/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.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:56:59,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:56:59,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:56:59,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:56:59,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:56:59,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:56:59,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:56:59,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:56:59,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:56:59,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:56:59,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:56:59,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:56:59,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:56:59,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:56:59,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:56:59,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:56:59,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:56:59,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:56:59,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:56:59,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:56:59,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:56:59,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:56:59,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:56:59,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:56:59,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:56:59,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:56:59,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:56:59,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:56:59,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:56:59,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:56:59,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:56:59,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:56:59,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:56:59,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:56:59,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:56:59,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:56:59,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:56:59,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:56:59,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:56:59,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:56:59,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:56:59,217 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 10:56:59,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:56:59,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:56:59,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:56:59,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:56:59,253 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:56:59,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:56:59,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:56:59,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:56:59,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:56:59,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:56:59,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:56:59,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:56:59,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:56:59,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:56:59,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:56:59,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:56:59,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:56:59,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:56:59,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:56:59,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:56:59,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:56:59,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:56:59,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:56:59,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:56:59,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:56:59,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:56:59,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:56:59,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:56:59,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:56:59,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:56:59,749 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:56:59,750 INFO L432 ainManager$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.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-23 10:56:59,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ae50d0326/64054ddca3fb41eab3681e0714249b0c/FLAG592193749 [2020-12-23 10:57:00,452 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:57:00,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-23 10:57:00,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ae50d0326/64054ddca3fb41eab3681e0714249b0c/FLAG592193749 [2020-12-23 10:57:00,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ae50d0326/64054ddca3fb41eab3681e0714249b0c [2020-12-23 10:57:00,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:57:00,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:57:00,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:57:00,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:57:00,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:57:00,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:57:00" (1/1) ... [2020-12-23 10:57:00,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24afa2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:00, skipping insertion in model container [2020-12-23 10:57:00,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:57:00" (1/1) ... [2020-12-23 10:57:00,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:57:00,890 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[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_104960~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_105146~0,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 10:57:01,185 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.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6961,6974] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_105264~0,GLOBAL] [2020-12-23 10:57:01,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:57:01,262 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[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_104960~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_105146~0,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 10:57:01,365 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.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6961,6974] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_105264~0,GLOBAL] [2020-12-23 10:57:01,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:57:01,430 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:57:01,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01 WrapperNode [2020-12-23 10:57:01,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:57:01,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:57:01,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:57:01,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:57:01,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (1/1) ... [2020-12-23 10:57:01,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (1/1) ... [2020-12-23 10:57:01,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:57:01,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:57:01,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:57:01,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:57:01,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (1/1) ... [2020-12-23 10:57:01,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (1/1) ... [2020-12-23 10:57:01,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (1/1) ... [2020-12-23 10:57:01,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (1/1) ... [2020-12-23 10:57:01,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (1/1) ... [2020-12-23 10:57:01,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (1/1) ... [2020-12-23 10:57:01,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (1/1) ... [2020-12-23 10:57:01,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:57:01,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:57:01,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:57:01,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:57:01,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (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 