,802 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:03,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:03,802 INFO L82 PathProgramCache]: Analyzing trace with hash -237073659, now seen corresponding path program 1 times [2020-12-23 10:40:03,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:03,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595293189] [2020-12-23 10:40:03,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:40:03,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595293189] [2020-12-23 10:40:03,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:03,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:40:03,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467448155] [2020-12-23 10:40:03,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:40:03,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:03,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:40:03,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:40:03,882 INFO L87 Difference]: Start difference. First operand 52427 states and 71593 transitions. Second operand 5 states. [2020-12-23 10:40:08,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:08,662 INFO L93 Difference]: Finished difference Result 77722 states and 107184 transitions. [2020-12-23 10:40:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:40:08,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-12-23 10:40:08,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:08,749 INFO L225 Difference]: With dead ends: 77722 [2020-12-23 10:40:08,749 INFO L226 Difference]: Without dead ends: 66265 [2020-12-23 10:40:08,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:40:08,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66265 states. [2020-12-23 10:40:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66265 to 61311. [2020-12-23 10:40:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61311 states. [2020-12-23 10:40:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61311 states to 61311 states and 83481 transitions. [2020-12-23 10:40:13,400 INFO L78 Accepts]: Start accepts. Automaton has 61311 states and 83481 transitions. Word has length 62 [2020-12-23 10:40:13,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:13,401 INFO L481 AbstractCegarLoop]: Abstraction has 61311 states and 83481 transitions. [2020-12-23 10:40:13,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:40:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 61311 states and 83481 transitions. [2020-12-23 10:40:13,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:40:13,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:13,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:13,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:40:13,407 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:13,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:13,407 INFO L82 PathProgramCache]: Analyzing trace with hash -88290541, now seen corresponding path program 1 times [2020-12-23 10:40:13,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:13,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323790279] [2020-12-23 10:40:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:13,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323790279] [2020-12-23 10:40:13,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:13,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:40:13,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492367050] [2020-12-23 10:40:13,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:40:13,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:13,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:40:13,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:40:13,457 INFO L87 Difference]: Start difference. First operand 61311 states and 83481 transitions. Second operand 3 states. [2020-12-23 10:40:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:18,912 INFO L93 Difference]: Finished difference Result 134114 states and 181915 transitions. [2020-12-23 10:40:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:40:18,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:40:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:19,027 INFO L225 Difference]: With dead ends: 134114 [2020-12-23 10:40:19,028 INFO L226 Difference]: Without dead ends: 79961 [2020-12-23 10:40:19,078 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 10:40:19,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79961 states. [2020-12-23 10:40:24,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79961 to 76836. [2020-12-23 10:40:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76836 states. [2020-12-23 10:40:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76836 states to 76836 states and 102857 transitions. [2020-12-23 10:40:24,887 INFO L78 Accepts]: Start accepts. Automaton has 76836 states and 102857 transitions. Word has length 64 [2020-12-23 10:40:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:24,887 INFO L481 AbstractCegarLoop]: Abstraction has 76836 states and 102857 transitions. [2020-12-23 10:40:24,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:40:24,887 INFO L276 IsEmpty]: Start isEmpty. Operand 76836 states and 102857 transitions. [2020-12-23 10:40:24,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 10:40:24,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:24,894 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:24,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 10:40:24,894 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:24,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1387170523, now seen corresponding path program 1 times [2020-12-23 10:40:24,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:24,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900000397] [2020-12-23 10:40:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:24,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900000397] [2020-12-23 10:40:24,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113603485] [2020-12-23 10:40:24,966 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:40:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:25,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 10:40:25,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:40:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:25,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:40:25,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-23 10:40:25,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434802374] [2020-12-23 10:40:25,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 10:40:25,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:25,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 10:40:25,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 10:40:25,510 INFO L87 Difference]: Start difference. First operand 76836 states and 102857 transitions. Second operand 11 states. [2020-12-23 10:40:36,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:36,351 INFO L93 Difference]: Finished difference Result 181749 states and 243239 transitions. [2020-12-23 10:40:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 10:40:36,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-12-23 10:40:36,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:36,690 INFO L225 Difference]: With dead ends: 181749 [2020-12-23 10:40:36,691 INFO L226 Difference]: Without dead ends: 126460 [2020-12-23 10:40:36,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 10:40:36,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126460 states. [2020-12-23 10:40:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126460 to 78582. [2020-12-23 