/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:45:34,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:45:34,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:45:34,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:45:34,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:45:34,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:45:34,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:45:34,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:45:34,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:45:34,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:45:34,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:45:34,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:45:34,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:45:34,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:45:34,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:45:34,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:45:34,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:45:34,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:45:34,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:45:34,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:45:34,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:45:34,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:45:34,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:45:34,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:45:34,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:45:34,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:45:34,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:45:34,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:45:34,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:45:34,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:45:34,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:45:34,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:45:34,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:45:34,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:45:34,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:45:34,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:45:34,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:45:34,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:45:34,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:45:34,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:45:34,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:45:34,193 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 10:45:34,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:45:34,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:45:34,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:45:34,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:45:34,254 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:45:34,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:45:34,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:45:34,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:45:34,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:45:34,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:45:34,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:45:34,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:45:34,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:45:34,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:45:34,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:45:34,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:45:34,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:45:34,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:45:34,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:45:34,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:45:34,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:45:34,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:45:34,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:45:34,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:45:34,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:45:34,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:45:34,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:45:34,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:45:34,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:45:34,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:45:34,664 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:45:34,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:45:34,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f6ca065bc/c8342c8cae584f6e8fa51526c96b0fb5/FLAG08f752108 [2020-12-23 10:45:35,504 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:45:35,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:45:35,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f6ca065bc/c8342c8cae584f6e8fa51526c96b0fb5/FLAG08f752108 [2020-12-23 10:45:35,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f6ca065bc/c8342c8cae584f6e8fa51526c96b0fb5 [2020-12-23 10:45:35,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:45:35,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:45:35,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:45:35,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:45:35,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:45:35,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:45:35" (1/1) ... [2020-12-23 10:45:35,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2386f43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:35, skipping insertion in model container [2020-12-23 10:45:35,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:45:35" (1/1) ... [2020-12-23 10:45:35,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:45:35,917 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19141~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19276~0,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 10:45:36,148 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4973,4986] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] [2020-12-23 10:45:36,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:45:36,198 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19141~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19276~0,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 10:45:36,300 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4973,4986] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] [2020-12-23 10:45:36,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:45:36,402 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:45:36,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36 WrapperNode [2020-12-23 10:45:36,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:45:36,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:45:36,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:45:36,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:45:36,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (1/1) ... [2020-12-23 10:45:36,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (1/1) ... [2020-12-23 10:45:36,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:45:36,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:45:36,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:45:36,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:45:36,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (1/1) ... [2020-12-23 10:45:36,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (1/1) ... [2020-12-23 10:45:36,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (1/1) ... [2020-12-23 10:45:36,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (1/1) ... [2020-12-23 10:45:36,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (1/1) ... [2020-12-23 