/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.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 20:45:11,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 20:45:11,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 20:45:11,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 20:45:11,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 20:45:11,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 20:45:11,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 20:45:11,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 20:45:11,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 20:45:11,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 20:45:11,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 20:45:11,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 20:45:11,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 20:45:11,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 20:45:11,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 20:45:11,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 20:45:11,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 20:45:11,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 20:45:11,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 20:45:11,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 20:45:11,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 20:45:11,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 20:45:11,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 20:45:11,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 20:45:11,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 20:45:11,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 20:45:11,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 20:45:11,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 20:45:11,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 20:45:11,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 20:45:11,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 20:45:11,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 20:45:11,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 20:45:11,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 20:45:11,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 20:45:11,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 20:45:11,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 20:45:11,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 20:45:11,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 20:45:11,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 20:45:11,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 20:45:11,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 20:45:11,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 20:45:11,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 20:45:11,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 20:45:11,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 20:45:11,358 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 20:45:11,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 20:45:11,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 20:45:11,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 20:45:11,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 20:45:11,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 20:45:11,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 20:45:11,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 20:45:11,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 20:45:11,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 20:45:11,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 20:45:11,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 20:45:11,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 20:45:11,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:45:11,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 20:45:11,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 20:45:11,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 20:45:11,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 20:45:11,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 20:45:11,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 20:45:11,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 20:45:11,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 20:45:11,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 20:45:11,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 20:45:11,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 20:45:11,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 20:45:11,846 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 20:45:11,847 INFO L432 ainManager$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.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-01-06 20:45:11,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a30a15436/47e06d99603549f9840b158155b599b4/FLAG2f09f6674 [2021-01-06 20:45:12,542 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 20:45:12,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-01-06 20:45:12,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a30a15436/47e06d99603549f9840b158155b599b4/FLAG2f09f6674 [2021-01-06 20:45:12,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a30a15436/47e06d99603549f9840b158155b599b4 [2021-01-06 20:45:12,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 20:45:12,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 20:45:12,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 20:45:12,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 20:45:12,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 20:45:12,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:45:12" (1/1) ... [2021-01-06 20:45:12,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad40615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:12, skipping insertion in model container [2021-01-06 20:45:12,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:45:12" (1/1) ... [2021-01-06 20:45:12,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 20:45:12,987 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[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_33017~0,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[~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[~p5_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[~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[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_33173~0,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,] [2021-01-06 20:45:13,310 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.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5918,5931] 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[~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_33275~0,GLOBAL] [2021-01-06 20:45:13,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:45:13,431 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[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_33017~0,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[~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[~p5_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[~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[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_33173~0,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,] [2021-01-06 20:45:13,531 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.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5918,5931] 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[~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_33275~0,GLOBAL] [2021-01-06 20:45:13,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:45:13,580 INFO L208 MainTranslator]: Completed translation [2021-01-06 20:45:13,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13 WrapperNode [2021-01-06 20:45:13,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 20:45:13,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 20:45:13,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 20:45:13,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 20:45:13,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (1/1) ... [2021-01-06 20:45:13,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (1/1) ... [2021-01-06 20:45:13,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 20:45:13,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 20:45:13,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 20:45:13,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 20:45:13,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (1/1) ... [2021-01-06 20:45:13,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (1/1) ... [2021-01-06 20:45:13,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (1/1) ... [2021-01-06 