/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:57:45,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:57:45,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:57:45,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:57:45,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:57:45,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:57:45,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:57:45,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:57:45,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:57:45,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:57:45,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:57:45,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:57:45,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:57:45,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:57:45,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:57:45,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:57:45,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:57:45,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:57:45,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:57:45,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:57:45,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:57:45,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:57:45,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:57:45,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:57:45,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:57:45,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:57:45,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:57:45,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:57:45,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:57:45,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:57:45,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:57:45,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:57:45,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:57:45,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:57:45,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:57:45,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:57:45,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:57:45,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:57:45,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:57:45,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:57:45,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:57:45,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 10:57:45,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:57:45,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:57:45,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:57:45,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:57:45,434 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:57:45,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:57:45,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:57:45,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:57:45,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:57:45,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:57:45,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:57:45,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:57:45,437 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:57:45,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:57:45,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:57:45,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:57:45,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:57:45,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:57:45,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:57:45,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:57:45,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:57:45,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:57:45,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:57:45,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:57:45,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:57:45,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:57:45,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:57:45,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:57:45,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:57:45,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:57:45,951 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:57:45,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:57:46,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ff9f8615a/aa256fb7501843d4a373364abbce6e31/FLAG9accb2021 [2020-12-23 10:57:46,668 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:57:46,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:57:46,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ff9f8615a/aa256fb7501843d4a373364abbce6e31/FLAG9accb2021 [2020-12-23 10:57:46,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ff9f8615a/aa256fb7501843d4a373364abbce6e31 [2020-12-23 10:57:46,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:57:46,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:57:47,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:57:47,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:57:47,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:57:47,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:57:46" (1/1) ... [2020-12-23 10:57:47,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bad9ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47, skipping insertion in model container [2020-12-23 10:57:47,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:57:46" (1/1) ... [2020-12-23 10:57:47,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:57:47,064 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_104949~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_105135~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:57:47,316 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6997,7010] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2020-12-23 10:57:47,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:57:47,409 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_104949~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_105135~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:57:47,464 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6997,7010] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2020-12-23 10:57:47,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:57:47,548 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:57:47,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47 WrapperNode [2020-12-23 10:57:47,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:57:47,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:57:47,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:57:47,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:57:47,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (1/1) ... [2020-12-23 10:57:47,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (1/1) ... [2020-12-23 10:57:47,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:57:47,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:57:47,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:57:47,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:57:47,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (1/1) ... [2020-12-23 10:57:47,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (1/1) ... [2020-12-23 10:57:47,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (1/1) ... [2020-12-23 10:57:47,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (1/1) ... [2020-12-23 10:57:47,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (1/1) ... [2020-12-23 10:57:47,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (1/1) ... [2020-12-23 10:57:47,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (1/1) ... [2020-12-23 10:57:47,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:57:47,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:57:47,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:57:47,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:57:47,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:57:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:57:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:57:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:57:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:57:48,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:57:48,886 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:57:48,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:57:48 BoogieIcfgContainer [2020-12-23 10:57:48,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:57:48,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:57:48,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:57:48,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:57:48,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:57:46" (1/3) ... [2020-12-23 