/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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 21:20:28,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 21:20:28,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 21:20:28,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 21:20:28,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 21:20:28,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 21:20:28,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 21:20:28,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 21:20:28,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 21:20:28,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 21:20:28,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 21:20:28,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 21:20:28,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 21:20:28,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 21:20:28,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 21:20:28,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 21:20:28,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 21:20:28,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 21:20:28,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 21:20:28,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 21:20:28,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 21:20:28,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 21:20:28,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 21:20:28,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 21:20:28,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 21:20:28,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 21:20:28,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 21:20:28,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 21:20:28,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 21:20:28,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 21:20:28,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 21:20:28,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 21:20:28,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 21:20:28,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 21:20:28,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 21:20:28,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 21:20:28,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 21:20:28,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 21:20:28,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 21:20:28,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 21:20:28,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 21:20:28,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 21:20:28,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 21:20:28,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 21:20:28,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 21:20:28,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 21:20:28,634 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 21:20:28,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 21:20:28,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 21:20:28,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 21:20:28,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 21:20:28,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 21:20:28,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 21:20:28,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 21:20:28,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 21:20:28,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 21:20:28,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 21:20:28,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 21:20:28,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 21:20:28,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 21:20:28,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 21:20:28,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 21:20:28,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 21:20:28,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 21:20:28,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 21:20:28,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 21:20:28,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 21:20:28,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 21:20:29,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 21:20:29,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 21:20:29,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 21:20:29,077 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 21:20:29,078 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 21:20:29,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 21:20:29,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f951207e/d5cbf0495a3749979ab88c082a0ac4f1/FLAG7f9241401 [2021-01-06 21:20:29,925 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 21:20:29,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 21:20:29,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f951207e/d5cbf0495a3749979ab88c082a0ac4f1/FLAG7f9241401 [2021-01-06 21:20:30,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f951207e/d5cbf0495a3749979ab88c082a0ac4f1 [2021-01-06 21:20:30,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 21:20:30,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 21:20:30,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 21:20:30,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 21:20:30,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 21:20:30,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6153934b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30, skipping insertion in model container [2021-01-06 21:20:30,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 21:20:30,345 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[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~newmax1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~newmax2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~newmax3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__r121~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r131~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r211~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r231~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r311~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r321~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r122~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r132~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r212~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r232~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r312~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r322~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1916~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__newmax~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[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_2065~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2021-01-06 21:20:30,616 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7516,7529] 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[~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[~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[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p32_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p23_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p13_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] [2021-01-06 21:20:30,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 21:20:30,683 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[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~newmax1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~newmax2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~newmax3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__r121~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r131~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r211~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r231~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r311~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r321~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r122~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r132~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r212~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r232~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r312~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r322~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1916~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__newmax~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[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__newmax~0,] left