20:45:13,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (1/1) ... [2021-01-06 20:45:13,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (1/1) ... [2021-01-06 20:45:13,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (1/1) ... [2021-01-06 20:45:13,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (1/1) ... [2021-01-06 20:45:13,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 20:45:13,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 20:45:13,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 20:45:13,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 20:45:13,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:45:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 20:45:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 20:45:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 20:45:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 20:45:14,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 20:45:14,667 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 20:45:14,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:45:14 BoogieIcfgContainer [2021-01-06 20:45:14,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 20:45:14,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 20:45:14,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 20:45:14,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 20:45:14,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 08:45:12" (1/3) ... [2021-01-06 20:45:14,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630fabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:45:14, skipping insertion in model container [2021-01-06 20:45:14,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:45:13" (2/3) ... [2021-01-06 20:45:14,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630fabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:45:14, skipping insertion in model container [2021-01-06 20:45:14,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:45:14" (3/3) ... [2021-01-06 20:45:14,679 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-01-06 20:45:14,686 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 20:45:14,692 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 20:45:14,712 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 20:45:14,740 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 20:45:14,741 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 20:45:14,741 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 20:45:14,741 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 20:45:14,741 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 20:45:14,742 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 20:45:14,742 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 20:45:14,742 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 20:45:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2021-01-06 20:45:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-06 20:45:14,772 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:14,773 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] [2021-01-06 20:45:14,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:14,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:14,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1065941507, now seen corresponding path program 1 times [2021-01-06 20:45:14,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:14,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554683470] [2021-01-06 20:45:14,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:15,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554683470] [2021-01-06 20:45:15,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:45:15,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:45:15,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110255838] [2021-01-06 20:45:15,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:45:15,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:15,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:45:15,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:15,212 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 3 states. [2021-01-06 20:45:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:45:15,316 INFO L93 Difference]: Finished difference Result 307 states and 498 transitions. [2021-01-06 20:45:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:45:15,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2021-01-06 20:45:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:45:15,340 INFO L225 Difference]: With dead ends: 307 [2021-01-06 20:45:15,340 INFO L226 Difference]: Without dead ends: 205 [2021-01-06 20:45:15,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:15,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-01-06 20:45:15,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2021-01-06 20:45:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2021-01-06 20:45:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 303 transitions. [2021-01-06 20:45:15,436 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 303 transitions. Word has length 60 [2021-01-06 20:45:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:45:15,437 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 303 transitions. [2021-01-06 20:45:15,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:45:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 303 transitions. [2021-01-06 20:45:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:45:15,440 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:15,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:45:15,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 20:45:15,441 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:15,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1987406881, now seen corresponding path program 1 times [2021-01-06 20:45:15,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:15,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223808241] [2021-01-06 20:45:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:15,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223808241] [2021-01-06 20:45:15,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:45:15,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:45:15,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351550305] [2021-01-06 20:45:15,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:45:15,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:15,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:45:15,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:15,638 INFO L87 Difference]: Start difference. First operand 203 states and 303 transitions. Second operand 3 states. [2021-01-06 20:45:15,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:45:15,695 INFO L93 Difference]: Finished difference Result 507 states and 787 transitions. [2021-01-06 20:45:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:45:15,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2021-01-06 20:45:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:45:15,699 INFO L225 Difference]: With dead ends: 507 [2021-01-06 20:45:15,699 INFO L226 Difference]: Without dead ends: 339 [2021-01-06 20:45:15,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-01-06 20:45:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2021-01-06 20:45:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-01-06 20:45:15,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 516 transitions. [2021-01-06 20:45:15,748 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 516 transitions. Word has length 61 [2021-01-06 20:45:15,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:45:15,749 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 516 transitions. [2021-01-06 20:45:15,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:45:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 516 transitions. [2021-01-06 20:45:15,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 20:45:15,752 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:15,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:45:15,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 20:45:15,752 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:15,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:15,753 INFO L82 PathProgramCache]: Analyzing trace with hash 175155952, now seen corresponding path program 1 times [2021-01-06 20:45:15,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:15,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135246892] [2021-01-06 20:45:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:15,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135246892] [2021-01-06 