10:45:36,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (1/1) ... [2020-12-23 10:45:36,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (1/1) ... [2020-12-23 10:45:36,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:45:36,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:45:36,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:45:36,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:45:36,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (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 10:45:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:45:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:45:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:45:36,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:45:37,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:45:37,565 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:45:37,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:45:37 BoogieIcfgContainer [2020-12-23 10:45:37,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:45:37,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:45:37,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:45:37,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:45:37,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:45:35" (1/3) ... [2020-12-23 10:45:37,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65872f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:45:37, skipping insertion in model container [2020-12-23 10:45:37,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:45:36" (2/3) ... [2020-12-23 10:45:37,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65872f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:45:37, skipping insertion in model container [2020-12-23 10:45:37,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:45:37" (3/3) ... [2020-12-23 10:45:37,576 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:45:37,583 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:45:37,589 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:45:37,609 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:45:37,638 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:45:37,639 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:45:37,639 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:45:37,639 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:45:37,639 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:45:37,639 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:45:37,639 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:45:37,640 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:45:37,658 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-12-23 10:45:37,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 10:45:37,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:37,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:37,669 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:37,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:37,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2117585175, now seen corresponding path program 1 times [2020-12-23 10:45:37,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:37,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163978409] [2020-12-23 10:45:37,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:45:38,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163978409] [2020-12-23 10:45:38,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:45:38,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:45:38,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528182255] [2020-12-23 10:45:38,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:45:38,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:38,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:45:38,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:45:38,113 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 3 states. [2020-12-23 10:45:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:38,228 INFO L93 Difference]: Finished difference Result 266 states and 425 transitions. [2020-12-23 10:45:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:45:38,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-23 10:45:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:38,245 INFO L225 Difference]: With dead ends: 266 [2020-12-23 10:45:38,245 INFO L226 Difference]: Without dead ends: 175 [2020-12-23 10:45:38,249 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 10:45:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-23 10:45:38,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-12-23 10:45:38,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-23 10:45:38,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 259 transitions. [2020-12-23 10:45:38,316 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 259 transitions. Word has length 49 [2020-12-23 10:45:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:38,317 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 259 transitions. [2020-12-23 10:45:38,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:45:38,317 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 259 transitions. [2020-12-23 10:45:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 10:45:38,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:38,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:38,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:45:38,320 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:38,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:38,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1419109229, now seen corresponding path program 1 times [2020-12-23 10:45:38,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:38,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207434666] [2020-12-23 10:45:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:38,485 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 10:45:38,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207434666] [2020-12-23 10:45:38,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:45:38,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:45:38,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474967993] [2020-12-23 10:45:38,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:45:38,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:38,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:45:38,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:45:38,490 INFO L87 Difference]: Start difference. First operand 173 states and 259 transitions. Second operand 3 states. [2020-12-23 10:45:38,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:38,566 INFO L93 Difference]: Finished difference Result 433 states and 671 transitions. [2020-12-23 10:45:38,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:45:38,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-23 10:45:38,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:38,570 INFO L225 Difference]: With dead ends: 433 [2020-12-23 10:45:38,570 INFO L226 Difference]: Without dead ends: 287 [2020-12-23 10:45:38,572 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 10:45:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-23 10:45:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2020-12-23 10:45:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-12-23 10:45:38,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 436 transitions. [2020-12-23 10:45:38,617 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 436 transitions. Word has length 50 [2020-12-23 10:45:38,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:38,618 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 436 