hand side expression in assignment: lhs: VariableLHS[~newmax3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_2065~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2021-01-06 21:20:30,770 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7516,7529] 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[~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[~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[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p32_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p23_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p13_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_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] [2021-01-06 21:20:30,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 21:20:30,826 INFO L208 MainTranslator]: Completed translation [2021-01-06 21:20:30,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30 WrapperNode [2021-01-06 21:20:30,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 21:20:30,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 21:20:30,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 21:20:30,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 21:20:30,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 21:20:30,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 21:20:30,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 21:20:30,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 21:20:30,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (1/1) ... [2021-01-06 21:20:30,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 21:20:30,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 21:20:30,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 21:20:30,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 21:20:30,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 21:20:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 21:20:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 21:20:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 21:20:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 21:20:32,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 21:20:32,173 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 21:20:32,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 09:20:32 BoogieIcfgContainer [2021-01-06 21:20:32,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 21:20:32,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 21:20:32,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 21:20:32,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 21:20:32,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 09:20:30" (1/3) ... [2021-01-06 21:20:32,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20879430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 09:20:32, skipping insertion in model container [2021-01-06 21:20:32,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:20:30" (2/3) ... [2021-01-06 21:20:32,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20879430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 09:20:32, skipping insertion in model container [2021-01-06 21:20:32,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 09:20:32" (3/3) ... [2021-01-06 21:20:32,186 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-01-06 21:20:32,194 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 21:20:32,200 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 21:20:32,217 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 21:20:32,247 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 21:20:32,248 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 21:20:32,248 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 21:20:32,248 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 21:20:32,248 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 21:20:32,249 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 21:20:32,249 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 21:20:32,249 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 21:20:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2021-01-06 21:20:32,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 21:20:32,281 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:32,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:20:32,283 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:32,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1975649421, now seen corresponding path program 1 times [2021-01-06 21:20:32,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:32,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669106614] [2021-01-06 21:20:32,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:32,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669106614] [2021-01-06 21:20:32,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:32,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:20:32,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787156903] [2021-01-06 21:20:32,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:20:32,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:32,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:20:32,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:32,868 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2021-01-06 21:20:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:33,065 INFO L93 Difference]: Finished difference Result 329 states and 551 transitions. [2021-01-06 21:20:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:20:33,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2021-01-06 21:20:33,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:33,099 INFO L225 Difference]: With dead ends: 329 [2021-01-06 21:20:33,099 INFO L226 Difference]: Without dead ends: 225 [2021-01-06 21:20:33,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-01-06 21:20:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2021-01-06 21:20:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-01-06 21:20:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 345 transitions. [2021-01-06 21:20:33,186 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 345 transitions. Word has length 62 [2021-01-06 21:20:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:33,190 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 345 transitions. [2021-01-06 21:20:33,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:20:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 345 transitions. [2021-01-06 21:20:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 21:20:33,197 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:33,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:20:33,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 21:20:33,197 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:33,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:33,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1826541876, now seen corresponding path program 1 times [2021-01-06 21:20:33,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:33,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600159403] [2021-01-06 21:20:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:33,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600159403] [2021-01-06 21:20:33,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:33,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:20:33,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324397180] [2021-01-06 21:20:33,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:20:33,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:33,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:20:33,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:33,362 INFO L87 Difference]: Start difference. First operand 222 states and 345 transitions. Second operand 3 states. [2021-01-06 21:20:33,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:33,468 INFO L93 Difference]: Finished