20:45:15,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:45:15,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:45:15,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839863545] [2021-01-06 20:45:15,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:45:15,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:15,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:45:15,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:15,954 INFO L87 Difference]: Start difference. First operand 337 states and 516 transitions. Second operand 3 states. [2021-01-06 20:45:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:45:16,065 INFO L93 Difference]: Finished difference Result 877 states and 1374 transitions. [2021-01-06 20:45:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:45:16,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2021-01-06 20:45:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:45:16,077 INFO L225 Difference]: With dead ends: 877 [2021-01-06 20:45:16,077 INFO L226 Difference]: Without dead ends: 575 [2021-01-06 20:45:16,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-01-06 20:45:16,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2021-01-06 20:45:16,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2021-01-06 20:45:16,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 888 transitions. [2021-01-06 20:45:16,160 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 888 transitions. Word has length 62 [2021-01-06 20:45:16,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:45:16,161 INFO L481 AbstractCegarLoop]: Abstraction has 573 states and 888 transitions. [2021-01-06 20:45:16,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:45:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 888 transitions. [2021-01-06 20:45:16,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:45:16,163 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:16,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:45:16,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 20:45:16,164 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:16,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:16,165 INFO L82 PathProgramCache]: Analyzing trace with hash -546721508, now seen corresponding path program 1 times [2021-01-06 20:45:16,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:16,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105185960] [2021-01-06 20:45:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:16,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105185960] [2021-01-06 20:45:16,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:45:16,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:45:16,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272907273] [2021-01-06 20:45:16,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:45:16,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:16,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:45:16,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:16,248 INFO L87 Difference]: Start difference. First operand 573 states and 888 transitions. Second operand 3 states. [2021-01-06 20:45:16,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:45:16,309 INFO L93 Difference]: Finished difference Result 1521 states and 2386 transitions. [2021-01-06 20:45:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:45:16,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2021-01-06 20:45:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:45:16,316 INFO L225 Difference]: With dead ends: 1521 [2021-01-06 20:45:16,317 INFO L226 Difference]: Without dead ends: 983 [2021-01-06 20:45:16,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2021-01-06 20:45:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2021-01-06 20:45:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2021-01-06 20:45:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1524 transitions. [2021-01-06 20:45:16,378 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1524 transitions. Word has length 63 [2021-01-06 20:45:16,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:45:16,379 INFO L481 AbstractCegarLoop]: Abstraction has 981 states and 1524 transitions. [2021-01-06 20:45:16,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:45:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1524 transitions. [2021-01-06 20:45:16,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:45:16,382 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:16,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:45:16,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 20:45:16,382 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash -8861705, now seen corresponding path program 1 times [2021-01-06 20:45:16,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:16,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996517939] [2021-01-06 20:45:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:16,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996517939] [2021-01-06 20:45:16,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:45:16,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 20:45:16,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142839470] [2021-01-06 20:45:16,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 20:45:16,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:16,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 20:45:16,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:45:16,665 INFO L87 Difference]: Start difference. First operand 981 states and 1524 transitions. Second operand 7 states. [2021-01-06 20:45:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:45:17,129 INFO L93 Difference]: Finished difference Result 5071 states and 7913 transitions. [2021-01-06 20:45:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 20:45:17,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2021-01-06 20:45:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:45:17,152 INFO L225 Difference]: With dead ends: 5071 [2021-01-06 20:45:17,152 INFO L226 Difference]: Without dead ends: 4125 [2021-01-06 20:45:17,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:45:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4125 states. [2021-01-06 20:45:17,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4125 to 4117. [2021-01-06 20:45:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4117 states. [2021-01-06 20:45:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4117 states to 4117 states and 6404 transitions. [2021-01-06 20:45:17,495 INFO L78 Accepts]: Start accepts. Automaton has 4117 states and 6404 transitions. Word has length 64 [2021-01-06 20:45:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:45:17,497 INFO L481 AbstractCegarLoop]: Abstraction has 4117 states and 6404 transitions. [2021-01-06 20:45:17,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 20:45:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4117 states and 6404 transitions. [2021-01-06 20:45:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:45:17,501 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:17,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:45:17,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 20:45:17,501 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:17,503 INFO L82 PathProgramCache]: Analyzing trace with hash -795974674, now seen corresponding path program 1 times [2021-01-06 20:45:17,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:17,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287082182] [2021-01-06 20:45:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:17,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287082182] [2021-01-06 20:45:17,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:45:17,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:45:17,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490490836] [2021-01-06 20:45:17,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:45:17,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:17,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:45:17,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:17,614 INFO L87 Difference]: Start difference. First operand 4117 states and 6404 transitions. Second operand 3 states. [2021-01-06 20:45:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:45:18,111 INFO L93 Difference]: Finished difference Result 11401 states and 17702 transitions. [2021-01-06 20:45:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:45:18,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2021-01-06 20:45:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:45:18,191 INFO L225 Difference]: With dead ends: 11401 [2021-01-06 20:45:18,192 INFO L226 Difference]: Without dead