transitions. [2020-12-23 10:45:38,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:45:38,618 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 436 transitions. [2020-12-23 10:45:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 10:45:38,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:38,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:38,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:45:38,624 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:38,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1570665396, now seen corresponding path program 1 times [2020-12-23 10:45:38,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:38,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714659983] [2020-12-23 10:45:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:38,784 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 10:45:38,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714659983] [2020-12-23 10:45:38,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:45:38,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:45:38,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192069530] [2020-12-23 10:45:38,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:45:38,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:38,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:45:38,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:45:38,788 INFO L87 Difference]: Start difference. First operand 285 states and 436 transitions. Second operand 3 states. [2020-12-23 10:45:38,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:38,879 INFO L93 Difference]: Finished difference Result 737 states and 1150 transitions. [2020-12-23 10:45:38,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:45:38,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-23 10:45:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:38,884 INFO L225 Difference]: With dead ends: 737 [2020-12-23 10:45:38,884 INFO L226 Difference]: Without dead ends: 479 [2020-12-23 10:45:38,886 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 10:45:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-12-23 10:45:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2020-12-23 10:45:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-12-23 10:45:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 736 transitions. [2020-12-23 10:45:38,941 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 736 transitions. Word has length 51 [2020-12-23 10:45:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:38,942 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 736 transitions. [2020-12-23 10:45:38,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:45:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 736 transitions. [2020-12-23 10:45:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 10:45:38,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:38,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:38,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:45:38,944 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:38,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:38,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1205622842, now seen corresponding path program 1 times [2020-12-23 10:45:38,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:38,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152773937] [2020-12-23 10:45:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:39,193 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 10:45:39,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152773937] [2020-12-23 10:45:39,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:45:39,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:45:39,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528015112] [2020-12-23 10:45:39,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:45:39,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:39,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:45:39,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:45:39,197 INFO L87 Difference]: Start difference. First operand 477 states and 736 transitions. Second operand 6 states. [2020-12-23 10:45:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:39,457 INFO L93 Difference]: Finished difference Result 2033 states and 3172 transitions. [2020-12-23 10:45:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:45:39,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-23 10:45:39,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:39,468 INFO L225 Difference]: With dead ends: 2033 [2020-12-23 10:45:39,468 INFO L226 Difference]: Without dead ends: 1583 [2020-12-23 10:45:39,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:45:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-12-23 10:45:39,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1577. [2020-12-23 10:45:39,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-12-23 10:45:39,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2452 transitions. [2020-12-23 10:45:39,621 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2452 transitions. Word has length 52 [2020-12-23 10:45:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:39,622 INFO L481 AbstractCegarLoop]: Abstraction has 1577 states and 2452 transitions. [2020-12-23 10:45:39,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:45:39,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2452 transitions. [2020-12-23 10:45:39,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 10:45:39,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:39,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:39,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:45:39,625 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:39,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:39,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1744489678, now seen corresponding path program 1 times [2020-12-23 10:45:39,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:39,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220619040] [2020-12-23 10:45:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:39,688 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 10:45:39,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220619040] [2020-12-23 10:45:39,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:45:39,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:45:39,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651197496] [2020-12-23 10:45:39,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:45:39,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:39,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:45:39,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:45:39,691 INFO L87 Difference]: Start difference. First operand 1577 states and 2452 transitions. Second operand 3 states. [2020-12-23 10:45:39,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:39,876 INFO L93 Difference]: Finished difference Result 4141 states and 6438 transitions. [2020-12-23 10:45:39,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:45:39,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-23 10:45:39,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:39,893 INFO L225 Difference]: With dead ends: 4141 [2020-12-23 10:45:39,893 INFO L226 Difference]: Without dead ends: 2591 [2020-12-23 10:45:39,897 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 10:45:39,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2020-12-23 10:45:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2020-12-23 10:45:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2589 states. [2020-12-23 