/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.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 11:26:09,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:26:09,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:26:09,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:26:09,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:26:09,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:26:09,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:26:09,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:26:09,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:26:09,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:26:09,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:26:09,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:26:09,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:26:09,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:26:09,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:26:09,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:26:09,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:26:09,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:26:09,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:26:09,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:26:09,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:26:09,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:26:09,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:26:09,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:26:09,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 11:26:09,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 11:26:09,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 11:26:09,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 11:26:09,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 11:26:09,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 11:26:09,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:26:09,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:26:09,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:26:09,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:26:09,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:26:09,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:26:09,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:26:09,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:26:09,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:26:09,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:26:09,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:26:09,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 11:26:09,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:26:09,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:26:09,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:26:09,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:26:09,310 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:26:09,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:26:09,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:26:09,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:26:09,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:26:09,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:26:09,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:26:09,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:26:09,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:26:09,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:26:09,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:26:09,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:26:09,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:26:09,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:26:09,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:26:09,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:26:09,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:26:09,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:26:09,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:26:09,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:26:09,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:26:09,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:26:09,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:26:09,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:26:09,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:26:09,736 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:26:09,736 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:26:09,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 11:26:09,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8aebf1a33/86226142c2114546a6b3ae61a6c8503c/FLAGfadbf5965 [2020-12-23 11:26:10,496 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:26:10,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 11:26:10,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8aebf1a33/86226142c2114546a6b3ae61a6c8503c/FLAGfadbf5965 [2020-12-23 11:26:10,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8aebf1a33/86226142c2114546a6b3ae61a6c8503c [2020-12-23 11:26:10,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:26:10,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:26:10,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:26:10,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:26:10,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:26:10,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:26:10" (1/1) ... [2020-12-23 11:26:10,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2decc40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:10, skipping insertion in model container [2020-12-23 11:26:10,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:26:10" (1/1) ... [2020-12-23 11:26:10,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:26:10,856 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_1935~0,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[~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[~nl1~0,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[~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[~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_2084~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 11:26:11,096 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.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7402,7415] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~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[~st1~0,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[~__return_2191~0,GLOBAL] 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,] [2020-12-23 11:26:11,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:26:11,221 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_1935~0,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[~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[~nl1~0,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[~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[~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_2084~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 11:26:11,341 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.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7402,7415] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~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[~st1~0,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[~__return_2191~0,GLOBAL] 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,] [2020-12-23 11:26:11,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:26:11,463 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:26:11,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11 WrapperNode [2020-12-23 11:26:11,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:26:11,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:26:11,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:26:11,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:26:11,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (1/1) ... [2020-12-23 11:26:11,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (1/1) ... [2020-12-23 11:26:11,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:26:11,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:26:11,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:26:11,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:26:11,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (1/1) ... [2020-12-23 