10:57:48,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130964db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:57:48, skipping insertion in model container [2020-12-23 10:57:48,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:57:47" (2/3) ... [2020-12-23 10:57:48,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130964db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:57:48, skipping insertion in model container [2020-12-23 10:57:48,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:57:48" (3/3) ... [2020-12-23 10:57:48,898 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:57:48,905 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:57:48,910 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:57:48,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:57:48,958 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:57:48,958 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:57:48,958 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:57:48,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:57:48,958 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:57:48,959 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:57:48,959 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:57:48,959 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:57:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-12-23 10:57:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:57:48,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:48,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:48,992 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:48,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:48,998 INFO L82 PathProgramCache]: Analyzing trace with hash -539705947, now seen corresponding path program 1 times [2020-12-23 10:57:49,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:49,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585217570] [2020-12-23 10:57:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:57:49,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585217570] [2020-12-23 10:57:49,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:49,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:49,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99192433] [2020-12-23 10:57:49,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:49,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:49,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:49,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:49,518 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-12-23 10:57:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:49,664 INFO L93 Difference]: Finished difference Result 376 states and 609 transitions. [2020-12-23 10:57:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:49,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 10:57:49,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:49,682 INFO L225 Difference]: With dead ends: 376 [2020-12-23 10:57:49,683 INFO L226 Difference]: Without dead ends: 254 [2020-12-23 10:57:49,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-23 10:57:49,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2020-12-23 10:57:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-23 10:57:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 376 transitions. [2020-12-23 10:57:49,756 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 376 transitions. Word has length 73 [2020-12-23 10:57:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:49,756 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 376 transitions. [2020-12-23 10:57:49,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 376 transitions. [2020-12-23 10:57:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 10:57:49,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:49,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:49,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:57:49,761 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:49,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:49,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1913065188, now seen corresponding path program 1 times [2020-12-23 10:57:49,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:49,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860471292] [2020-12-23 10:57:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:57:49,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860471292] [2020-12-23 10:57:49,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:49,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:49,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487804244] [2020-12-23 10:57:49,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:49,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:49,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:49,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:49,928 INFO L87 Difference]: Start difference. First operand 252 states and 376 transitions. Second operand 3 states. [2020-12-23 10:57:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:49,977 INFO L93 Difference]: Finished difference Result 636 states and 988 transitions. [2020-12-23 10:57:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:49,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 10:57:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:49,982 INFO L225 Difference]: With dead ends: 636 [2020-12-23 10:57:49,983 INFO L226 Difference]: Without dead ends: 428 [2020-12-23 10:57:49,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:49,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-12-23 10:57:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2020-12-23 10:57:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-12-23 10:57:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 653 transitions. [2020-12-23 10:57:50,038 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 653 transitions. Word has length 74 [2020-12-23 10:57:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:50,039 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 653 transitions. [2020-12-23 10:57:50,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 653 transitions. [2020-12-23 10:57:50,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 10:57:50,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:50,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:50,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:57:50,046 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:50,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1816530126, now seen corresponding path program 1 times [2020-12-23 10:57:50,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:50,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446172783] [2020-12-23 10:57:50,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:57:50,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446172783] [2020-12-23 10:57:50,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:50,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:50,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840662663] [2020-12-23 10:57:50,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:50,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:50,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:50,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:50,264 INFO L87 Difference]: Start difference. First operand 426 states and 653 transitions. Second operand 3 states. [2020-12-23 10:57:50,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:50,355 INFO L93 Difference]: Finished difference Result 1126 states and 1767 transitions. [2020-12-23 10:57:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:50,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 10:57:50,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:50,363 INFO L225 Difference]: With dead ends: 1126 [2020-12-23 10:57:50,363 INFO L226 Difference]: Without dead ends: 744 [2020-12-23 10:57:50,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:50,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-12-23 10:57:50,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2020-12-23 10:57:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-12-23 10:57:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1153 transitions. [2020-12-23 10:57:50,428 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1153 transitions. Word has length 75 [2020-12-23 10:57:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:50,428 INFO L481 AbstractCegarLoop]: Abstraction has 742 states and 1153 transitions. [2020-12-23 10:57:50,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:50,429 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1153 