10:57:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:57:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:57:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:57:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:57:02,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:57:02,888 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:57:02,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:57:02 BoogieIcfgContainer [2020-12-23 10:57:02,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:57:02,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:57:02,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:57:02,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:57:02,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:57:00" (1/3) ... [2020-12-23 10:57:02,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f2825a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:57:02, skipping insertion in model container [2020-12-23 10:57:02,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:01" (2/3) ... [2020-12-23 10:57:02,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f2825a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:57:02, skipping insertion in model container [2020-12-23 10:57:02,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:57:02" (3/3) ... [2020-12-23 10:57:02,900 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-23 10:57:02,907 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:57:02,913 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:57:02,933 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:57:02,965 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:57:02,965 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:57:02,965 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:57:02,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:57:02,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:57:02,965 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:57:02,966 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:57:02,966 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:57:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-12-23 10:57:02,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:57:02,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:03,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:03,000 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:03,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:03,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1878373097, now seen corresponding path program 1 times [2020-12-23 10:57:03,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:03,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149189544] [2020-12-23 10:57:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:03,439 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 10:57:03,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149189544] [2020-12-23 10:57:03,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:03,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:03,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110818419] [2020-12-23 10:57:03,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:03,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:03,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:03,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:03,469 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2020-12-23 10:57:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:03,566 INFO L93 Difference]: Finished difference Result 370 states and 603 transitions. [2020-12-23 10:57:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:03,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 10:57:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:03,598 INFO L225 Difference]: With dead ends: 370 [2020-12-23 10:57:03,598 INFO L226 Difference]: Without dead ends: 250 [2020-12-23 10:57:03,605 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 10:57:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-23 10:57:03,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-12-23 10:57:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-23 10:57:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 370 transitions. [2020-12-23 10:57:03,673 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 370 transitions. Word has length 73 [2020-12-23 10:57:03,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:03,673 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 370 transitions. [2020-12-23 10:57:03,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 370 transitions. [2020-12-23 10:57:03,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 10:57:03,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:03,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:03,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:57:03,678 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:03,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:03,679 INFO L82 PathProgramCache]: Analyzing trace with hash 32941141, now seen corresponding path program 1 times [2020-12-23 10:57:03,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:03,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094477598] [2020-12-23 10:57:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:03,935 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 10:57:03,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094477598] [2020-12-23 10:57:03,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:03,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:03,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268269173] [2020-12-23 10:57:03,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:03,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:03,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:03,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:03,943 INFO L87 Difference]: Start difference. First operand 248 states and 370 transitions. Second operand 3 states. [2020-12-23 10:57:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:04,041 INFO L93 Difference]: Finished difference Result 624 states and 970 transitions. [2020-12-23 10:57:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:04,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 10:57:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:04,055 INFO L225 Difference]: With dead ends: 624 [2020-12-23 10:57:04,057 INFO L226 Difference]: Without dead ends: 420 [2020-12-23 10:57:04,061 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 10:57:04,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-12-23 10:57:04,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 418. [2020-12-23 10:57:04,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-23 10:57:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 641 transitions. [2020-12-23 10:57:04,181 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 641 transitions. Word has length 74 [2020-12-23 10:57:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:04,183 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 641 transitions. [2020-12-23 10:57:04,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 641 transitions. [2020-12-23 10:57:04,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 10:57:04,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:04,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:04,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:57:04,191 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:04,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:04,192 INFO L82 PathProgramCache]: Analyzing trace with hash 2013184178, now seen corresponding path program 1 times [2020-12-23 10:57:04,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:04,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123716813] [2020-12-23 10:57:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:04,369 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 10:57:04,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123716813] [2020-12-23 10:57:04,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:04,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:04,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167319198] [2020-12-23 10:57:04,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:04,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:04,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:04,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:04,378 