11:26:11,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (1/1) ... [2020-12-23 11:26:11,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (1/1) ... [2020-12-23 11:26:11,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (1/1) ... [2020-12-23 11:26:11,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (1/1) ... [2020-12-23 11:26:11,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (1/1) ... [2020-12-23 11:26:11,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (1/1) ... [2020-12-23 11:26:11,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:26:11,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:26:11,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:26:11,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:26:11,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:26:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:26:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:26:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:26:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:26:12,894 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:26:12,894 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:26:12,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:26:12 BoogieIcfgContainer [2020-12-23 11:26:12,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:26:12,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:26:12,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:26:12,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:26:12,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:26:10" (1/3) ... [2020-12-23 11:26:12,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cc10d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:26:12, skipping insertion in model container [2020-12-23 11:26:12,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:26:11" (2/3) ... [2020-12-23 11:26:12,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cc10d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:26:12, skipping insertion in model container [2020-12-23 11:26:12,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:26:12" (3/3) ... [2020-12-23 11:26:12,907 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 11:26:12,915 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:26:12,921 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:26:12,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:26:13,012 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:26:13,013 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:26:13,013 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:26:13,013 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:26:13,013 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:26:13,013 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:26:13,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:26:13,014 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:26:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-12-23 11:26:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 11:26:13,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:13,049 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] [2020-12-23 11:26:13,050 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:13,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:13,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1468963440, now seen corresponding path program 1 times [2020-12-23 11:26:13,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:13,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031363798] [2020-12-23 11:26:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:13,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031363798] [2020-12-23 11:26:13,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:13,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:26:13,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455945801] [2020-12-23 11:26:13,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:26:13,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:13,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:26:13,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:13,616 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-12-23 11:26:13,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:13,778 INFO L93 Difference]: Finished difference Result 323 states and 547 transitions. [2020-12-23 11:26:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:26:13,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 11:26:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:13,815 INFO L225 Difference]: With dead ends: 323 [2020-12-23 11:26:13,815 INFO L226 Difference]: Without dead ends: 225 [2020-12-23 11:26:13,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:13,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-12-23 11:26:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2020-12-23 11:26:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-12-23 11:26:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 349 transitions. [2020-12-23 11:26:13,884 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 349 transitions. Word has length 62 [2020-12-23 11:26:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:13,884 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 349 transitions. [2020-12-23 11:26:13,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:26:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 349 transitions. [2020-12-23 11:26:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 11:26:13,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:13,892 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] [2020-12-23 11:26:13,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:26:13,892 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:13,893 INFO L82 PathProgramCache]: Analyzing trace with hash -240910223, now seen corresponding path program 1 times [2020-12-23 11:26:13,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:13,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640365530] [2020-12-23 11:26:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:14,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640365530] [2020-12-23 11:26:14,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:14,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:26:14,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442337879] [2020-12-23 11:26:14,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:26:14,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:14,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:26:14,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:14,076 INFO L87 Difference]: Start difference. First operand 223 states and 349 transitions. Second operand 3 states. [2020-12-23 11:26:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:14,132 INFO L93 Difference]: Finished difference Result 539 states and 869 transitions. [2020-12-23 11:26:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:26:14,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 11:26:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:14,142 INFO L225 Difference]: With dead ends: 539 [2020-12-23 11:26:14,143 INFO L226 Difference]: Without dead ends: 373 [2020-12-23 11:26:14,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:14,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-12-23 11:26:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2020-12-23 11:26:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-12-23 11:26:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 592 transitions. [2020-12-23 11:26:14,192 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 592 transitions. Word has length 64 [2020-12-23 11:26:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:14,193 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 592 transitions. [2020-12-23 11:26:14,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:26:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 592 transitions. [2020-12-23 11:26:14,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 11:26:14,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:14,198 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] [2020-12-23 11:26:14,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:26:14,198 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:14,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1851209774, now