transitions. [2020-12-23 10:57:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 10:57:50,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:50,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:50,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:57:50,431 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:50,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:50,432 INFO L82 PathProgramCache]: Analyzing trace with hash 2133086223, now seen corresponding path program 1 times [2020-12-23 10:57:50,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:50,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286788651] [2020-12-23 10:57:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:57:50,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286788651] [2020-12-23 10:57:50,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:50,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:50,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578092480] [2020-12-23 10:57:50,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:50,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:50,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:50,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:50,553 INFO L87 Difference]: Start difference. First operand 742 states and 1153 transitions. Second operand 3 states. [2020-12-23 10:57:50,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:50,628 INFO L93 Difference]: Finished difference Result 2010 states and 3163 transitions. [2020-12-23 10:57:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:50,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 10:57:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:50,637 INFO L225 Difference]: With dead ends: 2010 [2020-12-23 10:57:50,637 INFO L226 Difference]: Without dead ends: 1312 [2020-12-23 10:57:50,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:50,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-12-23 10:57:50,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2020-12-23 10:57:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-12-23 10:57:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2045 transitions. [2020-12-23 10:57:50,710 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2045 transitions. Word has length 76 [2020-12-23 10:57:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:50,711 INFO L481 AbstractCegarLoop]: Abstraction has 1310 states and 2045 transitions. [2020-12-23 10:57:50,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2045 transitions. [2020-12-23 10:57:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 10:57:50,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:50,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:50,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:57:50,713 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:50,714 INFO L82 PathProgramCache]: Analyzing trace with hash 19574795, now seen corresponding path program 1 times [2020-12-23 10:57:50,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:50,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993570957] [2020-12-23 10:57:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:57:50,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993570957] [2020-12-23 10:57:50,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:50,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:50,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120811346] [2020-12-23 10:57:50,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:50,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:50,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:50,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:50,831 INFO L87 Difference]: Start difference. First operand 1310 states and 2045 transitions. Second operand 3 states. [2020-12-23 10:57:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:50,972 INFO L93 Difference]: Finished difference Result 3586 states and 5631 transitions. [2020-12-23 10:57:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:50,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 10:57:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:50,985 INFO L225 Difference]: With dead ends: 3586 [2020-12-23 10:57:50,986 INFO L226 Difference]: Without dead ends: 2320 [2020-12-23 10:57:50,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2020-12-23 10:57:51,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2318. [2020-12-23 10:57:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2318 states. [2020-12-23 10:57:51,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3613 transitions. [2020-12-23 10:57:51,124 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3613 transitions. Word has length 77 [2020-12-23 10:57:51,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:51,126 INFO L481 AbstractCegarLoop]: Abstraction has 2318 states and 3613 transitions. [2020-12-23 10:57:51,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3613 transitions. [2020-12-23 10:57:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 10:57:51,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:51,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:51,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:57:51,129 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:51,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:51,129 INFO L82 PathProgramCache]: Analyzing trace with hash 366454550, now seen corresponding path program 1 times [2020-12-23 10:57:51,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:51,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785789212] [2020-12-23 10:57:51,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:57:51,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785789212] [2020-12-23 10:57:51,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:51,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 10:57:51,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205218872] [2020-12-23 10:57:51,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 10:57:51,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:51,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 10:57:51,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:57:51,449 INFO L87 Difference]: Start difference. First operand 2318 states and 3613 transitions. Second operand 8 states. [2020-12-23 10:57:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:52,551 INFO L93 Difference]: Finished difference Result 14122 states and 21987 transitions. [2020-12-23 10:57:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 10:57:52,552 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-23 10:57:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:52,616 INFO L225 Difference]: With dead ends: 14122 [2020-12-23 10:57:52,616 INFO L226 Difference]: Without dead ends: 11848 [2020-12-23 10:57:52,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:57:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2020-12-23 10:57:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 11838. [2020-12-23 10:57:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11838 states. [2020-12-23 10:57:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11838 states to 11838 states and 18381 transitions. [2020-12-23 10:57:53,515 INFO L78 Accepts]: Start accepts. Automaton has 11838 states and 18381 transitions. Word has length 78 [2020-12-23 10:57:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:53,516 INFO L481 AbstractCegarLoop]: Abstraction has 11838 states and 18381 transitions. [2020-12-23 10:57:53,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 10:57:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 11838 states and 18381 transitions. [2020-12-23 10:57:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 10:57:53,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:53,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:53,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:57:53,518 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:53,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:53,519 INFO L82 PathProgramCache]: Analyzing trace with hash -252245181, now seen corresponding path program 1 times [2020-12-23 10:57:53,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:53,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406957328] [2020-12-23 10:57:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:57:53,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406957328] [2020-12-23 10:57:53,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:53,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:57:53,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505099423] [2020-12-23 