difference Result 536 states and 857 transitions. [2021-01-06 21:20:33,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:20:33,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2021-01-06 21:20:33,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:33,475 INFO L225 Difference]: With dead ends: 536 [2021-01-06 21:20:33,475 INFO L226 Difference]: Without dead ends: 371 [2021-01-06 21:20:33,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-01-06 21:20:33,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2021-01-06 21:20:33,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2021-01-06 21:20:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 580 transitions. [2021-01-06 21:20:33,554 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 580 transitions. Word has length 64 [2021-01-06 21:20:33,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:33,555 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 580 transitions. [2021-01-06 21:20:33,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:20:33,556 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 580 transitions. [2021-01-06 21:20:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 21:20:33,564 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:33,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:20:33,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 21:20:33,564 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:33,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:33,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1385775307, now seen corresponding path program 1 times [2021-01-06 21:20:33,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:33,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727728202] [2021-01-06 21:20:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:33,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727728202] [2021-01-06 21:20:33,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:33,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:20:33,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111631515] [2021-01-06 21:20:33,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:20:33,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:33,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:20:33,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:33,719 INFO L87 Difference]: Start difference. First operand 367 states and 580 transitions. Second operand 3 states. [2021-01-06 21:20:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:33,781 INFO L93 Difference]: Finished difference Result 955 states and 1534 transitions. [2021-01-06 21:20:33,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:20:33,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2021-01-06 21:20:33,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:33,790 INFO L225 Difference]: With dead ends: 955 [2021-01-06 21:20:33,790 INFO L226 Difference]: Without dead ends: 645 [2021-01-06 21:20:33,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:33,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-01-06 21:20:33,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 639. [2021-01-06 21:20:33,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2021-01-06 21:20:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1016 transitions. [2021-01-06 21:20:33,920 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1016 transitions. Word has length 66 [2021-01-06 21:20:33,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:33,921 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 1016 transitions. [2021-01-06 21:20:33,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:20:33,921 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1016 transitions. [2021-01-06 21:20:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 21:20:33,924 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:33,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:20:33,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 21:20:33,925 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:33,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:33,926 INFO L82 PathProgramCache]: Analyzing trace with hash -190660810, now seen corresponding path program 1 times [2021-01-06 21:20:33,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:33,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177470936] [2021-01-06 21:20:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:34,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177470936] [2021-01-06 21:20:34,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:34,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 21:20:34,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649509904] [2021-01-06 21:20:34,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 21:20:34,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:34,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 21:20:34,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:20:34,147 INFO L87 Difference]: Start difference. First operand 639 states and 1016 transitions. Second operand 5 states. [2021-01-06 21:20:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:34,472 INFO L93 Difference]: Finished difference Result 3283 states and 5314 transitions. [2021-01-06 21:20:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 21:20:34,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2021-01-06 21:20:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:34,488 INFO L225 Difference]: With dead ends: 3283 [2021-01-06 21:20:34,489 INFO L226 Difference]: Without dead ends: 2701 [2021-01-06 21:20:34,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:20:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-01-06 21:20:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 1203. [2021-01-06 21:20:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2021-01-06 21:20:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1924 transitions. [2021-01-06 21:20:34,615 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1924 transitions. Word has length 68 [2021-01-06 21:20:34,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:34,616 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1924 transitions. [2021-01-06 21:20:34,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 21:20:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1924 transitions. [2021-01-06 21:20:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 21:20:34,618 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:34,618 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] [2021-01-06 21:20:34,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 21:20:34,618 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:34,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:34,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1678021987, now seen corresponding path program 1 times [2021-01-06 21:20:34,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:34,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326561480] [2021-01-06 21:20:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:34,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326561480] [2021-01-06 21:20:34,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:34,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 21:20:34,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572155279] [2021-01-06 21:20:34,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 21:20:34,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:34,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 21:20:34,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 21:20:34,792 INFO L87 Difference]: Start difference. First operand 1203 states and 1924 transitions. Second operand 4 states. [2021-01-06 21:20:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:35,062 INFO L93 Difference]: Finished difference Result 4395 states and 7079 transitions. [2021-01-06 21:20:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 21:20:35,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2021-01-06 21:20:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:35,082 INFO L225 Difference]: With dead ends: 4395 [2021-01-06 21:20:35,082 INFO L226 Difference]: Without dead ends: 3249 [2021-01-06 21:20:35,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:20:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2021-01-06 