seen corresponding path program 1 times [2020-12-23 11:26:14,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:14,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414837100] [2020-12-23 11:26:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:14,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414837100] [2020-12-23 11:26:14,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:14,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:26:14,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248830258] [2020-12-23 11:26:14,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:26:14,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:14,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:26:14,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:14,373 INFO L87 Difference]: Start difference. First operand 371 states and 592 transitions. Second operand 3 states. [2020-12-23 11:26:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:14,440 INFO L93 Difference]: Finished difference Result 967 states and 1570 transitions. [2020-12-23 11:26:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:26:14,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-23 11:26:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:14,451 INFO L225 Difference]: With dead ends: 967 [2020-12-23 11:26:14,451 INFO L226 Difference]: Without dead ends: 653 [2020-12-23 11:26:14,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-12-23 11:26:14,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 651. [2020-12-23 11:26:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-12-23 11:26:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1048 transitions. [2020-12-23 11:26:14,532 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1048 transitions. Word has length 66 [2020-12-23 11:26:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:14,537 INFO L481 AbstractCegarLoop]: Abstraction has 651 states and 1048 transitions. [2020-12-23 11:26:14,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:26:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1048 transitions. [2020-12-23 11:26:14,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 11:26:14,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:14,545 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] [2020-12-23 11:26:14,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:26:14,548 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:14,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1666116403, now seen corresponding path program 1 times [2020-12-23 11:26:14,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:14,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150765080] [2020-12-23 11:26:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:14,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150765080] [2020-12-23 11:26:14,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:14,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:26:14,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175624612] [2020-12-23 11:26:14,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:26:14,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:14,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:26:14,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:26:14,841 INFO L87 Difference]: Start difference. First operand 651 states and 1048 transitions. Second operand 5 states. [2020-12-23 11:26:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:15,232 INFO L93 Difference]: Finished difference Result 2807 states and 4618 transitions. [2020-12-23 11:26:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 11:26:15,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-23 11:26:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:15,248 INFO L225 Difference]: With dead ends: 2807 [2020-12-23 11:26:15,248 INFO L226 Difference]: Without dead ends: 2213 [2020-12-23 11:26:15,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:26:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2020-12-23 11:26:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1170. [2020-12-23 11:26:15,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-12-23 11:26:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1898 transitions. [2020-12-23 11:26:15,341 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1898 transitions. Word has length 68 [2020-12-23 11:26:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:15,341 INFO L481 AbstractCegarLoop]: Abstraction has 1170 states and 1898 transitions. [2020-12-23 11:26:15,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:26:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1898 transitions. [2020-12-23 11:26:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 11:26:15,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:15,344 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] [2020-12-23 11:26:15,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:26:15,345 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:15,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:15,346 INFO L82 PathProgramCache]: Analyzing trace with hash 47496755, now seen corresponding path program 1 times [2020-12-23 11:26:15,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:15,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273950052] [2020-12-23 11:26:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:15,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273950052] [2020-12-23 11:26:15,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:15,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:26:15,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320886130] [2020-12-23 11:26:15,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:26:15,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:15,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:26:15,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:26:15,476 INFO L87 Difference]: Start difference. First operand 1170 states and 1898 transitions. Second operand 4 states. [2020-12-23 11:26:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:15,686 INFO L93 Difference]: Finished difference Result 3409 states and 5599 transitions. [2020-12-23 11:26:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:26:15,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-23 11:26:15,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:15,701 INFO L225 Difference]: With dead ends: 3409 [2020-12-23 11:26:15,701 INFO L226 Difference]: Without dead ends: 2296 [2020-12-23 11:26:15,704 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 [2020-12-23 11:26:15,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2020-12-23 11:26:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1724. [2020-12-23 11:26:15,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1724 states. [2020-12-23 11:26:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2808 transitions. [2020-12-23 11:26:15,817 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2808 transitions. Word has length 69 [2020-12-23 11:26:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:15,818 INFO L481 AbstractCegarLoop]: Abstraction has 1724 states and 2808 transitions. [2020-12-23 11:26:15,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:26:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2808 transitions. [2020-12-23 11:26:15,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:26:15,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:15,820 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] [2020-12-23 11:26:15,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:26:15,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:15,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:15,822 INFO L82 PathProgramCache]: Analyzing trace with hash -613931840, now seen corresponding path program 1 times [2020-12-23 11:26:15,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:15,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607171027] [2020-12-23 11:26:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:15,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607171027] [2020-12-23 11:26:15,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:15,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:26:15,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710185167] [2020-12-23 