10:40:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78582 states. [2020-12-23 10:40:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78582 states to 78582 states and 105719 transitions. [2020-12-23 10:40:43,746 INFO L78 Accepts]: Start accepts. Automaton has 78582 states and 105719 transitions. Word has length 66 [2020-12-23 10:40:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:43,746 INFO L481 AbstractCegarLoop]: Abstraction has 78582 states and 105719 transitions. [2020-12-23 10:40:43,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 10:40:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 78582 states and 105719 transitions. [2020-12-23 10:40:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 10:40:43,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:43,754 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:40:43,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 10:40:43,968 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:43,969 INFO L82 PathProgramCache]: Analyzing trace with hash -929496895, now seen corresponding path program 1 times [2020-12-23 10:40:43,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:43,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890312158] [2020-12-23 10:40:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:44,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890312158] [2020-12-23 10:40:44,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887730707] [2020-12-23 10:40:44,073 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:40:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:44,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 10:40:44,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:40:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:44,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:40:44,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-23 10:40:44,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362587331] [2020-12-23 10:40:44,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 10:40:44,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:44,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 10:40:44,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 10:40:44,351 INFO L87 Difference]: Start difference. First operand 78582 states and 105719 transitions. Second operand 11 states. [2020-12-23 10:40:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:54,483 INFO L93 Difference]: Finished difference Result 162580 states and 217329 transitions. [2020-12-23 10:40:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 10:40:54,484 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-23 10:40:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:54,828 INFO L225 Difference]: With dead ends: 162580 [2020-12-23 10:40:54,829 INFO L226 Difference]: Without dead ends: 105084 [2020-12-23 10:40:54,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 10:40:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105084 states. [2020-12-23 10:41:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105084 to 78464. [2020-12-23 10:41:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78464 states. [2020-12-23 10:41:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78464 states to 78464 states and 104889 transitions. [2020-12-23 10:41:02,418 INFO L78 Accepts]: Start accepts. Automaton has 78464 states and 104889 transitions. Word has length 67 [2020-12-23 10:41:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:41:02,418 INFO L481 AbstractCegarLoop]: Abstraction has 78464 states and 104889 transitions. [2020-12-23 10:41:02,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 10:41:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 78464 states and 104889 transitions. [2020-12-23 10:41:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 10:41:02,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:41:02,424 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:41:02,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 10:41:02,625 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:41:02,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:41:02,626 INFO L82 PathProgramCache]: Analyzing trace with hash -2073252700, now seen corresponding path program 1 times [2020-12-23 10:41:02,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:41:02,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266878397] [2020-12-23 10:41:02,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:41:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:41:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:41:02,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266878397] [2020-12-23 10:41:02,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989140979] [2020-12-23 10:41:02,947 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:41:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:41:03,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 10:41:03,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:41:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:41:03,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:41:03,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-23 10:41:03,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728238151] [2020-12-23 10:41:03,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 10:41:03,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:41:03,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 10:41:03,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 10:41:03,232 INFO L87 Difference]: Start difference. First operand 78464 states and 104889 transitions. Second operand 11 states. [2020-12-23 10:41:17,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:41:17,173 INFO L93 Difference]: Finished difference Result 180165 states and 239284 transitions. [2020-12-23 10:41:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 10:41:17,173 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-23 10:41:17,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:41:17,380 INFO L225 Difference]: With dead ends: 180165 [2020-12-23 10:41:17,381 INFO L226 Difference]: Without dead ends: 131999 [2020-12-23 10:41:17,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 10:41:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131999 states. [2020-12-23 10:41:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131999 to 86650. [2020-12-23 10:41:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86650 states. [2020-12-23 10:41:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86650 states to 86650 states and 115456 transitions. [2020-12-23 10:41:27,300 INFO L78 Accepts]: Start accepts. Automaton has 86650 states and 115456 transitions. Word has length 67 [2020-12-23 10:41:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:41:27,300 INFO L481 AbstractCegarLoop]: Abstraction has 86650 states and 115456 transitions. [2020-12-23 10:41:27,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 10:41:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 86650 states and 115456 transitions. [2020-12-23 10:41:27,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 10:41:27,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:41:27,307 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] [2020-12-23 10:41:27,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:41:27,508 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:41:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:41:27,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1719826038, now seen corresponding path program 1 times [2020-12-23 