21:20:35,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 2217. [2021-01-06 21:20:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2021-01-06 21:20:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3548 transitions. [2021-01-06 21:20:35,274 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3548 transitions. Word has length 69 [2021-01-06 21:20:35,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:35,274 INFO L481 AbstractCegarLoop]: Abstraction has 2217 states and 3548 transitions. [2021-01-06 21:20:35,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 21:20:35,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3548 transitions. [2021-01-06 21:20:35,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-06 21:20:35,276 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:35,277 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] [2021-01-06 21:20:35,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 21:20:35,277 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:35,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:35,278 INFO L82 PathProgramCache]: Analyzing trace with hash -537020195, now seen corresponding path program 1 times [2021-01-06 21:20:35,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:35,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256582000] [2021-01-06 21:20:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:35,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256582000] [2021-01-06 21:20:35,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:35,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 21:20:35,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999647220] [2021-01-06 21:20:35,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 21:20:35,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:35,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 21:20:35,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 21:20:35,385 INFO L87 Difference]: Start difference. First operand 2217 states and 3548 transitions. Second operand 4 states. [2021-01-06 21:20:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:35,773 INFO L93 Difference]: Finished difference Result 6665 states and 10733 transitions. [2021-01-06 21:20:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 21:20:35,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2021-01-06 21:20:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:35,800 INFO L225 Difference]: With dead ends: 6665 [2021-01-06 21:20:35,800 INFO L226 Difference]: Without dead ends: 4505 [2021-01-06 21:20:35,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 21:20:35,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2021-01-06 21:20:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 3275. [2021-01-06 21:20:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3275 states. [2021-01-06 21:20:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5234 transitions. [2021-01-06 21:20:36,119 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5234 transitions. Word has length 70 [2021-01-06 21:20:36,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:36,119 INFO L481 AbstractCegarLoop]: Abstraction has 3275 states and 5234 transitions. [2021-01-06 21:20:36,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 21:20:36,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5234 transitions. [2021-01-06 21:20:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 21:20:36,122 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:36,122 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] [2021-01-06 21:20:36,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 21:20:36,123 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:36,125 INFO L82 PathProgramCache]: Analyzing trace with hash 478855012, now seen corresponding path program 1 times [2021-01-06 21:20:36,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:36,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244363699] [2021-01-06 21:20:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:36,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244363699] [2021-01-06 21:20:36,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:36,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 21:20:36,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984890613] [2021-01-06 21:20:36,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 21:20:36,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:36,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 21:20:36,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 21:20:36,203 INFO L87 Difference]: Start difference. First operand 3275 states and 5234 transitions. Second operand 4 states. [2021-01-06 21:20:36,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:36,686 INFO L93 Difference]: Finished difference Result 9597 states and 15415 transitions. [2021-01-06 21:20:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 21:20:36,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-01-06 21:20:36,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:36,720 INFO L225 Difference]: With dead ends: 9597 [2021-01-06 21:20:36,720 INFO L226 Difference]: Without dead ends: 6379 [2021-01-06 21:20:36,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:20:36,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6379 states. [2021-01-06 21:20:37,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6379 to 4805. [2021-01-06 21:20:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4805 states. [2021-01-06 21:20:37,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 7664 transitions. [2021-01-06 21:20:37,163 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 7664 transitions. Word has length 71 [2021-01-06 21:20:37,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:37,163 INFO L481 AbstractCegarLoop]: Abstraction has 4805 states and 7664 transitions. [2021-01-06 21:20:37,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 21:20:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 7664 transitions. [2021-01-06 21:20:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 21:20:37,167 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:37,167 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] [2021-01-06 21:20:37,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 21:20:37,168 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:37,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1637619353, now seen corresponding path program 1 times [2021-01-06 21:20:37,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:37,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311475719] [2021-01-06 21:20:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:37,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311475719] [2021-01-06 21:20:37,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:37,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:20:37,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078143403] [2021-01-06 21:20:37,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:20:37,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:37,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:20:37,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:37,245 INFO L87 Difference]: Start difference. First operand 4805 states and 7664 transitions. Second operand 3 states. [2021-01-06 21:20:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:37,742 INFO L93 Difference]: Finished difference Result 11565 states and 18531 transitions. [2021-01-06 21:20:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:20:37,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-01-06 21:20:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:37,797 INFO L225 Difference]: With dead ends: 11565 [2021-01-06 21:20:37,797 INFO L226 Difference]: Without dead ends: 6817 [2021-01-06 21:20:37,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6817 states. [2021-01-06 21:20:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6817 to 6815. [2021-01-06 21:20:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6815 states. [2021-01-06 21:20:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6815 states to 6815 states and 10908 transitions. [2021-01-06 21:20:38,352 INFO L78 Accepts]: Start accepts. Automaton has 6815 states