11:26:15,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:26:15,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:15,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:26:15,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:15,937 INFO L87 Difference]: Start difference. First operand 1724 states and 2808 transitions. Second operand 3 states. [2020-12-23 11:26:16,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:16,131 INFO L93 Difference]: Finished difference Result 3779 states and 6218 transitions. [2020-12-23 11:26:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:26:16,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-23 11:26:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:16,146 INFO L225 Difference]: With dead ends: 3779 [2020-12-23 11:26:16,146 INFO L226 Difference]: Without dead ends: 2591 [2020-12-23 11:26:16,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2020-12-23 11:26:16,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2020-12-23 11:26:16,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2589 states. [2020-12-23 11:26:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 4227 transitions. [2020-12-23 11:26:16,324 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 4227 transitions. Word has length 70 [2020-12-23 11:26:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:16,325 INFO L481 AbstractCegarLoop]: Abstraction has 2589 states and 4227 transitions. [2020-12-23 11:26:16,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:26:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 4227 transitions. [2020-12-23 11:26:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:26:16,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:16,328 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] [2020-12-23 11:26:16,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:26:16,328 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:16,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1843763252, now seen corresponding path program 1 times [2020-12-23 11:26:16,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:16,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573456010] [2020-12-23 11:26:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:16,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573456010] [2020-12-23 11:26:16,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:16,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:26:16,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445136015] [2020-12-23 11:26:16,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:26:16,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:16,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:26:16,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:16,412 INFO L87 Difference]: Start difference. First operand 2589 states and 4227 transitions. Second operand 3 states. [2020-12-23 11:26:16,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:16,624 INFO L93 Difference]: Finished difference Result 5033 states and 8246 transitions. [2020-12-23 11:26:16,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:26:16,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-23 11:26:16,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:16,648 INFO L225 Difference]: With dead ends: 5033 [2020-12-23 11:26:16,648 INFO L226 Difference]: Without dead ends: 3599 [2020-12-23 11:26:16,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:16,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2020-12-23 11:26:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3597. [2020-12-23 11:26:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3597 states. [2020-12-23 11:26:16,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5857 transitions. [2020-12-23 11:26:16,911 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5857 transitions. Word has length 70 [2020-12-23 11:26:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:16,912 INFO L481 AbstractCegarLoop]: Abstraction has 3597 states and 5857 transitions. [2020-12-23 11:26:16,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:26:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5857 transitions. [2020-12-23 11:26:16,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:26:16,920 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:16,921 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] [2020-12-23 11:26:16,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:26:16,921 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:16,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1414453242, now seen corresponding path program 1 times [2020-12-23 11:26:16,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:16,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723629410] [2020-12-23 11:26:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:17,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723629410] [2020-12-23 11:26:17,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:17,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:26:17,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119972053] [2020-12-23 11:26:17,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:26:17,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:17,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:26:17,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:26:17,080 INFO L87 Difference]: Start difference. First operand 3597 states and 5857 transitions. Second operand 4 states. [2020-12-23 11:26:17,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:17,674 INFO L93 Difference]: Finished difference Result 11637 states and 19017 transitions. [2020-12-23 11:26:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:26:17,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-12-23 11:26:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:17,721 INFO L225 Difference]: With dead ends: 11637 [2020-12-23 11:26:17,721 INFO L226 Difference]: Without dead ends: 8115 [2020-12-23 11:26:17,729 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 [2020-12-23 11:26:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2020-12-23 11:26:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 5670. [2020-12-23 11:26:18,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5670 states. [2020-12-23 11:26:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 9202 transitions. [2020-12-23 11:26:18,211 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 9202 transitions. Word has length 70 [2020-12-23 11:26:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:18,211 INFO L481 AbstractCegarLoop]: Abstraction has 5670 states and 9202 transitions. [2020-12-23 11:26:18,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:26:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 9202 transitions. [2020-12-23 11:26:18,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:26:18,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:18,212 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] [2020-12-23 11:26:18,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:26:18,213 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:18,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:18,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1510229994, now seen corresponding path program 1 times [2020-12-23 11:26:18,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:18,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365684788] [2020-12-23 11:26:18,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:18,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365684788] [2020-12-23 11:26:18,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:18,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:26:18,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342741444] [2020-12-23 11:26:18,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:26:18,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:18,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:26:18,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:18,291 INFO L87 Difference]: Start difference. First operand 5670 states and 9202 transitions. Second operand 3 states. [2020-12-23 11:26:18,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:18,781 INFO L93 Difference]: Finished difference Result 11090 states and 18039 transitions. [2020-12-23 