ends: 7319 [2021-01-06 20:45:18,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7319 states. [2021-01-06 20:45:18,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7319 to 7317. [2021-01-06 20:45:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7317 states. [2021-01-06 20:45:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7317 states to 7317 states and 11252 transitions. [2021-01-06 20:45:18,781 INFO L78 Accepts]: Start accepts. Automaton has 7317 states and 11252 transitions. Word has length 64 [2021-01-06 20:45:18,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:45:18,783 INFO L481 AbstractCegarLoop]: Abstraction has 7317 states and 11252 transitions. [2021-01-06 20:45:18,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:45:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 7317 states and 11252 transitions. [2021-01-06 20:45:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 20:45:18,786 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:18,786 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] [2021-01-06 20:45:18,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 20:45:18,787 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:18,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:18,791 INFO L82 PathProgramCache]: Analyzing trace with hash -722393440, now seen corresponding path program 1 times [2021-01-06 20:45:18,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:18,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283270020] [2021-01-06 20:45:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:18,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283270020] [2021-01-06 20:45:18,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:45:18,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:45:18,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137760698] [2021-01-06 20:45:18,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:45:18,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:18,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:45:18,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:45:18,951 INFO L87 Difference]: Start difference. First operand 7317 states and 11252 transitions. Second operand 6 states. [2021-01-06 20:45:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:45:20,653 INFO L93 Difference]: Finished difference Result 28715 states and 44135 transitions. [2021-01-06 20:45:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:45:20,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2021-01-06 20:45:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:45:20,764 INFO L225 Difference]: With dead ends: 28715 [2021-01-06 20:45:20,765 INFO L226 Difference]: Without dead ends: 21433 [2021-01-06 20:45:20,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-06 20:45:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21433 states. [2021-01-06 20:45:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21433 to 21429. [2021-01-06 20:45:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21429 states. [2021-01-06 20:45:22,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21429 states to 21429 states and 32788 transitions. [2021-01-06 20:45:22,642 INFO L78 Accepts]: Start accepts. Automaton has 21429 states and 32788 transitions. Word has length 66 [2021-01-06 20:45:22,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:45:22,642 INFO L481 AbstractCegarLoop]: Abstraction has 21429 states and 32788 transitions. [2021-01-06 20:45:22,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:45:22,642 INFO L276 IsEmpty]: Start isEmpty. Operand 21429 states and 32788 transitions. [2021-01-06 20:45:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 20:45:22,643 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:22,644 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] [2021-01-06 20:45:22,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 20:45:22,644 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:22,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1219486907, now seen corresponding path program 1 times [2021-01-06 20:45:22,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:22,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511361979] [2021-01-06 20:45:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:22,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511361979] [2021-01-06 20:45:22,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:45:22,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 20:45:22,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617089591] [2021-01-06 20:45:22,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 20:45:22,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:22,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 20:45:22,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:45:22,758 INFO L87 Difference]: Start difference. First operand 21429 states and 32788 transitions. Second operand 7 states. [2021-01-06 20:45:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:45:27,016 INFO L93 Difference]: Finished difference Result 109265 states and 167338 transitions. [2021-01-06 20:45:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 20:45:27,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2021-01-06 20:45:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:45:27,328 INFO L225 Difference]: With dead ends: 109265 [2021-01-06 20:45:27,328 INFO L226 Difference]: Without dead ends: 87871 [2021-01-06 20:45:27,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:45:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87871 states. [2021-01-06 20:45:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87871 to 42821. [2021-01-06 20:45:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42821 states. [2021-01-06 20:45:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42821 states to 42821 states and 64580 transitions. [2021-01-06 20:45:31,246 INFO L78 Accepts]: Start accepts. Automaton has 42821 states and 64580 transitions. Word has length 66 [2021-01-06 20:45:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:45:31,247 INFO L481 AbstractCegarLoop]: Abstraction has 42821 states and 64580 transitions. [2021-01-06 20:45:31,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 20:45:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 42821 states and 64580 transitions. [2021-01-06 20:45:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 20:45:31,248 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:31,248 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] [2021-01-06 20:45:31,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 20:45:31,248 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:31,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:31,249 INFO L82 PathProgramCache]: Analyzing trace with hash 831155307, now seen corresponding path program 1 times [2021-01-06 20:45:31,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:31,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849436345] [2021-01-06 20:45:31,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:31,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849436345] [2021-01-06 20:45:31,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:45:31,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:45:31,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122294056] [2021-01-06 20:45:31,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:45:31,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:31,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:45:31,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:45:31,503 INFO L87 Difference]: Start difference. First operand 42821 states and 64580 transitions. Second operand 5 states. [2021-01-06 20:45:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:45:36,572 INFO L93 Difference]: Finished difference Result 87527 states and 131045 transitions. [2021-01-06 20:45:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 20:45:36,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2021-01-06 20:45:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:45:36,749 INFO L225 Difference]: With dead ends: 87527 [2021-01-06 20:45:36,750 INFO L226 Difference]: Without dead ends: 87525 [2021-01-06 20:45:36,780 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 [2021-01-06 20:45:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87525 states. [2021-01-06 20:45:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87525 to 44741. [2021-01-06 20:45:40,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44741 states. [2021-01-06 20:45:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44741 states to 44741 states and 66500 transitions. [2021-01-06 20:45:40,360 INFO L78 