and 10908 transitions. Word has length 72 [2021-01-06 21:20:38,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:38,353 INFO L481 AbstractCegarLoop]: Abstraction has 6815 states and 10908 transitions. [2021-01-06 21:20:38,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:20:38,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6815 states and 10908 transitions. [2021-01-06 21:20:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 21:20:38,354 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:38,355 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] [2021-01-06 21:20:38,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 21:20:38,355 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:38,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:38,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1419254461, now seen corresponding path program 1 times [2021-01-06 21:20:38,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:38,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392824039] [2021-01-06 21:20:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:38,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392824039] [2021-01-06 21:20:38,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:38,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:20:38,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376176287] [2021-01-06 21:20:38,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:20:38,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:38,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:20:38,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:38,431 INFO L87 Difference]: Start difference. First operand 6815 states and 10908 transitions. Second operand 3 states. [2021-01-06 21:20:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:39,105 INFO L93 Difference]: Finished difference Result 14947 states and 23969 transitions. [2021-01-06 21:20:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:20:39,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-01-06 21:20:39,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:39,133 INFO L225 Difference]: With dead ends: 14947 [2021-01-06 21:20:39,133 INFO L226 Difference]: Without dead ends: 10127 [2021-01-06 21:20:39,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:39,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10127 states. [2021-01-06 21:20:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10127 to 10125. [2021-01-06 21:20:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10125 states. [2021-01-06 21:20:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10125 states to 10125 states and 16114 transitions. [2021-01-06 21:20:39,889 INFO L78 Accepts]: Start accepts. Automaton has 10125 states and 16114 transitions. Word has length 72 [2021-01-06 21:20:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:39,889 INFO L481 AbstractCegarLoop]: Abstraction has 10125 states and 16114 transitions. [2021-01-06 21:20:39,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:20:39,889 INFO L276 IsEmpty]: Start isEmpty. Operand 10125 states and 16114 transitions. [2021-01-06 21:20:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 21:20:39,890 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:39,891 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] [2021-01-06 21:20:39,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 21:20:39,891 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:39,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:39,892 INFO L82 PathProgramCache]: Analyzing trace with hash 569279253, now seen corresponding path program 1 times [2021-01-06 21:20:39,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:39,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005425520] [2021-01-06 21:20:39,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:39,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005425520] [2021-01-06 21:20:39,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:39,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:20:39,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558533432] [2021-01-06 21:20:39,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:20:39,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:39,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:20:39,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:39,944 INFO L87 Difference]: Start difference. First operand 10125 states and 16114 transitions. Second operand 3 states. [2021-01-06 21:20:40,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:40,816 INFO L93 Difference]: Finished difference Result 21832 states and 34808 transitions. [2021-01-06 21:20:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:20:40,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-01-06 21:20:40,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:40,856 INFO L225 Difference]: With dead ends: 21832 [2021-01-06 21:20:40,856 INFO L226 Difference]: Without dead ends: 14654 [2021-01-06 21:20:40,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14654 states. [2021-01-06 21:20:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14654 to 14652. [2021-01-06 21:20:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14652 states. [2021-01-06 21:20:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14652 states to 14652 states and 23155 transitions. [2021-01-06 21:20:41,646 INFO L78 Accepts]: Start accepts. Automaton has 14652 states and 23155 transitions. Word has length 72 [2021-01-06 21:20:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:41,646 INFO L481 AbstractCegarLoop]: Abstraction has 14652 states and 23155 transitions. [2021-01-06 21:20:41,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:20:41,646 INFO L276 IsEmpty]: Start isEmpty. Operand 14652 states and 23155 transitions. [2021-01-06 21:20:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 21:20:41,647 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:41,647 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] [2021-01-06 21:20:41,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 21:20:41,648 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:41,649 INFO L82 PathProgramCache]: Analyzing trace with hash -899144939, now seen corresponding path program 1 times [2021-01-06 21:20:41,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:41,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733662467] [2021-01-06 21:20:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:41,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733662467] [2021-01-06 21:20:41,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:41,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 21:20:41,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196049869] [2021-01-06 21:20:41,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 21:20:41,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:41,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 21:20:41,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 21:20:41,754 INFO L87 Difference]: Start difference. First operand 14652 states and 23155 transitions. Second operand 4 states. [2021-01-06 21:20:43,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:43,191 INFO L93 Difference]: Finished difference Result 43370 states and 68482 transitions. [2021-01-06 21:20:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 21:20:43,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2021-01-06 21:20:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:43,277 INFO L225 Difference]: With dead ends: 43370 [2021-01-06 21:20:43,277 INFO L226 Difference]: Without dead ends: 28727 [2021-01-06 21:20:43,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:20:43,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28727 states. [2021-01-06 21:20:44,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28727 to 28725. [2021-01-06 21:20:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28725 states. [2021-01-06 21:20:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28725 states to 28725 states and 45136 transitions. [2021-01-06 21:20:45,047 INFO L78 Accepts]: Start accepts. Automaton has 28725 states and 45136 transitions. Word has length 73 [2021-01-06 21:20:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:45,047 INFO L481 AbstractCegarLoop]: Abstraction has 28725 states and 45136 transitions. [2021-01-06 21:20:45,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 21:20:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 28725 states and 45136 transitions. [2021-01-06 21:20:45,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 21:20:45,048 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:45,048 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] [2021-01-06 21:20:45,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 21:20:45,049 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:45,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:45,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1735035679, now seen corresponding path program 1 times [2021-01-06 21:20:45,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:45,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837475258] [2021-01-06 21:20:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:45,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837475258] [2021-01-06 21:20:45,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:45,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:20:45,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973385340] [2021-01-06 21:20:45,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:20:45,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:20:45,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:45,092 INFO L87 Difference]: Start difference. First operand 28725 states and 45136 transitions. Second operand 3 states. [2021-01-06 21:20:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:47,953 INFO L93 Difference]: Finished difference Result 86137 states and 135346 transitions. [2021-01-06 21:20:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:20:47,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2021-01-06 21:20:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:48,089 INFO L225 Difference]: With dead ends: 86137 [2021-01-06 21:20:48,089 INFO L226 Difference]: Without dead ends: 57440 [2021-01-06 21:20:48,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:48,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57440 states. [2021-01-06 21:20:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57440 to 28727. [2021-01-06 21:20:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28727 states. [2021-01-06 21:20:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28727 states to 28727 states and 45138 transitions. [2021-01-06 21:20:50,486 INFO L78 Accepts]: Start accepts. Automaton has 28727 states and 45138 transitions. Word has length 74 [2021-01-06 21:20:50,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:50,487 INFO L481 AbstractCegarLoop]: Abstraction has 28727 states and 45138 transitions. [2021-01-06 21:20:50,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:20:50,487 INFO L276 IsEmpty]: Start isEmpty. Operand 28727 states and 45138 transitions. [2021-01-06 21:20:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 21:20:50,488 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:50,488 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] [2021-01-06 21:20:50,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 21:20:50,488 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:50,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:50,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1282212699, now seen corresponding path program 1 times [2021-01-06 21:20:50,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:50,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669834588] [2021-01-06 21:20:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:50,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669834588] [2021-01-06 21:20:50,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:50,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:20:50,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033485599] [2021-01-06 21:20:50,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:20:50,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:50,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:20:50,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:50,545 INFO L87 Difference]: Start difference. First operand 28727 states and 45138 transitions. Second operand 3 states. [2021-01-06 21:20:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:20:53,297 INFO L93 Difference]: Finished difference Result 67199 states and 105230 transitions. [2021-01-06 21:20:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:20:53,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2021-01-06 21:20:53,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:20:53,379 INFO L225 Difference]: With dead ends: 67199 [2021-01-06 21:20:53,380 INFO L226 Difference]: Without dead ends: 38601 [2021-01-06 21:20:53,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:53,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38601 states. [2021-01-06 21:20:55,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38601 to 37325. [2021-01-06 21:20:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37325 states. [2021-01-06 21:20:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37325 states to 37325 states and 57980 transitions. [2021-01-06 21:20:55,816 INFO L78 Accepts]: Start accepts. Automaton has 37325 states and 57980 transitions. Word has length 74 [2021-01-06 21:20:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:20:55,817 INFO L481 AbstractCegarLoop]: Abstraction has 37325 states and 57980 transitions. [2021-01-06 21:20:55,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:20:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 37325 states and 57980 transitions. [2021-01-06 21:20:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 21:20:55,818 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:20:55,818 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] [2021-01-06 21:20:55,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 21:20:55,819 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:20:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:20:55,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1471377814, now seen corresponding path program 1 times [2021-01-06 21:20:55,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:20:55,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257668926] [2021-01-06 21:20:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:20:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:20:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:20:55,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257668926] [2021-01-06 21:20:55,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:20:55,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:20:55,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192456219] [2021-01-06 21:20:55,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:20:55,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:20:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:20:55,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:20:55,919 INFO L87 Difference]: Start difference. First operand 37325 states and 57980 transitions. Second operand 3 states. [2021-01-06 21:21:00,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:21:00,147 INFO L93 Difference]: Finished difference Result 109336 states and 169650 transitions. [2021-01-06 21:21:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:21:00,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2021-01-06 21:21:00,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:21:00,306 INFO L225 Difference]: With dead ends: 109336 [2021-01-06 21:21:00,306 INFO L226 Difference]: Without dead ends: 72184 [2021-01-06 21:21:00,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:21:00,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72184 states. [2021-01-06 21:21:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72184 to 72182. [2021-01-06 21:21:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72182 states. [2021-01-06 21:21:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72182 states to 72182 states and 111169 transitions. [2021-01-06 21:21:05,101 INFO L78 Accepts]: Start accepts. Automaton has 72182 states and 111169 transitions. Word has length 75 [2021-01-06 21:21:05,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:21:05,101 