/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/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:58:13,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:58:13,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:58:13,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:58:13,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:58:13,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:58:13,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:58:13,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:58:13,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:58:13,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:58:13,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:58:13,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:58:13,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:58:13,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:58:13,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:58:13,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:58:13,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:58:13,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:58:13,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:58:13,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:58:13,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:58:13,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:58:13,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:58:13,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:58:13,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:58:13,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:58:13,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:58:13,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:58:13,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:58:13,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:58:13,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:58:13,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:58:13,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:58:13,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:58:13,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:58:13,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:58:13,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:58:13,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:58:13,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:58:13,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:58:13,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:58:13,618 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 09:58:13,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:58:13,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:58:13,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:58:13,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:58:13,669 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:58:13,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:58:13,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:58:13,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:58:13,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:58:13,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:58:13,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:58:13,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:58:13,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:58:13,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:58:13,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:58:13,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:58:13,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:58:13,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:58:13,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:58:13,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:58:13,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:58:13,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:58:13,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:58:13,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:58:13,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:58:13,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:58:14,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:58:14,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:58:14,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:58:14,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:58:14,093 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:58:14,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c [2020-12-23 09:58:14,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dc9fa91f8/04c32634142d40bea3a4b35be88b3989/FLAG15627616f [2020-12-23 09:58:14,845 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:58:14,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c [2020-12-23 09:58:14,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dc9fa91f8/04c32634142d40bea3a4b35be88b3989/FLAG15627616f [2020-12-23 09:58:15,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dc9fa91f8/04c32634142d40bea3a4b35be88b3989 [2020-12-23 09:58:15,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:58:15,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:58:15,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:58:15,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:58:15,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:58:15,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba39f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15, skipping insertion in model container [2020-12-23 09:58:15,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:58:15,200 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:58:15,457 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/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c[11335,11348] [2020-12-23 09:58:15,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:58:15,485 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:58:15,551 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/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c[11335,11348] [2020-12-23 09:58:15,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:58:15,573 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:58:15,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15 WrapperNode [2020-12-23 09:58:15,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:58:15,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:58:15,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:58:15,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:58:15,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:58:15,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:58:15,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:58:15,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:58:15,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (1/1) ... [2020-12-23 09:58:15,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:58:15,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:58:15,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:58:15,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:58:15,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (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 09:58:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:58:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:58:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:58:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:58:16,534 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:58:16,534 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-23 09:58:16,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:58:16 BoogieIcfgContainer [2020-12-23 09:58:16,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:58:16,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:58:16,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:58:16,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:58:16,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:58:15" (1/3) ... [2020-12-23 09:58:16,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33856b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:58:16, skipping insertion in model container [2020-12-23 09:58:16,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:58:15" (2/3) ... [2020-12-23 09:58:16,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33856b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:58:16, skipping