11:26:18,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:26:18,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-23 11:26:18,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:18,819 INFO L225 Difference]: With dead ends: 11090 [2020-12-23 11:26:18,819 INFO L226 Difference]: Without dead ends: 7838 [2020-12-23 11:26:18,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2020-12-23 11:26:19,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 7836. [2020-12-23 11:26:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7836 states. [2020-12-23 11:26:19,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 12656 transitions. [2020-12-23 11:26:19,438 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 12656 transitions. Word has length 70 [2020-12-23 11:26:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:19,438 INFO L481 AbstractCegarLoop]: Abstraction has 7836 states and 12656 transitions. [2020-12-23 11:26:19,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:26:19,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 12656 transitions. [2020-12-23 11:26:19,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 11:26:19,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:19,440 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] [2020-12-23 11:26:19,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:26:19,440 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:19,441 INFO L82 PathProgramCache]: Analyzing trace with hash 844989402, now seen corresponding path program 1 times [2020-12-23 11:26:19,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:19,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649546049] [2020-12-23 11:26:19,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:19,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649546049] [2020-12-23 11:26:19,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:19,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:26:19,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877995570] [2020-12-23 11:26:19,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:26:19,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:19,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:26:19,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:26:19,563 INFO L87 Difference]: Start difference. First operand 7836 states and 12656 transitions. Second operand 4 states. [2020-12-23 11:26:20,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:20,709 INFO L93 Difference]: Finished difference Result 25425 states and 41161 transitions. [2020-12-23 11:26:20,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:26:20,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 11:26:20,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:20,755 INFO L225 Difference]: With dead ends: 25425 [2020-12-23 11:26:20,755 INFO L226 Difference]: Without dead ends: 17680 [2020-12-23 11:26:20,769 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 [2020-12-23 11:26:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17680 states. [2020-12-23 11:26:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17680 to 12235. [2020-12-23 11:26:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12235 states. [2020-12-23 11:26:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12235 states to 12235 states and 19663 transitions. [2020-12-23 11:26:21,719 INFO L78 Accepts]: Start accepts. Automaton has 12235 states and 19663 transitions. Word has length 71 [2020-12-23 11:26:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:21,720 INFO L481 AbstractCegarLoop]: Abstraction has 12235 states and 19663 transitions. [2020-12-23 11:26:21,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:26:21,720 INFO L276 IsEmpty]: Start isEmpty. Operand 12235 states and 19663 transitions. [2020-12-23 11:26:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:26:21,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:21,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:26:21,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:26:21,722 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1231314837, now seen corresponding path program 1 times [2020-12-23 11:26:21,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:21,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768109430] [2020-12-23 11:26:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:21,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768109430] [2020-12-23 11:26:21,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:21,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:26:21,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028332386] [2020-12-23 11:26:21,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:26:21,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:21,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:26:21,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:26:21,924 INFO L87 Difference]: Start difference. First operand 12235 states and 19663 transitions. Second operand 4 states. [2020-12-23 11:26:23,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:23,685 INFO L93 Difference]: Finished difference Result 35934 states and 57718 transitions. [2020-12-23 11:26:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:26:23,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-23 11:26:23,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:23,755 INFO L225 Difference]: With dead ends: 35934 [2020-12-23 11:26:23,755 INFO L226 Difference]: Without dead ends: 23708 [2020-12-23 11:26:23,777 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 [2020-12-23 11:26:23,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23708 states. [2020-12-23 11:26:25,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23708 to 23706. [2020-12-23 11:26:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23706 states. [2020-12-23 11:26:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23706 states to 23706 states and 37843 transitions. [2020-12-23 11:26:25,254 INFO L78 Accepts]: Start accepts. Automaton has 23706 states and 37843 transitions. Word has length 73 [2020-12-23 11:26:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:25,255 INFO L481 AbstractCegarLoop]: Abstraction has 23706 states and 37843 transitions. [2020-12-23 11:26:25,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:26:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 23706 states and 37843 transitions. [2020-12-23 11:26:25,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 11:26:25,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:25,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:26:25,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:26:25,257 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:25,258 INFO L82 PathProgramCache]: Analyzing trace with hash -940832745, now seen corresponding path program 1 times [2020-12-23 11:26:25,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:25,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977092591] [2020-12-23 11:26:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:25,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977092591] [2020-12-23 11:26:25,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:25,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:26:25,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644719940] [2020-12-23 11:26:25,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:26:25,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:25,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:26:25,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:25,314 INFO L87 Difference]: Start difference. First operand 23706 states and 37843 transitions. Second operand 3 states. [2020-12-23 11:26:27,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:27,564 INFO L93 Difference]: Finished difference Result 71080 states and 113467 transitions. [2020-12-23 11:26:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:26:27,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 11:26:27,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:27,711 INFO L225 Difference]: With dead ends: 71080 [2020-12-23 11:26:27,711 INFO L226 Difference]: Without dead ends: 47402 [2020-12-23 11:26:27,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:27,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47402 states. [2020-12-23 11:26:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47402 