10:45:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3980 transitions. [2020-12-23 10:45:40,123 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3980 transitions. Word has length 53 [2020-12-23 10:45:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:40,123 INFO L481 AbstractCegarLoop]: Abstraction has 2589 states and 3980 transitions. [2020-12-23 10:45:40,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:45:40,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3980 transitions. [2020-12-23 10:45:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 10:45:40,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:40,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:40,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:45:40,130 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:40,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:40,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1689386392, now seen corresponding path program 1 times [2020-12-23 10:45:40,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:40,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004138965] [2020-12-23 10:45:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:40,293 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 10:45:40,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004138965] [2020-12-23 10:45:40,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:45:40,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:45:40,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051236661] [2020-12-23 10:45:40,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:45:40,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:40,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:45:40,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:45:40,296 INFO L87 Difference]: Start difference. First operand 2589 states and 3980 transitions. Second operand 6 states. [2020-12-23 10:45:41,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:41,032 INFO L93 Difference]: Finished difference Result 11799 states and 18193 transitions. [2020-12-23 10:45:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:45:41,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-12-23 10:45:41,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:41,083 INFO L225 Difference]: With dead ends: 11799 [2020-12-23 10:45:41,084 INFO L226 Difference]: Without dead ends: 9237 [2020-12-23 10:45:41,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:45:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9237 states. [2020-12-23 10:45:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9237 to 5149. [2020-12-23 10:45:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5149 states. [2020-12-23 10:45:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 7804 transitions. [2020-12-23 10:45:41,616 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 7804 transitions. Word has length 54 [2020-12-23 10:45:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:41,616 INFO L481 AbstractCegarLoop]: Abstraction has 5149 states and 7804 transitions. [2020-12-23 10:45:41,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:45:41,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 7804 transitions. [2020-12-23 10:45:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-23 10:45:41,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:41,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:41,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:45:41,619 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash -850826877, now seen corresponding path program 1 times [2020-12-23 10:45:41,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:41,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487967558] [2020-12-23 10:45:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:41,748 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 10:45:41,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487967558] [2020-12-23 10:45:41,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:45:41,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:45:41,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610938538] [2020-12-23 10:45:41,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:45:41,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:41,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:45:41,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:45:41,751 INFO L87 Difference]: Start difference. First operand 5149 states and 7804 transitions. Second operand 5 states. [2020-12-23 10:45:42,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:42,580 INFO L93 Difference]: Finished difference Result 10527 states and 15837 transitions. [2020-12-23 10:45:42,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:45:42,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-23 10:45:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:42,660 INFO L225 Difference]: With dead ends: 10527 [2020-12-23 10:45:42,660 INFO L226 Difference]: Without dead ends: 10525 [2020-12-23 10:45:42,668 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 10:45:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10525 states. [2020-12-23 10:45:43,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10525 to 5405. [2020-12-23 10:45:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2020-12-23 10:45:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 8060 transitions. [2020-12-23 10:45:43,234 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 8060 transitions. Word has length 55 [2020-12-23 10:45:43,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:43,236 INFO L481 AbstractCegarLoop]: Abstraction has 5405 states and 8060 transitions. [2020-12-23 10:45:43,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:45:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 8060 transitions. [2020-12-23 10:45:43,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 10:45:43,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:43,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:43,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:45:43,238 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:43,239 INFO L82 PathProgramCache]: Analyzing trace with hash -595256360, now seen corresponding path program 1 times [2020-12-23 10:45:43,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:43,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374688157] [2020-12-23 10:45:43,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:43,329 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 10:45:43,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374688157] [2020-12-23 10:45:43,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:45:43,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:45:43,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472124966] [2020-12-23 10:45:43,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:45:43,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:43,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:45:43,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:45:43,332 INFO L87 Difference]: Start difference. First operand 5405 states and 8060 transitions. Second operand 3 states. [2020-12-23 10:45:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:45:44,068 INFO L93 Difference]: Finished difference Result 13259 states and 19788 transitions. [2020-12-23 10:45:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:45:44,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-23 10:45:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:45:44,088 INFO L225 Difference]: With dead ends: 13259 [2020-12-23 10:45:44,088 INFO L226 Difference]: Without