10:57:53,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:57:53,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:53,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:57:53,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:53,583 INFO L87 Difference]: Start difference. First operand 11838 states and 18381 transitions. Second operand 3 states. [2020-12-23 10:57:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:57:54,894 INFO L93 Difference]: Finished difference Result 32930 states and 51023 transitions. [2020-12-23 10:57:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:57:54,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-23 10:57:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:57:54,973 INFO L225 Difference]: With dead ends: 32930 [2020-12-23 10:57:54,974 INFO L226 Difference]: Without dead ends: 21136 [2020-12-23 10:57:54,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:57:55,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2020-12-23 10:57:56,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 21134. [2020-12-23 10:57:56,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21134 states. [2020-12-23 10:57:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21134 states to 21134 states and 32493 transitions. [2020-12-23 10:57:56,678 INFO L78 Accepts]: Start accepts. Automaton has 21134 states and 32493 transitions. Word has length 80 [2020-12-23 10:57:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:57:56,678 INFO L481 AbstractCegarLoop]: Abstraction has 21134 states and 32493 transitions. [2020-12-23 10:57:56,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:57:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 21134 states and 32493 transitions. [2020-12-23 10:57:56,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 10:57:56,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:57:56,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:57:56,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:57:56,681 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:57:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:57:56,681 INFO L82 PathProgramCache]: Analyzing trace with hash 192381485, now seen corresponding path program 1 times [2020-12-23 10:57:56,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:57:56,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273682162] [2020-12-23 10:57:56,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:57:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:57:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:57:56,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273682162] [2020-12-23 10:57:56,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:57:56,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:57:56,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626198252] [2020-12-23 10:57:56,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:57:56,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:57:56,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:57:56,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:57:56,779 INFO L87 Difference]: Start difference. First operand 21134 states and 32493 transitions. Second operand 6 states. [2020-12-23 10:58:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:58:00,251 INFO L93 Difference]: Finished difference Result 83284 states and 127920 transitions. [2020-12-23 10:58:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:58:00,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-23 10:58:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:58:00,452 INFO L225 Difference]: With dead ends: 83284 [2020-12-23 10:58:00,452 INFO L226 Difference]: Without dead ends: 62194 [2020-12-23 10:58:00,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:58:00,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62194 states. [2020-12-23 10:58:04,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62194 to 62190. [2020-12-23 10:58:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62190 states. [2020-12-23 10:58:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62190 states to 62190 states and 95149 transitions. [2020-12-23 10:58:04,640 INFO L78 Accepts]: Start accepts. Automaton has 62190 states and 95149 transitions. Word has length 80 [2020-12-23 10:58:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:58:04,641 INFO L481 AbstractCegarLoop]: Abstraction has 62190 states and 95149 transitions. [2020-12-23 10:58:04,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:58:04,641 INFO L276 IsEmpty]: Start isEmpty. Operand 62190 states and 95149 transitions. [2020-12-23 10:58:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 10:58:04,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:58:04,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:58:04,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:58:04,642 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:58:04,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:58:04,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1809886376, now seen corresponding path program 1 times [2020-12-23 10:58:04,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:58:04,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693901328] [2020-12-23 10:58:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:58:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:58:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:58:04,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693901328] [2020-12-23 10:58:04,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:58:04,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 10:58:04,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966448890] [2020-12-23 10:58:04,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 10:58:04,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:58:04,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 10:58:04,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:58:04,797 INFO L87 Difference]: Start difference. First operand 62190 states and 95149 transitions. Second operand 8 states. [2020-12-23 10:58:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:58:18,111 INFO L93 Difference]: Finished difference Result 350332 states and 536692 transitions. [2020-12-23 10:58:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 10:58:18,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-23 10:58:18,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:58:19,067 INFO L225 Difference]: With dead ends: 350332 [2020-12-23 10:58:19,067 INFO L226 Difference]: Without dead ends: 288186 [2020-12-23 10:58:19,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-23 10:58:19,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288186 states. [2020-12-23 10:58:28,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288186 to 124334. [2020-12-23 10:58:28,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124334 states. [2020-12-23 10:58:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124334 states to 124334 states and 187949 transitions. [2020-12-23 10:58:29,023 INFO L78 Accepts]: Start accepts. Automaton has 124334 states and 187949 transitions. Word has length 80 [2020-12-23 10:58:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:58:29,023 INFO L481 AbstractCegarLoop]: Abstraction has 124334 states and 187949 transitions. [2020-12-23 10:58:29,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 10:58:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 124334 states and 187949 transitions. [2020-12-23 10:58:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 10:58:29,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:58:29,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:58:29,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:58:29,026 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:58:29,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:58:29,026 INFO L82 PathProgramCache]: Analyzing trace with hash 252446614, now seen corresponding path program 1 times [2020-12-23 10:58:29,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:58:29,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028602614] [2020-12-23 10:58:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:58:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:58:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:58:29,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028602614] [2020-12-23 10:58:29,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:58:29,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:58:29,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212931840] [2020-12-23 10:58:29,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:58:29,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:58:29,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:58:29,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:58:29,129 INFO L87 Difference]: Start