INFO L87 Difference]: Start difference. First operand 418 states and 641 transitions. Second operand 3 states. [2020-12-23 10:57:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:04,483 INFO L93 Difference]: Finished difference Result 1102 states and 1731 transitions. [2020-12-23 10:57:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:04,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 10:57:04,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:04,489 INFO L225 Difference]: With dead ends: 1102 [2020-12-23 10:57:04,490 INFO L226 Difference]: Without dead ends: 728 [2020-12-23 10:57:04,492 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 10:57:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-12-23 10:57:04,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 726. [2020-12-23 10:57:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2020-12-23 10:57:04,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1129 transitions. [2020-12-23 10:57:04,594 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1129 transitions. Word has length 75 [2020-12-23 10:57:04,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:04,595 INFO L481 AbstractCegarLoop]: Abstraction has 726 states and 1129 transitions. [2020-12-23 10:57:04,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1129 transitions. [2020-12-23 10:57:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 10:57:04,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:04,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:04,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:57:04,609 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:04,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:04,609 INFO L82 PathProgramCache]: Analyzing trace with hash -360572760, now seen corresponding path program 1 times [2020-12-23 10:57:04,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:04,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793197376] [2020-12-23 10:57:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:04,728 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 10:57:04,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793197376] [2020-12-23 10:57:04,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:04,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:04,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051784115] [2020-12-23 10:57:04,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:04,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:04,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:04,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:04,731 INFO L87 Difference]: Start difference. First operand 726 states and 1129 transitions. Second operand 3 states. [2020-12-23 10:57:04,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:04,816 INFO L93 Difference]: Finished difference Result 1962 states and 3091 transitions. [2020-12-23 10:57:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:04,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 10:57:04,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:04,825 INFO L225 Difference]: With dead ends: 1962 [2020-12-23 10:57:04,825 INFO L226 Difference]: Without dead ends: 1280 [2020-12-23 10:57:04,828 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 10:57:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2020-12-23 10:57:04,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1278. [2020-12-23 10:57:04,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-12-23 10:57:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1997 transitions. [2020-12-23 10:57:04,937 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1997 transitions. Word has length 76 [2020-12-23 10:57:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:04,937 INFO L481 AbstractCegarLoop]: Abstraction has 1278 states and 1997 transitions. [2020-12-23 10:57:04,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1997 transitions. [2020-12-23 10:57:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 10:57:04,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:04,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:04,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:57:04,940 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:04,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:04,941 INFO L82 PathProgramCache]: Analyzing trace with hash 25557647, now seen corresponding path program 1 times [2020-12-23 10:57:04,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:04,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396298892] [2020-12-23 10:57:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:05,045 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 10:57:05,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396298892] [2020-12-23 10:57:05,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:05,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:05,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971749548] [2020-12-23 10:57:05,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:05,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:05,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:05,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:05,051 INFO L87 Difference]: Start difference. First operand 1278 states and 1997 transitions. Second operand 3 states. [2020-12-23 10:57:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:05,195 INFO L93 Difference]: Finished difference Result 3490 states and 5487 transitions. [2020-12-23 10:57:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:05,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 10:57:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:05,208 INFO L225 Difference]: With dead ends: 3490 [2020-12-23 10:57:05,209 INFO L226 Difference]: Without dead ends: 2256 [2020-12-23 10:57:05,211 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 10:57:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2020-12-23 10:57:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2254. [2020-12-23 10:57:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2254 states. [2020-12-23 10:57:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3517 transitions. [2020-12-23 10:57:05,347 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3517 transitions. Word has length 77 [2020-12-23 10:57:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:05,348 INFO L481 AbstractCegarLoop]: Abstraction has 2254 states and 3517 transitions. [2020-12-23 10:57:05,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3517 transitions. [2020-12-23 10:57:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:57:05,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:05,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:05,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:57:05,351 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:05,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:05,352 INFO L82 PathProgramCache]: Analyzing trace with hash 551922959, now seen corresponding path program 1 times [2020-12-23 10:57:05,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:05,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505604085] [2020-12-23 10:57:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:05,784 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 10:57:05,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505604085] [2020-12-23 10:57:05,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:05,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 10:57:05,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312001928] [2020-12-23 10:57:05,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 10:57:05,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:05,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 10:57:05,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:57:05,792 INFO L87 Difference]: Start difference. First operand 2254 states and 3517 transitions. Second operand 8 states. [2020-12-23 10:57:06,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:06,913 INFO L93 Difference]: Finished difference Result 13674 states and 21315 transitions. [2020-12-23 10:57:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 10:57:06,914 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-23 10:57:06,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:06,975 INFO L225 Difference]: With dead ends: 13674 [2020-12-23 10:57:06,975 INFO L226 