insertion in model container [2020-12-23 09:58:16,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:58:16" (3/3) ... [2020-12-23 09:58:16,547 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c [2020-12-23 09:58:16,555 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:58:16,562 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:58:16,586 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:58:16,617 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:58:16,618 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:58:16,618 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:58:16,618 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:58:16,618 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:58:16,618 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:58:16,618 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:58:16,619 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:58:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-12-23 09:58:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:58:16,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:16,651 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] [2020-12-23 09:58:16,651 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:16,659 INFO L82 PathProgramCache]: Analyzing trace with hash 8392247, now seen corresponding path program 1 times [2020-12-23 09:58:16,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:16,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636100930] [2020-12-23 09:58:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:16,966 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 09:58:16,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636100930] [2020-12-23 09:58:16,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:16,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:58:16,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037207093] [2020-12-23 09:58:16,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:58:16,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:16,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:58:16,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:58:16,999 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 2 states. [2020-12-23 09:58:17,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:17,054 INFO L93 Difference]: Finished difference Result 144 states and 241 transitions. [2020-12-23 09:58:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:58:17,056 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-23 09:58:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:17,081 INFO L225 Difference]: With dead ends: 144 [2020-12-23 09:58:17,081 INFO L226 Difference]: Without dead ends: 88 [2020-12-23 09:58:17,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:58:17,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-23 09:58:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-12-23 09:58:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 09:58:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 149 transitions. [2020-12-23 09:58:17,154 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 149 transitions. Word has length 33 [2020-12-23 09:58:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:17,154 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 149 transitions. [2020-12-23 09:58:17,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:58:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 149 transitions. [2020-12-23 09:58:17,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:58:17,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:17,161 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] [2020-12-23 09:58:17,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:58:17,162 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:17,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:17,164 INFO L82 PathProgramCache]: Analyzing trace with hash -501080843, now seen corresponding path program 1 times [2020-12-23 09:58:17,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:17,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740470884] [2020-12-23 09:58:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:17,382 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 09:58:17,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740470884] [2020-12-23 09:58:17,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:17,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:58:17,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109113449] [2020-12-23 09:58:17,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:58:17,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:17,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:58:17,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:58:17,389 INFO L87 Difference]: Start difference. First operand 88 states and 149 transitions. Second operand 5 states. [2020-12-23 09:58:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:17,528 INFO L93 Difference]: Finished difference Result 143 states and 234 transitions. [2020-12-23 09:58:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:58:17,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-23 09:58:17,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:17,530 INFO L225 Difference]: With dead ends: 143 [2020-12-23 09:58:17,531 INFO L226 Difference]: Without dead ends: 88 [2020-12-23 09:58:17,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:58:17,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-23 09:58:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-12-23 09:58:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 09:58:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 118 transitions. [2020-12-23 09:58:17,541 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 118 transitions. Word has length 33 [2020-12-23 09:58:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:17,542 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 118 transitions. [2020-12-23 09:58:17,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:58:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 118 transitions. [2020-12-23 09:58:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:58:17,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:17,544 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] [2020-12-23 09:58:17,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:58:17,545 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:17,546 INFO L82 PathProgramCache]: Analyzing trace with hash 988628396, now seen corresponding path program 1 times [2020-12-23 09:58:17,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:17,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098845762] [2020-12-23 09:58:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:17,729 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 09:58:17,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098845762] [2020-12-23 09:58:17,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:17,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:58:17,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81180473] [2020-12-23 09:58:17,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:58:17,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:17,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:58:17,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:58:17,733 INFO L87 Difference]: Start difference. First operand 88 states and 118 transitions. Second operand 3 states. [2020-12-23 09:58:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:17,766 INFO L93 Difference]: Finished difference Result 184 states and 270 transitions. [2020-12-23 09:58:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:58:17,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:58:17,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:17,771 INFO L225 Difference]: With dead ends: 184 [2020-12-23 09:58:17,771 INFO L226 Difference]: Without dead ends: 133 [2020-12-23 09:58:17,774 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 09:58:17,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-23 09:58:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-12-23 09:58:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-23 09:58:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 187 transitions. [2020-12-23 09:58:17,797 