difference. First operand 124334 states and 187949 transitions. Second operand 5 states. [2020-12-23 10:58:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:58:44,535 INFO L93 Difference]: Finished difference Result 253232 states and 380462 transitions. [2020-12-23 10:58:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:58:44,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-23 10:58:44,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:58:45,141 INFO L225 Difference]: With dead ends: 253232 [2020-12-23 10:58:45,141 INFO L226 Difference]: Without dead ends: 253230 [2020-12-23 10:58:45,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:58:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253230 states. [2020-12-23 10:58:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253230 to 128942. [2020-12-23 10:58:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128942 states. [2020-12-23 10:58:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128942 states to 128942 states and 192557 transitions. [2020-12-23 10:58:56,126 INFO L78 Accepts]: Start accepts. Automaton has 128942 states and 192557 transitions. Word has length 81 [2020-12-23 10:58:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:58:56,126 INFO L481 AbstractCegarLoop]: Abstraction has 128942 states and 192557 transitions. [2020-12-23 10:58:56,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:58:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 128942 states and 192557 transitions. [2020-12-23 10:58:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 10:58:56,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:58:56,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:58:56,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:58:56,128 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:58:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:58:56,129 INFO L82 PathProgramCache]: Analyzing trace with hash -753516424, now seen corresponding path program 1 times [2020-12-23 10:58:56,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:58:56,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936525119] [2020-12-23 10:58:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:58:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:58:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:58:56,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936525119] [2020-12-23 10:58:56,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:58:56,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:58:56,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523822647] [2020-12-23 10:58:56,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:58:56,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:58:56,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:58:56,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:58:56,204 INFO L87 Difference]: Start difference. First operand 128942 states and 192557 transitions. Second operand 3 states. [2020-12-23 10:59:09,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:59:09,636 INFO L93 Difference]: Finished difference Result 316804 states and 472881 transitions. [2020-12-23 10:59:09,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:59:09,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-23 10:59:09,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:59:09,983 INFO L225 Difference]: With dead ends: 316804 [2020-12-23 10:59:09,983 INFO L226 Difference]: Without dead ends: 187906 [2020-12-23 10:59:10,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:59:10,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187906 states. [2020-12-23 10:59:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187906 to 186848. [2020-12-23 10:59:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186848 states. [2020-12-23 10:59:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186848 states to 186848 states and 277199 transitions. [2020-12-23 10:59:24,561 INFO L78 Accepts]: Start accepts. Automaton has 186848 states and 277199 transitions. Word has length 82 [2020-12-23 10:59:24,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:59:24,561 INFO L481 AbstractCegarLoop]: Abstraction has 186848 states and 277199 transitions. [2020-12-23 10:59:24,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:59:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 186848 states and 277199 transitions. [2020-12-23 10:59:24,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 10:59:24,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:59:24,616 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:59:24,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:59:24,617 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:59:24,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:59:24,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1137103824, now seen corresponding path program 1 times [2020-12-23 10:59:24,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:59:24,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975500629] [2020-12-23 10:59:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:59:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:59:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 10:59:25,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975500629] [2020-12-23 10:59:25,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:59:25,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 10:59:25,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717294781] [2020-12-23 10:59:25,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 10:59:25,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:59:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 10:59:25,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:59:25,125 INFO L87 Difference]: Start difference. First operand 186848 states and 277199 transitions. Second operand 8 states. [2020-12-23 10:59:57,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:59:57,146 INFO L93 Difference]: Finished difference Result 494302 states and 739894 transitions. [2020-12-23 10:59:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 10:59:57,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-23 10:59:57,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:59:58,095 INFO L225 Difference]: With dead ends: 494302 [2020-12-23 10:59:58,095 INFO L226 Difference]: Without dead ends: 412460 [2020-12-23 10:59:58,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 10:59:58,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412460 states. [2020-12-23 11:00:22,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412460 to 262816. [2020-12-23 11:00:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262816 states. [2020-12-23 11:00:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262816 states to 262816 states and 389935 transitions. [2020-12-23 11:00:23,311 INFO L78 Accepts]: Start accepts. Automaton has 262816 states and 389935 transitions. Word has length 112 [2020-12-23 11:00:23,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:00:23,312 INFO L481 AbstractCegarLoop]: Abstraction has 262816 states and 389935 transitions. [2020-12-23 11:00:23,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:00:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 262816 states and 389935 transitions. [2020-12-23 11:00:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 11:00:23,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:00:23,370 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:00:23,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:00:23,371 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:00:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:00:23,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2032826505, now seen corresponding path program 1 times [2020-12-23 11:00:23,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:00:23,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792415665] [2020-12-23 11:00:23,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:00:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:00:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:00:23,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792415665] [2020-12-23 11:00:23,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:00:23,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:00:23,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943318459] [2020-12-23 11:00:23,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:00:23,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:00:23,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:00:23,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:00:23,464 INFO L87 Difference]: Start difference. First operand 262816 states and 389935 transitions. Second operand 3 states.