INFO L481 AbstractCegarLoop]: Abstraction has 72182 states and 111169 transitions. [2021-01-06 21:21:05,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:21:05,101 INFO L276 IsEmpty]: Start isEmpty. Operand 72182 states and 111169 transitions. [2021-01-06 21:21:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 21:21:05,102 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:21:05,103 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] [2021-01-06 21:21:05,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 21:21:05,103 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:21:05,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:21:05,103 INFO L82 PathProgramCache]: Analyzing trace with hash 20351833, now seen corresponding path program 1 times [2021-01-06 21:21:05,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:21:05,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313273993] [2021-01-06 21:21:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:21:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:21:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:21:05,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313273993] [2021-01-06 21:21:05,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:21:05,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 21:21:05,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288223876] [2021-01-06 21:21:05,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 21:21:05,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:21:05,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 21:21:05,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:21:05,220 INFO L87 Difference]: Start difference. First operand 72182 states and 111169 transitions. Second operand 5 states. [2021-01-06 21:21:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:21:15,233 INFO L93 Difference]: Finished difference Result 209221 states and 322197 transitions. [2021-01-06 21:21:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 21:21:15,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2021-01-06 21:21:15,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:21:15,532 INFO L225 Difference]: With dead ends: 209221 [2021-01-06 21:21:15,532 INFO L226 Difference]: Without dead ends: 137053 [2021-01-06 21:21:15,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:21:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137053 states. [2021-01-06 21:21:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137053 to 137051. [2021-01-06 21:21:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137051 states. [2021-01-06 21:21:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137051 states to 137051 states and 209718 transitions. [2021-01-06 21:21:24,925 INFO L78 Accepts]: Start accepts. Automaton has 137051 states and 209718 transitions. Word has length 75 [2021-01-06 21:21:24,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:21:24,926 INFO L481 AbstractCegarLoop]: Abstraction has 137051 states and 209718 transitions. [2021-01-06 21:21:24,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 21:21:24,926 INFO L276 IsEmpty]: Start isEmpty. Operand 137051 states and 209718 transitions. [2021-01-06 21:21:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 21:21:24,928 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:21:24,928 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] [2021-01-06 21:21:24,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 21:21:24,928 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:21:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:21:24,929 INFO L82 PathProgramCache]: Analyzing trace with hash -259692172, now seen corresponding path program 1 times [2021-01-06 21:21:24,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:21:24,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906978650] [2021-01-06 21:21:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:21:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:21:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:21:25,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906978650] [2021-01-06 21:21:25,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:21:25,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 21:21:25,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991718409] [2021-01-06 21:21:25,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 21:21:25,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:21:25,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 21:21:25,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 21:21:25,083 INFO L87 Difference]: Start difference. First operand 137051 states and 209718 transitions. Second operand 4 states. [2021-01-06 21:21:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:21:43,035 INFO L93 Difference]: Finished difference Result 401958 states and 614153 transitions. [2021-01-06 21:21:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 21:21:43,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2021-01-06 21:21:43,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:21:43,647 INFO L225 Difference]: With dead ends: 401958 [2021-01-06 21:21:43,647 INFO L226 Difference]: Without dead ends: 264963 [2021-01-06 21:21:44,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:21:44,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264963 states. [2021-01-06 21:22:01,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264963 to 264961. [2021-01-06 21:22:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264961 states. [2021-01-06 21:22:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264961 states to 264961 states and 402111 transitions. [2021-01-06 21:22:03,010 INFO L78 Accepts]: Start accepts. Automaton has 264961 states and 402111 transitions. Word has length 75 [2021-01-06 21:22:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:22:03,011 INFO L481 AbstractCegarLoop]: Abstraction has 264961 states and 402111 transitions. [2021-01-06 21:22:03,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 21:22:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 264961 states and 402111 transitions. [2021-01-06 21:22:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 21:22:03,014 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:22:03,014 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] [2021-01-06 21:22:03,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 21:22:03,014 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:22:03,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:22:03,015 INFO L82 PathProgramCache]: Analyzing trace with hash -805359648, now seen corresponding path program 1 times [2021-01-06 21:22:03,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:22:03,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871799414] [2021-01-06 21:22:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:22:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:22:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:22:03,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871799414] [2021-01-06 21:22:03,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:22:03,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:22:03,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884218490] [2021-01-06 21:22:03,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:22:03,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:22:03,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:22:03,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:22:03,057 INFO L87 Difference]: Start difference. First operand 264961 states and 402111 transitions. Second operand 3 states. [2021-01-06 21:22:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:22:38,903 INFO L93 Difference]: Finished difference Result 794731 states and 1206100 transitions. [2021-01-06 21:22:38,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:22:38,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-01-06 21:22:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:22:40,419 INFO L225 Difference]: With dead ends: 794731 [2021-01-06 21:22:40,419 INFO L226 Difference]: Without dead ends: 529861 [2021-01-06 21:22:40,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:22:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529861 states.