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 187 transitions. Word has length 63 [2020-12-23 09:58:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:17,799 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 187 transitions. [2020-12-23 09:58:17,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:58:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 187 transitions. [2020-12-23 09:58:17,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:58:17,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:17,807 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] [2020-12-23 09:58:17,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:58:17,807 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:17,808 INFO L82 PathProgramCache]: Analyzing trace with hash 243045666, now seen corresponding path program 1 times [2020-12-23 09:58:17,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:17,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767618199] [2020-12-23 09:58:17,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:17,966 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 09:58:17,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767618199] [2020-12-23 09:58:17,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:17,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:58:17,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84074577] [2020-12-23 09:58:17,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:58:17,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:17,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:58:17,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:58:17,970 INFO L87 Difference]: Start difference. First operand 131 states and 187 transitions. Second operand 3 states. [2020-12-23 09:58:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:17,998 INFO L93 Difference]: Finished difference Result 307 states and 467 transitions. [2020-12-23 09:58:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:58:17,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:58:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:18,001 INFO L225 Difference]: With dead ends: 307 [2020-12-23 09:58:18,002 INFO L226 Difference]: Without dead ends: 213 [2020-12-23 09:58:18,003 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 09:58:18,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-12-23 09:58:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2020-12-23 09:58:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-12-23 09:58:18,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 314 transitions. [2020-12-23 09:58:18,023 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 314 transitions. Word has length 63 [2020-12-23 09:58:18,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:18,023 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 314 transitions. [2020-12-23 09:58:18,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:58:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 314 transitions. [2020-12-23 09:58:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:58:18,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:18,028 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] [2020-12-23 09:58:18,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:58:18,030 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:18,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:18,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1696985192, now seen corresponding path program 1 times [2020-12-23 09:58:18,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:18,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871947874] [2020-12-23 09:58:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:18,173 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 09:58:18,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871947874] [2020-12-23 09:58:18,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:18,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:58:18,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604723130] [2020-12-23 09:58:18,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:58:18,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:18,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:58:18,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:58:18,176 INFO L87 Difference]: Start difference. First operand 211 states and 314 transitions. Second operand 3 states. [2020-12-23 09:58:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:18,212 INFO L93 Difference]: Finished difference Result 535 states and 828 transitions. [2020-12-23 09:58:18,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:58:18,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:58:18,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:18,216 INFO L225 Difference]: With dead ends: 535 [2020-12-23 09:58:18,216 INFO L226 Difference]: Without dead ends: 361 [2020-12-23 09:58:18,217 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 09:58:18,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-12-23 09:58:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 359. [2020-12-23 09:58:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-12-23 09:58:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 546 transitions. [2020-12-23 09:58:18,249 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 546 transitions. Word has length 63 [2020-12-23 09:58:18,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:18,250 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 546 transitions. [2020-12-23 09:58:18,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:58:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 546 transitions. [2020-12-23 09:58:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:58:18,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:18,251 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] [2020-12-23 09:58:18,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:58:18,252 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:18,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1003697422, now seen corresponding path program 1 times [2020-12-23 09:58:18,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:18,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137887642] [2020-12-23 09:58:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:18,365 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 09:58:18,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137887642] [2020-12-23 09:58:18,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:18,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:58:18,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021273988] [2020-12-23 09:58:18,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:58:18,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:58:18,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:58:18,370 INFO L87 Difference]: Start difference. First operand 359 states and 546 transitions. Second operand 3 states. [2020-12-23 09:58:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:18,440 INFO L93 Difference]: Finished difference Result 955 states and 1484 transitions. [2020-12-23 09:58:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:58:18,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:58:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:18,445 INFO L225 Difference]: With dead ends: 955 [2020-12-23 09:58:18,445 INFO L226 Difference]: Without dead ends: 633 [2020-12-23 09:58:18,447 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 09:58:18,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-12-23 09:58:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 631. [2020-12-23 09:58:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2020-12-23 09:58:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 966 transitions. [2020-12-23 09:58:18,487 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 966 transitions. Word has length 63 [2020-12-23 09:58:18,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:18,488 INFO L481 AbstractCegarLoop]: Abstraction has 631 states and 966 transitions. [2020-12-23 09:58:18,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:58:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 966 transitions. [2020-12-23 09:58:18,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:58:18,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:18,489 