10:41:27,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:41:27,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387321173] [2020-12-23 10:41:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:41:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:41:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:41:27,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387321173] [2020-12-23 10:41:27,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:41:27,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:41:27,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783381556] [2020-12-23 10:41:27,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:41:27,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:41:27,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:41:27,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:41:27,591 INFO L87 Difference]: Start difference. First operand 86650 states and 115456 transitions. Second operand 3 states. [2020-12-23 10:41:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:41:34,249 INFO L93 Difference]: Finished difference Result 97470 states and 129109 transitions. [2020-12-23 10:41:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:41:34,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 10:41:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:41:34,334 INFO L225 Difference]: With dead ends: 97470 [2020-12-23 10:41:34,335 INFO L226 Difference]: Without dead ends: 63560 [2020-12-23 10:41:34,364 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 10:41:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63560 states. [2020-12-23 10:41:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63560 to 63541. [2020-12-23 10:41:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63541 states. [2020-12-23 10:41:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63541 states to 63541 states and 82998 transitions. [2020-12-23 10:41:41,085 INFO L78 Accepts]: Start accepts. Automaton has 63541 states and 82998 transitions. Word has length 69 [2020-12-23 10:41:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:41:41,086 INFO L481 AbstractCegarLoop]: Abstraction has 63541 states and 82998 transitions. [2020-12-23 10:41:41,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:41:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 63541 states and 82998 transitions. [2020-12-23 10:41:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 10:41:41,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:41:41,092 INFO L422 BasicCegarLoop]: trace histogram [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 10:41:41,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 10:41:41,092 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:41:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:41:41,093 INFO L82 PathProgramCache]: Analyzing trace with hash 379264655, now seen corresponding path program 1 times [2020-12-23 10:41:41,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:41:41,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894427101] [2020-12-23 10:41:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:41:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:41:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:41:41,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894427101] [2020-12-23 10:41:41,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248653521] [2020-12-23 10:41:41,336 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:41:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:41:41,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 10:41:41,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:41:41,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 10:41:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:41:42,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:41:42,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 20 [2020-12-23 10:41:42,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982940437] [2020-12-23 10:41:42,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-23 10:41:42,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:41:42,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-23 10:41:42,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-12-23 10:41:42,389 INFO L87 Difference]: Start difference. First operand 63541 states and 82998 transitions. Second operand 20 states. [2020-12-23 10:41:43,119 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-23 10:41:43,329 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-12-23 10:41:43,637 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-23 10:41:44,073 WARN L197 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-23 10:41:44,566 WARN L197 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2020-12-23 10:41:44,921 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-12-23 10:41:45,530 WARN L197 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2020-12-23 10:41:46,056 WARN L197 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2020-12-23 10:41:46,591 WARN L197 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2020-12-23 10:41:47,115 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-23 10:41:47,410 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-12-23 10:41:47,661 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-23 10:41:48,275 WARN L197 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2020-12-23 10:41:48,830 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-23 10:41:49,256 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-23 10:41:49,548 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-23 10:41:49,940 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-23 10:41:50,215 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-12-23 10:41:50,549 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-12-23 10:41:50,815 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-23 10:41:51,366 WARN L197 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-23 10:41:51,666 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-12-23 10:41:52,205 WARN L197 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2020-12-23 10:41:52,756 WARN L197 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2020-12-23 10:41:53,044 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-12-23 10:41:53,340 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-23 10:41:53,757 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-23 10:41:54,315 WARN L197 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-23 10:41:54,613 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-12-23 10:41:55,200 WARN L197 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-23 10:41:55,850 WARN L197 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-12-23 10:41:56,466 WARN L197 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-23 10:41:56,779 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-23 10:41:57,113 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-12-23 10:41:57,758 WARN L197 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2020-12-23 10:41:58,015 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-23 10:41:58,612 WARN L197 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-23 10:41:59,244 WARN L197 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-12-23 10:41:59,869 WARN L197 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2020-12-23 10:42:00,203 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-12-23 10:42:00,746 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-12-23 10:42:01,050 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-23 10:42:01,424 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-12-23 10:42:02,085 WARN L197 