Accepts]: Start accepts. Automaton has 44741 states and 66500 transitions. Word has length 67 [2021-01-06 20:45:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:45:40,360 INFO L481 AbstractCegarLoop]: Abstraction has 44741 states and 66500 transitions. [2021-01-06 20:45:40,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:45:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 44741 states and 66500 transitions. [2021-01-06 20:45:40,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 20:45:40,361 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:40,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:45:40,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 20:45:40,362 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash 6583829, now seen corresponding path program 1 times [2021-01-06 20:45:40,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:40,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120448522] [2021-01-06 20:45:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:40,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120448522] [2021-01-06 20:45:40,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:45:40,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:45:40,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406880657] [2021-01-06 20:45:40,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:45:40,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:40,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:45:40,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:45:40,437 INFO L87 Difference]: Start difference. First operand 44741 states and 66500 transitions. Second operand 3 states. [2021-01-06 20:45:44,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:45:44,704 INFO L93 Difference]: Finished difference Result 109059 states and 162000 transitions. [2021-01-06 20:45:44,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:45:44,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2021-01-06 20:45:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:45:44,814 INFO L225 Difference]: With dead ends: 109059 [2021-01-06 20:45:44,814 INFO L226 Difference]: Without dead ends: 64353 [2021-01-06 20:45:44,881 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 [2021-01-06 20:45:44,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64353 states. [2021-01-06 20:45:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64353 to 64351. [2021-01-06 20:45:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64351 states. [2021-01-06 20:45:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64351 states to 64351 states and 95102 transitions. [2021-01-06 20:45:49,324 INFO L78 Accepts]: Start accepts. Automaton has 64351 states and 95102 transitions. Word has length 68 [2021-01-06 20:45:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:45:49,324 INFO L481 AbstractCegarLoop]: Abstraction has 64351 states and 95102 transitions. [2021-01-06 20:45:49,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:45:49,324 INFO L276 IsEmpty]: Start isEmpty. Operand 64351 states and 95102 transitions. [2021-01-06 20:45:49,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-01-06 20:45:49,351 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:45:49,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:45:49,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 20:45:49,351 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:45:49,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:45:49,352 INFO L82 PathProgramCache]: Analyzing trace with hash -83102152, now seen corresponding path program 1 times [2021-01-06 20:45:49,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:45:49,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936768033] [2021-01-06 20:45:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:45:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:45:49,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936768033] [2021-01-06 20:45:49,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528175894] [2021-01-06 20:45:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:45:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:45:49,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 20:45:49,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:45:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 20:45:50,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:45:50,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2021-01-06 20:45:50,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038274855] [2021-01-06 20:45:50,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 20:45:50,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:45:50,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 20:45:50,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-01-06 20:45:50,127 INFO L87 Difference]: Start difference. First operand 64351 states and 95102 transitions. Second operand 13 states. [2021-01-06 20:46:01,984 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-01-06 20:46:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:46:45,209 INFO L93 Difference]: Finished difference Result 618288 states and 908521 transitions. [2021-01-06 20:46:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2021-01-06 20:46:45,209 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2021-01-06 20:46:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:46:46,819 INFO L225 Difference]: With dead ends: 618288 [2021-01-06 20:46:46,819 INFO L226 Difference]: Without dead ends: 557246 [2021-01-06 20:46:47,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12535 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3858, Invalid=23864, Unknown=0, NotChecked=0, Total=27722 [2021-01-06 20:46:47,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557246 states. [2021-01-06 20:47:06,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557246 to 185471. [2021-01-06 20:47:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185471 states. [2021-01-06 20:47:07,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185471 states to 185471 states and 271894 transitions. [2021-01-06 20:47:07,437 INFO L78 Accepts]: Start accepts. Automaton has 185471 states and 271894 transitions. Word has length 93 [2021-01-06 20:47:07,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:47:07,437 INFO L481 AbstractCegarLoop]: Abstraction has 185471 states and 271894 transitions. [2021-01-06 20:47:07,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 20:47:07,437 INFO L276 IsEmpty]: Start isEmpty. Operand 185471 states and 271894 transitions. [2021-01-06 20:47:07,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-06 20:47:07,468 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:47:07,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:47:07,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 20:47:07,683 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:47:07,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:47:07,685 INFO L82 PathProgramCache]: Analyzing trace with hash 396556083, now seen corresponding path program 1 times [2021-01-06 20:47:07,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:47:07,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628052913] [2021-01-06 20:47:07,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:47:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:47:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:47:07,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628052913] [2021-01-06 20:47:07,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:47:07,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:47:07,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319504595] [2021-01-06 20:47:07,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:47:07,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:47:07,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:47:07,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:47:07,751 INFO L87 Difference]: Start difference. First operand 185471 states and 271894 transitions. Second operand 3 states. [2021-01-06 20:47:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:47:31,551 INFO L93 Difference]: Finished difference Result 400446 states and 586510 transitions. [2021-01-06 20:47:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:47:31,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2021-01-06 20:47:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:47:32,175 INFO L225 Difference]: With dead ends: 400446 [2021-01-06 20:47:32,175 INFO L226 Difference]: Without dead ends: 275756 [2021-01-06 20:47:32,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:47:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275756 states.