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] [2020-12-23 09:58:18,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:58:18,490 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:18,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:18,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1341490564, now seen corresponding path program 1 times [2020-12-23 09:58:18,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:18,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437600157] [2020-12-23 09:58:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:18,556 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 09:58:18,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437600157] [2020-12-23 09:58:18,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:18,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:58:18,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292905116] [2020-12-23 09:58:18,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:58:18,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:18,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:58:18,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:58:18,559 INFO L87 Difference]: Start difference. First operand 631 states and 966 transitions. Second operand 3 states. [2020-12-23 09:58:18,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:18,610 INFO L93 Difference]: Finished difference Result 1723 states and 2664 transitions. [2020-12-23 09:58:18,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:58:18,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:58:18,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:18,618 INFO L225 Difference]: With dead ends: 1723 [2020-12-23 09:58:18,618 INFO L226 Difference]: Without dead ends: 1129 [2020-12-23 09:58:18,620 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 09:58:18,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-12-23 09:58:18,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1127. [2020-12-23 09:58:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-12-23 09:58:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1718 transitions. [2020-12-23 09:58:18,683 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1718 transitions. Word has length 63 [2020-12-23 09:58:18,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:18,683 INFO L481 AbstractCegarLoop]: Abstraction has 1127 states and 1718 transitions. [2020-12-23 09:58:18,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:58:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1718 transitions. [2020-12-23 09:58:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:58:18,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:18,691 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] [2020-12-23 09:58:18,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:58:18,691 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:18,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1735491334, now seen corresponding path program 1 times [2020-12-23 09:58:18,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:18,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912236469] [2020-12-23 09:58:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:18,826 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 09:58:18,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912236469] [2020-12-23 09:58:18,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:18,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:58:18,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708043770] [2020-12-23 09:58:18,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:58:18,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:18,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:58:18,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:58:18,829 INFO L87 Difference]: Start difference. First operand 1127 states and 1718 transitions. Second operand 7 states. [2020-12-23 09:58:19,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:19,482 INFO L93 Difference]: Finished difference Result 12027 states and 18528 transitions. [2020-12-23 09:58:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:58:19,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-12-23 09:58:19,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:19,543 INFO L225 Difference]: With dead ends: 12027 [2020-12-23 09:58:19,543 INFO L226 Difference]: Without dead ends: 10937 [2020-12-23 09:58:19,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-23 09:58:19,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10937 states. [2020-12-23 09:58:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10937 to 2215. [2020-12-23 09:58:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-12-23 09:58:19,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3334 transitions. [2020-12-23 09:58:19,836 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3334 transitions. Word has length 63 [2020-12-23 09:58:19,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:19,836 INFO L481 AbstractCegarLoop]: Abstraction has 2215 states and 3334 transitions. [2020-12-23 09:58:19,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:58:19,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3334 transitions. [2020-12-23 09:58:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:58:19,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:19,838 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] [2020-12-23 09:58:19,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:58:19,838 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1519410410, now seen corresponding path program 1 times [2020-12-23 09:58:19,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:19,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685239444] [2020-12-23 09:58:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:19,904 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 09:58:19,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685239444] [2020-12-23 09:58:19,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:19,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:58:19,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995845093] [2020-12-23 09:58:19,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:58:19,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:19,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:58:19,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:58:19,907 INFO L87 Difference]: Start difference. First operand 2215 states and 3334 transitions. Second operand 3 states. [2020-12-23 09:58:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:20,094 INFO L93 Difference]: Finished difference Result 5405 states and 8154 transitions. [2020-12-23 09:58:20,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:58:20,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:58:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:20,111 INFO L225 Difference]: With dead ends: 5405 [2020-12-23 09:58:20,111 INFO L226 Difference]: Without dead ends: 3227 [2020-12-23 09:58:20,116 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 09:58:20,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2020-12-23 09:58:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3225. [2020-12-23 09:58:20,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3225 states. [2020-12-23 09:58:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4808 transitions. [2020-12-23 09:58:20,361 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4808 transitions. Word has length 65 [2020-12-23 09:58:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:20,361 INFO L481 AbstractCegarLoop]: Abstraction has 3225 states and 4808 transitions. [2020-12-23 09:58:20,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:58:20,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4808 transitions. [2020-12-23 09:58:20,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:58:20,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:20,363 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] [2020-12-23 09:58:20,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:58:20,363 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:20,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1585903922, now seen corresponding path program 1 times [2020-12-23 