dead ends: 7881 [2020-12-23 10:45:44,098 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 10:45:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7881 states. [2020-12-23 10:45:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7881 to 7823. [2020-12-23 10:45:44,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7823 states. [2020-12-23 10:45:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 11586 transitions. [2020-12-23 10:45:44,784 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 11586 transitions. Word has length 56 [2020-12-23 10:45:44,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:45:44,784 INFO L481 AbstractCegarLoop]: Abstraction has 7823 states and 11586 transitions. [2020-12-23 10:45:44,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:45:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 11586 transitions. [2020-12-23 10:45:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:45:44,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:45:44,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:45:44,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:45:44,791 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:45:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:45:44,791 INFO L82 PathProgramCache]: Analyzing trace with hash -264442661, now seen corresponding path program 1 times [2020-12-23 10:45:44,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:45:44,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79498040] [2020-12-23 10:45:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:45:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:45:45,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79498040] [2020-12-23 10:45:45,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992653815] [2020-12-23 10:45:45,104 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 10:45:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:45:45,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 10:45:45,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:45:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:45:45,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:45:45,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 10:45:45,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893603883] [2020-12-23 10:45:45,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 10:45:45,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:45:45,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 10:45:45,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-23 10:45:45,653 INFO L87 Difference]: Start difference. First operand 7823 states and 11586 transitions. Second operand 12 states. [2020-12-23 10:45:51,017 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-12-23 10:46:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:46:02,598 INFO L93 Difference]: Finished difference Result 112903 states and 164848 transitions. [2020-12-23 10:46:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-12-23 10:46:02,599 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-12-23 10:46:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:46:02,923 INFO L225 Difference]: With dead ends: 112903 [2020-12-23 10:46:02,923 INFO L226 Difference]: Without dead ends: 105109 [2020-12-23 10:46:02,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3778 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1653, Invalid=7853, Unknown=0, NotChecked=0, Total=9506 [2020-12-23 10:46:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105109 states. [2020-12-23 10:46:07,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105109 to 28707. [2020-12-23 10:46:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28707 states. [2020-12-23 10:46:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28707 states to 28707 states and 41326 transitions. [2020-12-23 10:46:07,583 INFO L78 Accepts]: Start accepts. Automaton has 28707 states and 41326 transitions. Word has length 79 [2020-12-23 10:46:07,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:46:07,584 INFO L481 AbstractCegarLoop]: Abstraction has 28707 states and 41326 transitions. [2020-12-23 10:46:07,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 10:46:07,584 INFO L276 IsEmpty]: Start isEmpty. Operand 28707 states and 41326 transitions. [2020-12-23 10:46:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:46:07,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:46:07,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:46:07,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 10:46:07,807 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:46:07,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:46:07,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2142394861, now seen corresponding path program 1 times [2020-12-23 10:46:07,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:46:07,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364459735] [2020-12-23 10:46:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:46:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:46:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:46:07,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364459735] [2020-12-23 10:46:07,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:46:07,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:46:07,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208473084] [2020-12-23 10:46:07,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:46:07,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:46:07,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:46:07,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:46:07,881 INFO L87 Difference]: Start difference. First operand 28707 states and 41326 transitions. Second operand 3 states. [2020-12-23 10:46:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:46:11,857 INFO L93 Difference]: Finished difference Result 67304 states and 97202 transitions. [2020-12-23 10:46:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:46:11,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 10:46:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:46:12,022 INFO L225 Difference]: With dead ends: 67304 [2020-12-23 10:46:12,022 INFO L226 Difference]: Without dead ends: 44118 [2020-12-23 10:46:12,058 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 10:46:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44118 states. [2020-12-23 10:46:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44118 to 44116. [2020-12-23 10:46:16,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44116 states. [2020-12-23 10:46:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44116 states to 44116 states and 63104 transitions. [2020-12-23 10:46:16,508 INFO L78 Accepts]: Start accepts. Automaton has 44116 states and 63104 transitions. Word has length 79 [2020-12-23 10:46:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:46:16,509 INFO L481 AbstractCegarLoop]: Abstraction has 44116 states and 63104 transitions. [2020-12-23 10:46:16,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:46:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 44116 states and 63104 transitions. [2020-12-23 10:46:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:46:16,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:46:16,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:46:16,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:46:16,631 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:46:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:46:16,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1807198399, now seen corresponding path program 1 times [2020-12-23 