to 23708. [2020-12-23 11:26:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23708 states. [2020-12-23 11:26:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23708 states to 23708 states and 37845 transitions. [2020-12-23 11:26:29,723 INFO L78 Accepts]: Start accepts. Automaton has 23708 states and 37845 transitions. Word has length 74 [2020-12-23 11:26:29,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:29,723 INFO L481 AbstractCegarLoop]: Abstraction has 23708 states and 37845 transitions. [2020-12-23 11:26:29,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:26:29,723 INFO L276 IsEmpty]: Start isEmpty. Operand 23708 states and 37845 transitions. [2020-12-23 11:26:29,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 11:26:29,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:29,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:26:29,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:26:29,725 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:29,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:29,726 INFO L82 PathProgramCache]: Analyzing trace with hash 826320946, now seen corresponding path program 1 times [2020-12-23 11:26:29,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:29,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779294732] [2020-12-23 11:26:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:29,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779294732] [2020-12-23 11:26:29,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:29,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:26:29,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928732798] [2020-12-23 11:26:29,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:26:29,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:29,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:26:29,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:29,776 INFO L87 Difference]: Start difference. First operand 23708 states and 37845 transitions. Second operand 3 states. [2020-12-23 11:26:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:31,410 INFO L93 Difference]: Finished difference Result 57125 states and 91716 transitions. [2020-12-23 11:26:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:26:31,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 11:26:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:31,471 INFO L225 Difference]: With dead ends: 57125 [2020-12-23 11:26:31,471 INFO L226 Difference]: Without dead ends: 33546 [2020-12-23 11:26:31,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33546 states. [2020-12-23 11:26:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33546 to 32634. [2020-12-23 11:26:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32634 states. [2020-12-23 11:26:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32634 states to 32634 states and 52000 transitions. [2020-12-23 11:26:33,773 INFO L78 Accepts]: Start accepts. Automaton has 32634 states and 52000 transitions. Word has length 74 [2020-12-23 11:26:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:33,773 INFO L481 AbstractCegarLoop]: Abstraction has 32634 states and 52000 transitions. [2020-12-23 11:26:33,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:26:33,773 INFO L276 IsEmpty]: Start isEmpty. Operand 32634 states and 52000 transitions. [2020-12-23 11:26:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 11:26:33,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:33,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:26:33,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:26:33,775 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:33,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1329573307, now seen corresponding path program 1 times [2020-12-23 11:26:33,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:33,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368086616] [2020-12-23 11:26:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:33,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368086616] [2020-12-23 11:26:33,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:33,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:26:33,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777407842] [2020-12-23 11:26:33,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:26:33,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:33,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:26:33,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:33,840 INFO L87 Difference]: Start difference. First operand 32634 states and 52000 transitions. Second operand 3 states. [2020-12-23 11:26:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:37,198 INFO L93 Difference]: Finished difference Result 95603 states and 152270 transitions. [2020-12-23 11:26:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:26:37,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 11:26:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:37,339 INFO L225 Difference]: With dead ends: 95603 [2020-12-23 11:26:37,340 INFO L226 Difference]: Without dead ends: 63142 [2020-12-23 11:26:37,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:26:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63142 states. [2020-12-23 11:26:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63142 to 63140. [2020-12-23 11:26:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63140 states. [2020-12-23 11:26:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63140 states to 63140 states and 99869 transitions. [2020-12-23 11:26:41,663 INFO L78 Accepts]: Start accepts. Automaton has 63140 states and 99869 transitions. Word has length 75 [2020-12-23 11:26:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:41,664 INFO L481 AbstractCegarLoop]: Abstraction has 63140 states and 99869 transitions. [2020-12-23 11:26:41,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:26:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 63140 states and 99869 transitions. [2020-12-23 11:26:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 11:26:41,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:41,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:26:41,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:26:41,666 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:41,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:41,667 INFO L82 PathProgramCache]: Analyzing trace with hash -121452674, now seen corresponding path program 1 times [2020-12-23 11:26:41,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:41,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260177675] [2020-12-23 11:26:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:41,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260177675] [2020-12-23 11:26:41,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:41,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:26:41,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627115393] [2020-12-23 11:26:41,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:26:41,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:41,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:26:41,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:26:41,795 INFO L87 Difference]: Start difference. First operand 63140 states and 99869 transitions. Second operand 5 states. [2020-12-23 11:26:48,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:26:48,741 INFO L93 Difference]: Finished difference Result 177450 states and 280542 transitions. [2020-12-23 11:26:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:26:48,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-23 11:26:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:26:49,124 INFO L225 Difference]: With dead ends: 177450 [2020-12-23 11:26:49,125 INFO L226 Difference]: Without dead ends: 114324 [2020-12-23 11:26:49,205 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 [2020-12-23 11:26:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114324 states. [2020-12-23 11:26:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114324 to 114322. [2020-12-23 11:26:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114322 states. [2020-12-23 11:26:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114322 states to 114322 states and 179279 transitions. [2020-12-23 11:26:56,695 INFO