09:58:20,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:20,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474437768] [2020-12-23 09:58:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:20,592 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 09:58:20,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474437768] [2020-12-23 09:58:20,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:20,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:58:20,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101361330] [2020-12-23 09:58:20,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:58:20,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:20,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:58:20,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:58:20,595 INFO L87 Difference]: Start difference. First operand 3225 states and 4808 transitions. Second operand 7 states. [2020-12-23 09:58:20,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:20,983 INFO L93 Difference]: Finished difference Result 6413 states and 9578 transitions. [2020-12-23 09:58:20,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:58:20,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-23 09:58:20,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:21,000 INFO L225 Difference]: With dead ends: 6413 [2020-12-23 09:58:21,000 INFO L226 Difference]: Without dead ends: 3227 [2020-12-23 09:58:21,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-23 09:58:21,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2020-12-23 09:58:21,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3225. [2020-12-23 09:58:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3225 states. [2020-12-23 09:58:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4760 transitions. [2020-12-23 09:58:21,226 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4760 transitions. Word has length 65 [2020-12-23 09:58:21,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:21,227 INFO L481 AbstractCegarLoop]: Abstraction has 3225 states and 4760 transitions. [2020-12-23 09:58:21,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:58:21,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4760 transitions. [2020-12-23 09:58:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 09:58:21,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:21,228 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 09:58:21,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:58:21,228 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:21,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:21,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1503658279, now seen corresponding path program 1 times [2020-12-23 09:58:21,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:21,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412469033] [2020-12-23 09:58:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:21,346 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 09:58:21,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412469033] [2020-12-23 09:58:21,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:21,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:58:21,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302742257] [2020-12-23 09:58:21,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:58:21,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:21,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:58:21,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:58:21,349 INFO L87 Difference]: Start difference. First operand 3225 states and 4760 transitions. Second operand 8 states. [2020-12-23 09:58:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:21,887 INFO L93 Difference]: Finished difference Result 6004 states and 8746 transitions. [2020-12-23 09:58:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:58:21,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-12-23 09:58:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:21,922 INFO L225 Difference]: With dead ends: 6004 [2020-12-23 09:58:21,922 INFO L226 Difference]: Without dead ends: 6002 [2020-12-23 09:58:21,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-23 09:58:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-12-23 09:58:22,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 3417. [2020-12-23 09:58:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3417 states. [2020-12-23 09:58:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 4936 transitions. [2020-12-23 09:58:22,260 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 4936 transitions. Word has length 66 [2020-12-23 09:58:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:22,261 INFO L481 AbstractCegarLoop]: Abstraction has 3417 states and 4936 transitions. [2020-12-23 09:58:22,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:58:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 4936 transitions. [2020-12-23 09:58:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 09:58:22,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:22,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:22,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:58:22,265 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:22,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:22,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1040615738, now seen corresponding path program 1 times [2020-12-23 09:58:22,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:22,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118684726] [2020-12-23 09:58:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 09:58:22,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118684726] [2020-12-23 09:58:22,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:22,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:58:22,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138448307] [2020-12-23 09:58:22,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:58:22,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:22,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:58:22,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:58:22,381 INFO L87 Difference]: Start difference. First operand 3417 states and 4936 transitions. Second operand 7 states. [2020-12-23 09:58:23,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:23,680 INFO L93 Difference]: Finished difference Result 20997 states and 30366 transitions. [2020-12-23 09:58:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:58:23,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-23 09:58:23,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:23,742 INFO L225 Difference]: With dead ends: 20997 [2020-12-23 09:58:23,743 INFO L226 Difference]: Without dead ends: 17619 [2020-12-23 09:58:23,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:58:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17619 states. [2020-12-23 09:58:24,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17619 to 6793. [2020-12-23 09:58:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6793 states. [2020-12-23 09:58:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6793 states to 6793 states and 9784 transitions. [2020-12-23 09:58:24,504 INFO L78 Accepts]: Start accepts. Automaton has 6793 states and 9784 transitions. Word has length 93 [2020-12-23 09:58:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:24,504 INFO L481 AbstractCegarLoop]: Abstraction has 6793 states and 9784 transitions. [2020-12-23 09:58:24,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:58:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 6793 states and 9784 transitions. [2020-12-23 09:58:24,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 09:58:24,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:24,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:24,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:58:24,509 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:24,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:24,510 INFO L82 PathProgramCache]: Analyzing trace with hash -728167078, now seen corresponding path program 1 times [2020-12-23 09:58:24,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:24,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960244623] [2020-12-23 09:58:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 