10:46:16,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:46:16,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771123373] [2020-12-23 10:46:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:46:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:46:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:46:16,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771123373] [2020-12-23 10:46:16,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:46:16,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:46:16,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031839308] [2020-12-23 10:46:16,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:46:16,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:46:16,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:46:16,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:46:16,695 INFO L87 Difference]: Start difference. First operand 44116 states and 63104 transitions. Second operand 3 states. [2020-12-23 10:46:22,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:46:22,126 INFO L93 Difference]: Finished difference Result 90088 states and 128859 transitions. [2020-12-23 10:46:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:46:22,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 10:46:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:46:22,209 INFO L225 Difference]: With dead ends: 90088 [2020-12-23 10:46:22,210 INFO L226 Difference]: Without dead ends: 63382 [2020-12-23 10:46:22,256 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 10:46:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63382 states. [2020-12-23 10:46:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63382 to 58420. [2020-12-23 10:46:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58420 states. [2020-12-23 10:46:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58420 states to 58420 states and 82705 transitions. [2020-12-23 10:46:28,314 INFO L78 Accepts]: Start accepts. Automaton has 58420 states and 82705 transitions. Word has length 79 [2020-12-23 10:46:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:46:28,315 INFO L481 AbstractCegarLoop]: Abstraction has 58420 states and 82705 transitions. [2020-12-23 10:46:28,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:46:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 58420 states and 82705 transitions. [2020-12-23 10:46:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:46:28,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:46:28,331 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:46:28,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:46:28,331 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:46:28,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:46:28,332 INFO L82 PathProgramCache]: Analyzing trace with hash 611086120, now seen corresponding path program 1 times [2020-12-23 10:46:28,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:46:28,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434232056] [2020-12-23 10:46:28,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:46:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:46:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:46:28,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434232056] [2020-12-23 10:46:28,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:46:28,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:46:28,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562072801] [2020-12-23 10:46:28,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:46:28,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:46:28,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:46:28,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:46:28,387 INFO L87 Difference]: Start difference. First operand 58420 states and 82705 transitions. Second operand 3 states. [2020-12-23 10:46:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:46:34,843 INFO L93 Difference]: Finished difference Result 93972 states and 132386 transitions. [2020-12-23 10:46:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:46:34,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 10:46:34,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:46:34,914 INFO L225 Difference]: With dead ends: 93972 [2020-12-23 10:46:34,915 INFO L226 Difference]: Without dead ends: 61947 [2020-12-23 10:46:34,939 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 10:46:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61947 states. [2020-12-23 10:46:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61947 to 59144. [2020-12-23 10:46:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59144 states. [2020-12-23 10:46:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59144 states to 59144 states and 82228 transitions. [2020-12-23 10:46:40,930 INFO L78 Accepts]: Start accepts. Automaton has 59144 states and 82228 transitions. Word has length 79 [2020-12-23 10:46:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:46:40,930 INFO L481 AbstractCegarLoop]: Abstraction has 59144 states and 82228 transitions. [2020-12-23 10:46:40,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:46:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 59144 states and 82228 transitions. [2020-12-23 10:46:40,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:46:40,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:46:40,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:46:40,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:46:40,944 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:46:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:46:40,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1536259716, now seen corresponding path program 1 times [2020-12-23 10:46:40,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:46:40,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595203293] [2020-12-23 10:46:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:46:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:46:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 10:46:41,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595203293] [2020-12-23 10:46:41,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:46:41,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:46:41,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357055214] [2020-12-23 10:46:41,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:46:41,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:46:41,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:46:41,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:46:41,035 INFO L87 Difference]: Start difference. First operand 59144 states and 82228 transitions. Second operand 6 states. [2020-12-23 10:46:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:46:51,197 INFO L93 Difference]: Finished difference Result 128822 states and 181079 transitions. [2020-12-23 10:46:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:46:51,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-23 10:46:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:46:51,331 INFO L225 Difference]: With dead ends: 128822 [2020-12-23 10:46:51,332 INFO L226 Difference]: Without dead ends: 101015 [2020-12-23 10:46:51,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 10:46:51,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101015 states. [2020-12-23 10:46:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101015 to 79697. [2020-12-23 10:46:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79697 states. [2020-12-23 10:46:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79697 states to 79697 states and 110745 