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-23 10:42:02,770 WARN L197 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-12-23 10:42:03,030 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-23 10:42:03,379 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-23 10:42:04,015 WARN L197 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-23 10:42:04,808 WARN L197 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2020-12-23 10:42:05,596 WARN L197 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2020-12-23 10:42:06,290 WARN L197 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2020-12-23 10:42:06,902 WARN L197 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-23 10:42:07,255 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-23 10:42:07,615 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-12-23 10:42:08,234 WARN L197 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 104 [2020-12-23 10:42:08,578 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-23 10:42:09,323 WARN L197 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2020-12-23 10:42:09,715 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-23 10:42:10,370 WARN L197 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-23 10:42:11,108 WARN L197 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-23 10:42:11,950 WARN L197 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-12-23 10:42:12,809 WARN L197 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-23 10:42:13,124 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-23 10:42:13,959 WARN L197 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-12-23 10:42:14,643 WARN L197 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-12-23 10:42:15,365 WARN L197 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2020-12-23 10:42:16,041 WARN L197 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-12-23 10:42:16,897 WARN L197 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2020-12-23 10:42:17,696 WARN L197 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-23 10:42:18,079 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-23 10:42:18,817 WARN L197 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-12-23 10:42:19,777 WARN L197 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2020-12-23 10:42:20,588 WARN L197 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-23 10:42:21,306 WARN L197 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-23 10:42:22,319 WARN L197 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 130 [2020-12-23 10:42:22,701 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-23 10:42:23,183 WARN L197 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-23 10:42:24,100 WARN L197 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-12-23 10:42:24,882 WARN L197 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-12-23 10:42:25,797 WARN L197 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 121 [2020-12-23 10:42:26,623 WARN L197 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 107 [2020-12-23 10:42:27,582 WARN L197 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-23 10:42:28,362 WARN L197 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-23 10:42:28,895 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-12-23 10:42:29,784 WARN L197 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-23 10:42:30,724 WARN L197 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-23 10:42:31,480 WARN L197 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2020-12-23 10:42:32,519 WARN L197 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-23 10:42:33,487 WARN L197 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-23 10:42:34,576 WARN L197 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-12-23 10:42:35,789 WARN L197 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 138 DAG size of output: 130 [2020-12-23 10:42:36,788 WARN L197 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-23 10:42:37,874 WARN L197 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-23 10:42:39,096 WARN L197 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-23 10:42:40,374 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2020-12-23 10:42:41,500 WARN L197 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-23 10:42:42,760 WARN L197 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-12-23 10:42:44,028 WARN L197 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-23 10:42:45,642 WARN L197 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-12-23 10:42:47,075 WARN L197 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2020-12-23 10:42:48,166 WARN L197 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-12-23 10:42:49,697 WARN L197 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2020-12-23 10:42:51,189 WARN L197 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-23 10:42:52,813 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 112 DAG size of output: 112 [2020-12-23 10:42:54,201 WARN L197 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-23 10:42:56,875 WARN L197 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2020-12-23 10:42:57,650 WARN L197 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-12-23 10:42:59,171 WARN L197 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-12-23 10:43:00,244 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-12-23 10:43:01,047 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-23 10:43:02,542 WARN L197 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-12-23 10:43:04,677 WARN L197 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-23 10:43:06,524 WARN L197 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2020-12-23 10:43:08,034 WARN L197 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-23 10:43:10,047 WARN L197 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2020-12-23 10:43:11,857 WARN L197 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 106 DAG size of output: 106 [2020-12-23 10:43:13,684 WARN L197 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-12-23 10:43:14,689 WARN L197 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-23 10:43:16,193 WARN L197 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-12-23 10:43:17,795 WARN L197 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-12-23 10:43:18,910 WARN L197 SmtUtils]: Spent 914.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-12-23 10:43:20,362 WARN L197 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-12-23 10:43:22,042 WARN L197 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-12-23 10:43:23,366 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-23 10:43:24,256 WARN L197 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-12-23 10:43:25,919 WARN L197 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-12-23 10:43:26,689 WARN L197 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-23 10:43:28,229 WARN L197 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-23 10:43:29,797 WARN L197 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-23 10:43:31,428 WARN L197 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2020-12-23 10:43:32,437 WARN L197 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-12-23 10:43:33,557 WARN L197 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-12-23 10:43:34,563 WARN L197 SmtUtils]: Spent 872.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-12-23 10:43:36,448 WARN L197 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-23 10:43:37,330 WARN L197 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-23 10:43:39,268 WARN L197 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 103 DAG size of output: 95