09:58:24,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960244623] [2020-12-23 09:58:24,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:24,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:58:24,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350534567] [2020-12-23 09:58:24,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:58:24,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:24,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:58:24,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:58:24,624 INFO L87 Difference]: Start difference. First operand 6793 states and 9784 transitions. Second operand 7 states. [2020-12-23 09:58:25,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:25,994 INFO L93 Difference]: Finished difference Result 24373 states and 35214 transitions. [2020-12-23 09:58:25,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:58:25,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-23 09:58:25,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:26,045 INFO L225 Difference]: With dead ends: 24373 [2020-12-23 09:58:26,046 INFO L226 Difference]: Without dead ends: 20995 [2020-12-23 09:58:26,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:58:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20995 states. [2020-12-23 09:58:27,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20995 to 11865. [2020-12-23 09:58:27,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11865 states. [2020-12-23 09:58:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11865 states to 11865 states and 17016 transitions. [2020-12-23 09:58:27,164 INFO L78 Accepts]: Start accepts. Automaton has 11865 states and 17016 transitions. Word has length 93 [2020-12-23 09:58:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:27,168 INFO L481 AbstractCegarLoop]: Abstraction has 11865 states and 17016 transitions. [2020-12-23 09:58:27,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:58:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 11865 states and 17016 transitions. [2020-12-23 09:58:27,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 09:58:27,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:27,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:27,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:58:27,177 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:27,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:27,178 INFO L82 PathProgramCache]: Analyzing trace with hash 403472762, now seen corresponding path program 1 times [2020-12-23 09:58:27,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:27,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761633197] [2020-12-23 09:58:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 09:58:27,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761633197] [2020-12-23 09:58:27,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:27,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:58:27,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568643864] [2020-12-23 09:58:27,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:58:27,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:27,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:58:27,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:58:27,320 INFO L87 Difference]: Start difference. First operand 11865 states and 17016 transitions. Second operand 7 states. [2020-12-23 09:58:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:28,944 INFO L93 Difference]: Finished difference Result 27749 states and 40062 transitions. [2020-12-23 09:58:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:58:28,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-23 09:58:28,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:29,007 INFO L225 Difference]: With dead ends: 27749 [2020-12-23 09:58:29,007 INFO L226 Difference]: Without dead ends: 24371 [2020-12-23 09:58:29,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:58:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24371 states. [2020-12-23 09:58:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24371 to 15241. [2020-12-23 09:58:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15241 states. [2020-12-23 09:58:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15241 states to 15241 states and 21864 transitions. [2020-12-23 09:58:30,429 INFO L78 Accepts]: Start accepts. Automaton has 15241 states and 21864 transitions. Word has length 93 [2020-12-23 09:58:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:30,430 INFO L481 AbstractCegarLoop]: Abstraction has 15241 states and 21864 transitions. [2020-12-23 09:58:30,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:58:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 15241 states and 21864 transitions. [2020-12-23 09:58:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 09:58:30,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:30,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:30,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:58:30,437 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:30,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:30,438 INFO L82 PathProgramCache]: Analyzing trace with hash -831986278, now seen corresponding path program 1 times [2020-12-23 09:58:30,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:30,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691364018] [2020-12-23 09:58:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 09:58:30,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691364018] [2020-12-23 09:58:30,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:30,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:58:30,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956402962] [2020-12-23 09:58:30,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:58:30,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:30,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:58:30,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:58:30,592 INFO L87 Difference]: Start difference. First operand 15241 states and 21864 transitions. Second operand 7 states. [2020-12-23 09:58:32,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:32,094 INFO L93 Difference]: Finished difference Result 31125 states and 44910 transitions. [2020-12-23 09:58:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:58:32,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-23 09:58:32,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:32,157 INFO L225 Difference]: With dead ends: 31125 [2020-12-23 09:58:32,157 INFO L226 Difference]: Without dead ends: 27747 [2020-12-23 09:58:32,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:58:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27747 states. [2020-12-23 09:58:33,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27747 to 18617. [2020-12-23 09:58:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18617 states. [2020-12-23 09:58:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18617 states to 18617 states and 26712 transitions. [2020-12-23 09:58:33,769 INFO L78 Accepts]: Start accepts. Automaton has 18617 states and 26712 transitions. Word has length 93 [2020-12-23 09:58:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:33,770 INFO L481 AbstractCegarLoop]: Abstraction has 18617 states and 26712 transitions. [2020-12-23 09:58:33,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:58:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 18617 states and 26712 transitions. [2020-12-23 09:58:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 09:58:33,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:33,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:33,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:58:33,779 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:33,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:33,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2041985466, now seen corresponding path program 1 times [2020-12-23 09:58:33,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:33,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103908987] [2020-12-23 09:58:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:58:33,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103908987] [2020-12-23 