Difference]: Without dead ends: 11464 [2020-12-23 10:57:06,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:57:06,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2020-12-23 10:57:07,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11454. [2020-12-23 10:57:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11454 states. [2020-12-23 10:57:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11454 states to 11454 states and 17805 transitions. [2020-12-23 10:57:07,934 INFO L78 Accepts]: Start accepts. Automaton has 11454 states and 17805 transitions. Word has length 78 [2020-12-23 10:57:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:07,934 INFO L481 AbstractCegarLoop]: Abstraction has 11454 states and 17805 transitions. [2020-12-23 10:57:07,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 10:57:07,934 INFO L276 IsEmpty]: Start isEmpty. Operand 11454 states and 17805 transitions. [2020-12-23 10:57:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:57:07,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:07,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:07,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:57:07,938 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:07,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:07,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1269976494, now seen corresponding path program 1 times [2020-12-23 10:57:07,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:07,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533994817] [2020-12-23 10:57:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:08,045 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 10:57:08,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533994817] [2020-12-23 10:57:08,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:08,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:08,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468838974] [2020-12-23 10:57:08,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:08,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:08,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:08,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:08,052 INFO L87 Difference]: Start difference. First operand 11454 states and 17805 transitions. Second operand 3 states. [2020-12-23 10:57:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:09,412 INFO L93 Difference]: Finished difference Result 32162 states and 49871 transitions. [2020-12-23 10:57:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:09,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-23 10:57:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:09,495 INFO L225 Difference]: With dead ends: 32162 [2020-12-23 10:57:09,495 INFO L226 Difference]: Without dead ends: 20752 [2020-12-23 10:57:09,515 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 10:57:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20752 states. [2020-12-23 10:57:11,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20752 to 20750. [2020-12-23 10:57:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20750 states. [2020-12-23 10:57:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20750 states to 20750 states and 31917 transitions. [2020-12-23 10:57:11,199 INFO L78 Accepts]: Start accepts. Automaton has 20750 states and 31917 transitions. Word has length 78 [2020-12-23 10:57:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:11,199 INFO L481 AbstractCegarLoop]: Abstraction has 20750 states and 31917 transitions. [2020-12-23 10:57:11,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 20750 states and 31917 transitions. [2020-12-23 10:57:11,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 10:57:11,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:11,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:11,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:57:11,202 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:11,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:11,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1961103994, now seen corresponding path program 1 times [2020-12-23 10:57:11,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:11,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129314997] [2020-12-23 10:57:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:11,339 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 10:57:11,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129314997] [2020-12-23 10:57:11,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:11,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:57:11,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249368527] [2020-12-23 10:57:11,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:57:11,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:11,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:57:11,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:57:11,343 INFO L87 Difference]: Start difference. First operand 20750 states and 31917 transitions. Second operand 6 states. [2020-12-23 10:57:14,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:14,931 INFO L93 Difference]: Finished difference Result 81748 states and 125616 transitions. [2020-12-23 10:57:14,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:57:14,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-23 10:57:14,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:15,129 INFO L225 Difference]: With dead ends: 81748 [2020-12-23 10:57:15,129 INFO L226 Difference]: Without dead ends: 61042 [2020-12-23 10:57:15,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:57:15,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61042 states. [2020-12-23 10:57:18,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61042 to 61038. [2020-12-23 10:57:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61038 states. [2020-12-23 10:57:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61038 states to 61038 states and 93421 transitions. [2020-12-23 10:57:18,874 INFO L78 Accepts]: Start accepts. Automaton has 61038 states and 93421 transitions. Word has length 80 [2020-12-23 10:57:18,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:18,875 INFO L481 AbstractCegarLoop]: Abstraction has 61038 states and 93421 transitions. [2020-12-23 10:57:18,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:57:18,875 INFO L276 IsEmpty]: Start isEmpty. Operand 61038 states and 93421 transitions. [2020-12-23 10:57:18,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 10:57:18,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:18,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:18,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:57:18,876 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:18,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:18,877 INFO L82 PathProgramCache]: Analyzing trace with hash -343599103, now seen corresponding path program 1 times [2020-12-23 10:57:18,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:18,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369915247] [2020-12-23 10:57:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:19,027 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 10:57:19,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369915247] [2020-12-23 10:57:19,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:19,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 10:57:19,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488348733] [2020-12-23 10:57:19,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 10:57:19,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:19,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 10:57:19,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:57:19,031 INFO L87 Difference]: Start difference. First operand 61038 states and 93421 transitions. Second operand 8 states. [2020-12-23 10:57:32,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:32,202 INFO L93 Difference]: Finished difference Result 343996 states and 527188 transitions. [2020-12-23 10:57:32,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 10:57:32,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-23 10:57:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:33,061 INFO L225 Difference]: With dead ends: 343996 [2020-12-23 10:57:33,062 INFO L226 Difference]: Without dead ends: 283002 [2020-12-23 10:57:33,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-23 10:57:33,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283002 