transitions. [2020-12-23 10:46:59,936 INFO L78 Accepts]: Start accepts. Automaton has 79697 states and 110745 transitions. Word has length 79 [2020-12-23 10:46:59,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:46:59,936 INFO L481 AbstractCegarLoop]: Abstraction has 79697 states and 110745 transitions. [2020-12-23 10:46:59,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:46:59,937 INFO L276 IsEmpty]: Start isEmpty. Operand 79697 states and 110745 transitions. [2020-12-23 10:46:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:46:59,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:46:59,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:46:59,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:46:59,947 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:46:59,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:46:59,947 INFO L82 PathProgramCache]: Analyzing trace with hash -259731985, now seen corresponding path program 1 times [2020-12-23 10:46:59,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:46:59,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83594565] [2020-12-23 10:46:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:46:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 10:47:00,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83594565] [2020-12-23 10:47:00,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:00,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:47:00,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337907050] [2020-12-23 10:47:00,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:47:00,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:00,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:47:00,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:47:00,018 INFO L87 Difference]: Start difference. First operand 79697 states and 110745 transitions. Second operand 5 states. [2020-12-23 10:47:13,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:13,659 INFO L93 Difference]: Finished difference Result 200082 states and 277196 transitions. [2020-12-23 10:47:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:47:13,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-12-23 10:47:13,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:13,901 INFO L225 Difference]: With dead ends: 200082 [2020-12-23 10:47:13,901 INFO L226 Difference]: Without dead ends: 120509 [2020-12-23 10:47:14,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:47:14,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120509 states. [2020-12-23 10:47:27,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120509 to 119976. [2020-12-23 10:47:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119976 states. [2020-12-23 10:47:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119976 states to 119976 states and 165118 transitions. [2020-12-23 10:47:27,689 INFO L78 Accepts]: Start accepts. Automaton has 119976 states and 165118 transitions. Word has length 79 [2020-12-23 10:47:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:47:27,690 INFO L481 AbstractCegarLoop]: Abstraction has 119976 states and 165118 transitions. [2020-12-23 10:47:27,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:47:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 119976 states and 165118 transitions. [2020-12-23 10:47:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:47:27,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:47:27,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:47:27,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:47:27,704 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:47:27,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:47:27,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1327277398, now seen corresponding path program 1 times [2020-12-23 10:47:27,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:47:27,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794971165] [2020-12-23 10:47:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:47:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:47:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 10:47:28,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794971165] [2020-12-23 10:47:28,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:47:28,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:47:28,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737910645] [2020-12-23 10:47:28,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:47:28,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:47:28,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:47:28,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:47:28,060 INFO L87 Difference]: Start difference. First operand 119976 states and 165118 transitions. Second operand 6 states. [2020-12-23 10:47:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:47:47,915 INFO L93 Difference]: Finished difference Result 207040 states and 287957 transitions. [2020-12-23 10:47:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:47:47,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-23 10:47:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:47:48,237 INFO L225 Difference]: With dead ends: 207040 [2020-12-23 10:47:48,237 INFO L226 Difference]: Without dead ends: 180875 [2020-12-23 10:47:48,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:47:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180875 states. [2020-12-23 10:48:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180875 to 145392. [2020-12-23 10:48:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145392 states. [2020-12-23 10:48:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145392 states to 145392 states and 200384 transitions. [2020-12-23 10:48:05,654 INFO L78 Accepts]: Start accepts. Automaton has 145392 states and 200384 transitions. Word has length 79 [2020-12-23 10:48:05,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:48:05,655 INFO L481 AbstractCegarLoop]: Abstraction has 145392 states and 200384 transitions. [2020-12-23 10:48:05,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:48:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 145392 states and 200384 transitions. [2020-12-23 10:48:05,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:48:05,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:48:05,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:48:05,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:48:05,673 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:48:05,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:48:05,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1216138536, now seen corresponding path program 1 times [2020-12-23 10:48:05,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:48:05,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263186231] [2020-12-23 10:48:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:48:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:48:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 10:48:05,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263186231] [2020-12-23 10:48:05,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:48:05,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:48:05,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483735877] [2020-12-23 10:48:05,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:48:05,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:48:05,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:48:05,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:48:05,771 INFO L87 Difference]: Start difference. First operand 145392 states and 200384 transitions. Second operand 6 states.