09:58:33,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:33,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:58:33,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622849567] [2020-12-23 09:58:33,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:58:33,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:33,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:58:33,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:58:33,922 INFO L87 Difference]: Start difference. First operand 18617 states and 26712 transitions. Second operand 7 states. [2020-12-23 09:58:36,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:36,610 INFO L93 Difference]: Finished difference Result 32485 states and 46878 transitions. [2020-12-23 09:58:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:58:36,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-23 09:58:36,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:36,659 INFO L225 Difference]: With dead ends: 32485 [2020-12-23 09:58:36,659 INFO L226 Difference]: Without dead ends: 30115 [2020-12-23 09:58:36,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:58:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30115 states. [2020-12-23 09:58:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30115 to 20985. [2020-12-23 09:58:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20985 states. [2020-12-23 09:58:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20985 states to 20985 states and 30136 transitions. [2020-12-23 09:58:38,260 INFO L78 Accepts]: Start accepts. Automaton has 20985 states and 30136 transitions. Word has length 93 [2020-12-23 09:58:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:38,260 INFO L481 AbstractCegarLoop]: Abstraction has 20985 states and 30136 transitions. [2020-12-23 09:58:38,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:58:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 20985 states and 30136 transitions. [2020-12-23 09:58:38,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 09:58:38,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:38,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:38,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:58:38,268 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:38,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:38,269 INFO L82 PathProgramCache]: Analyzing trace with hash -558210768, now seen corresponding path program 1 times [2020-12-23 09:58:38,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:38,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743648764] [2020-12-23 09:58:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:58:38,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743648764] [2020-12-23 09:58:38,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237182568] [2020-12-23 09:58:38,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:58:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:38,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 09:58:38,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:58:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:58:39,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:58:39,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 09:58:39,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393246122] [2020-12-23 09:58:39,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 09:58:39,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:39,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 09:58:39,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-23 09:58:39,132 INFO L87 Difference]: Start difference. First operand 20985 states and 30136 transitions. Second operand 12 states. [2020-12-23 09:58:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:53,685 INFO L93 Difference]: Finished difference Result 168053 states and 240642 transitions. [2020-12-23 09:58:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-23 09:58:53,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-12-23 09:58:53,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:54,008 INFO L225 Difference]: With dead ends: 168053 [2020-12-23 09:58:54,008 INFO L226 Difference]: Without dead ends: 147107 [2020-12-23 09:58:54,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=727, Invalid=3055, Unknown=0, NotChecked=0, Total=3782 [2020-12-23 09:58:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147107 states. [2020-12-23 09:59:01,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147107 to 81217. [2020-12-23 09:59:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81217 states. [2020-12-23 09:59:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81217 states to 81217 states and 115356 transitions. [2020-12-23 09:59:01,716 INFO L78 Accepts]: Start accepts. Automaton has 81217 states and 115356 transitions. Word has length 94 [2020-12-23 09:59:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:01,717 INFO L481 AbstractCegarLoop]: Abstraction has 81217 states and 115356 transitions. [2020-12-23 09:59:01,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 09:59:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 81217 states and 115356 transitions. [2020-12-23 09:59:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-23 09:59:01,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:01,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:01,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 09:59:01,947 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:01,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:01,948 INFO L82 PathProgramCache]: Analyzing trace with hash -158934606, now seen corresponding path program 1 times [2020-12-23 09:59:01,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:01,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238638520] [2020-12-23 09:59:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:59:02,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238638520] [2020-12-23 09:59:02,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302004443] [2020-12-23 09:59:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:59:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:02,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 09:59:02,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:59:02,817 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:59:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:59:03,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:59:03,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-23 09:59:03,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39577039] [2020-12-23 09:59:03,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 09:59:03,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 09:59:03,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:59:03,231 INFO L87 Difference]: Start difference. First operand 81217 states and 115356 transitions. Second operand 17 states. [2020-12-23 09:59:07,287 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-23 09:59:07,424 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-23 09:59:07,652 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-23 09:59:08,063 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-23 09:59:08,480 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-23 09:59:08,706 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-23 09:59:09,133 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-23 09:59:09,911 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-23 09:59:11,431 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-23 09:59:23,379 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-12-23 10:00:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:00:46,710 INFO L93 Difference]: Finished difference Result 1149886 states and 1606445 transitions. [2020-12-23 10:00:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-12-23 10:00:46,711 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 95 [2020-12-23 10:00:46,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:00:49,189 INFO L225 Difference]: With dead ends: 1149886 [2020-12-23 10:00:49,189 INFO L226 Difference]: Without dead ends: 1068708 [2020-12-23 10:00:49,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11803 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=3612, Invalid=25118, Unknown=0, NotChecked=0, Total=28730 [2020-12-23 10:00:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068708 states.