states. [2020-12-23 10:57:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283002 to 122030. [2020-12-23 10:57:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122030 states. [2020-12-23 10:57:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122030 states to 122030 states and 184493 transitions. [2020-12-23 10:57:43,071 INFO L78 Accepts]: Start accepts. Automaton has 122030 states and 184493 transitions. Word has length 80 [2020-12-23 10:57:43,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:43,072 INFO L481 AbstractCegarLoop]: Abstraction has 122030 states and 184493 transitions. [2020-12-23 10:57:43,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 10:57:43,072 INFO L276 IsEmpty]: Start isEmpty. Operand 122030 states and 184493 transitions. [2020-12-23 10:57:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 10:57:43,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:43,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:43,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:57:43,074 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:43,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:43,074 INFO L82 PathProgramCache]: Analyzing trace with hash -2081093798, now seen corresponding path program 1 times [2020-12-23 10:57:43,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:43,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782421776] [2020-12-23 10:57:43,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:43,429 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 10:57:43,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782421776] [2020-12-23 10:57:43,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:43,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:57:43,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946743075] [2020-12-23 10:57:43,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:57:43,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:43,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:57:43,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:57:43,437 INFO L87 Difference]: Start difference. First operand 122030 states and 184493 transitions. Second operand 5 states. [2020-12-23 10:57:57,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:57,540 INFO L93 Difference]: Finished difference Result 248624 states and 373550 transitions. [2020-12-23 10:57:57,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:57:57,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-23 10:57:57,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:58,106 INFO L225 Difference]: With dead ends: 248624 [2020-12-23 10:57:58,106 INFO L226 Difference]: Without dead ends: 248622 [2020-12-23 10:57:58,161 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 10:57:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248622 states. [2020-12-23 10:58:08,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248622 to 126638. [2020-12-23 10:58:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126638 states. [2020-12-23 10:58:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126638 states to 126638 states and 189101 transitions. [2020-12-23 10:58:08,531 INFO L78 Accepts]: Start accepts. Automaton has 126638 states and 189101 transitions. Word has length 81 [2020-12-23 10:58:08,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:58:08,532 INFO L481 AbstractCegarLoop]: Abstraction has 126638 states and 189101 transitions. [2020-12-23 10:58:08,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:58:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 126638 states and 189101 transitions. [2020-12-23 10:58:08,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 10:58:08,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:58:08,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:58:08,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:58:08,534 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:58:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:58:08,534 INFO L82 PathProgramCache]: Analyzing trace with hash -78825167, now seen corresponding path program 1 times [2020-12-23 10:58:08,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:58:08,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014996047] [2020-12-23 10:58:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:58:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:58:08,600 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 10:58:08,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014996047] [2020-12-23 10:58:08,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:58:08,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:58:08,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466408427] [2020-12-23 10:58:08,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:58:08,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:58:08,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:58:08,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:58:08,603 INFO L87 Difference]: Start difference. First operand 126638 states and 189101 transitions. Second operand 3 states. [2020-12-23 10:58:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:58:20,792 INFO L93 Difference]: Finished difference Result 310084 states and 462801 transitions. [2020-12-23 10:58:20,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:58:20,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-23 10:58:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:58:21,264 INFO L225 Difference]: With dead ends: 310084 [2020-12-23 10:58:21,264 INFO L226 Difference]: Without dead ends: 183490 [2020-12-23 10:58:21,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:58:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183490 states. [2020-12-23 10:58:34,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183490 to 183488. [2020-12-23 10:58:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183488 states. [2020-12-23 10:58:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183488 states to 183488 states and 272687 transitions. [2020-12-23 10:58:35,253 INFO L78 Accepts]: Start accepts. Automaton has 183488 states and 272687 transitions. Word has length 82 [2020-12-23 10:58:35,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:58:35,253 INFO L481 AbstractCegarLoop]: Abstraction has 183488 states and 272687 transitions. [2020-12-23 10:58:35,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:58:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 183488 states and 272687 transitions. [2020-12-23 10:58:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 10:58:35,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:58:35,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:35,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:58:35,314 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:58:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:58:35,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1944041502, now seen corresponding path program 1 times [2020-12-23 10:58:35,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:58:35,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614951887] [2020-12-23 10:58:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:58:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:58:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:58:35,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614951887] [2020-12-23 10:58:35,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622600144] [2020-12-23 10:58:35,735 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 10:58:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:58:36,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 10:58:36,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:58:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:58:36,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:58:36,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2020-12-23 10:58:36,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703399196] [2020-12-23 10:58:36,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 10:58:36,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:58:36,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 10:58:36,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-12-23 10:58:36,410 INFO L87 Difference]: Start difference. First operand 183488 states and 272687 transitions. Second operand 13 states. [2020-12-23 10:58:54,713 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32