L78 Accepts]: Start accepts. Automaton has 114322 states and 179279 transitions. Word has length 75 [2020-12-23 11:26:56,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:26:56,695 INFO L481 AbstractCegarLoop]: Abstraction has 114322 states and 179279 transitions. [2020-12-23 11:26:56,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:26:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 114322 states and 179279 transitions. [2020-12-23 11:26:56,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 11:26:56,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:26:56,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:26:56,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:26:56,698 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:26:56,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:26:56,699 INFO L82 PathProgramCache]: Analyzing trace with hash 816290506, now seen corresponding path program 1 times [2020-12-23 11:26:56,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:26:56,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158014341] [2020-12-23 11:26:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:26:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:26:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:26:57,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158014341] [2020-12-23 11:26:57,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:26:57,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:26:57,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254248095] [2020-12-23 11:26:57,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:26:57,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:26:57,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:26:57,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:26:57,078 INFO L87 Difference]: Start difference. First operand 114322 states and 179279 transitions. Second operand 4 states. [2020-12-23 11:27:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:27:10,841 INFO L93 Difference]: Finished difference Result 335211 states and 525140 transitions. [2020-12-23 11:27:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:27:10,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-23 11:27:10,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:27:11,499 INFO L225 Difference]: With dead ends: 335211 [2020-12-23 11:27:11,499 INFO L226 Difference]: Without dead ends: 220945 [2020-12-23 11:27:11,611 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 [2020-12-23 11:27:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220945 states. [2020-12-23 11:27:26,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220945 to 220943. [2020-12-23 11:27:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220943 states. [2020-12-23 11:27:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220943 states to 220943 states and 343825 transitions. [2020-12-23 11:27:27,014 INFO L78 Accepts]: Start accepts. Automaton has 220943 states and 343825 transitions. Word has length 75 [2020-12-23 11:27:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:27:27,015 INFO L481 AbstractCegarLoop]: Abstraction has 220943 states and 343825 transitions. [2020-12-23 11:27:27,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:27:27,015 INFO L276 IsEmpty]: Start isEmpty. Operand 220943 states and 343825 transitions. [2020-12-23 11:27:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 11:27:27,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:27:27,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:27:27,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:27:27,019 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:27:27,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:27:27,020 INFO L82 PathProgramCache]: Analyzing trace with hash -353140970, now seen corresponding path program 1 times [2020-12-23 11:27:27,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:27:27,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31544632] [2020-12-23 11:27:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:27:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:27:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:27:27,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31544632] [2020-12-23 11:27:27,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:27:27,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:27:27,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727116255] [2020-12-23 11:27:27,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:27:27,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:27:27,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:27:27,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:27:27,073 INFO L87 Difference]: Start difference. First operand 220943 states and 343825 transitions. Second operand 3 states. [2020-12-23 11:27:55,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:27:55,253 INFO L93 Difference]: Finished difference Result 662677 states and 1031242 transitions. [2020-12-23 11:27:55,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:27:55,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 11:27:55,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:27:56,552 INFO L225 Difference]: With dead ends: 662677 [2020-12-23 11:27:56,552 INFO L226 Difference]: Without dead ends: 441825 [2020-12-23 11:27:56,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:27:57,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441825 states. [2020-12-23 11:28:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441825 to 220953. [2020-12-23 11:28:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220953 states. [2020-12-23 11:28:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220953 states to 220953 states and 343835 transitions. [2020-12-23 11:28:15,588 INFO L78 Accepts]: Start accepts. Automaton has 220953 states and 343835 transitions. Word has length 76 [2020-12-23 11:28:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:28:15,589 INFO L481 AbstractCegarLoop]: Abstraction has 220953 states and 343835 transitions. [2020-12-23 11:28:15,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:28:15,589 INFO L276 IsEmpty]: Start isEmpty. Operand 220953 states and 343835 transitions. [2020-12-23 11:28:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 11:28:15,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:28:15,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:28:15,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 11:28:15,609 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:28:15,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:28:15,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1791136339, now seen corresponding path program 1 times [2020-12-23 11:28:15,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:28:15,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047664254] [2020-12-23 11:28:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:28:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:28:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:28:15,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047664254] [2020-12-23 11:28:15,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:28:15,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:28:15,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759157155] [2020-12-23 11:28:15,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:28:15,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:28:15,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:28:15,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:15,686 INFO L87 Difference]: Start difference. First operand 220953 states and 343835 transitions. Second operand 3 states. [2020-12-23 11:28:38,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:28:38,212 INFO L93 Difference]: Finished difference Result 530887 states and 828547 transitions. [2020-12-23 11:28:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:28:38,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 11:28:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:28:38,937 INFO L225 Difference]: With dead ends: 530887 [2020-12-23 11:28:38,938 INFO L226 Difference]: Without dead ends: 310735 [2020-12-23 11:28:39,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:28:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310735 states.