/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-var-start-time.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:52:32,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:52:32,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:52:32,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:52:32,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:52:32,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:52:32,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:52:32,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:52:32,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:52:32,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:52:32,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:52:32,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:52:32,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:52:32,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:52:32,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:52:32,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:52:32,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:52:32,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:52:32,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:52:32,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:52:32,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:52:32,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:52:32,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:52:32,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:52:32,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:52:32,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:52:32,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:52:32,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:52:32,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:52:32,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:52:32,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:52:32,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:52:32,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:52:32,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:52:32,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:52:32,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:52:32,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:52:32,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:52:32,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:52:32,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:52:32,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:52:32,328 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 09:52:32,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:52:32,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:52:32,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:52:32,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:52:32,382 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:52:32,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:52:32,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:52:32,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:52:32,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:52:32,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:52:32,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:52:32,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:52:32,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:52:32,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:52:32,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:52:32,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:52:32,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:52:32,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:52:32,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:52:32,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:52:32,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:52:32,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:52:32,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:52:32,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:52:32,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:52:32,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:52:32,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:52:32,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:52:32,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:52:32,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:52:32,888 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:52:32,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2020-12-23 09:52:32,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/892c311f3/cf24f0b624454ea5b00de8f36b2f8082/FLAG06e9e5e87 [2020-12-23 09:52:33,622 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:52:33,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2020-12-23 09:52:33,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/892c311f3/cf24f0b624454ea5b00de8f36b2f8082/FLAG06e9e5e87 [2020-12-23 09:52:33,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/892c311f3/cf24f0b624454ea5b00de8f36b2f8082 [2020-12-23 09:52:33,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:52:33,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:52:33,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:52:33,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:52:33,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:52:33,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:52:33" (1/1) ... [2020-12-23 09:52:33,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71fef825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:33, skipping insertion in model container [2020-12-23 09:52:33,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:52:33" (1/1) ... [2020-12-23 09:52:34,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:52:34,061 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[~send1~0,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[~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[~send2~0,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[~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[~send3~0,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[~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[~send4~0,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[~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[~send5~0,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[~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~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[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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 09:52:34,400 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-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2020-12-23 09:52:34,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:52:34,431 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[~send1~0,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[~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[~send2~0,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[~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[~send3~0,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[~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[~send4~0,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[~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[~send5~0,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[~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~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[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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 09:52:34,543 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-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2020-12-23 09:52:34,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:52:34,568 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:52:34,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34 WrapperNode [2020-12-23 09:52:34,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:52:34,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:52:34,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:52:34,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:52:34,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:52:34,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:52:34,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:52:34,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:52:34,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:52:34,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:52:34,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:52:34,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:52:34,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (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 09:52:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:52:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:52:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:52:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:52:35,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:52:35,783 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-23 09:52:35,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:52:35 BoogieIcfgContainer [2020-12-23 09:52:35,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:52:35,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:52:35,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:52:35,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:52:35,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:52:33" (1/3) ... [2020-12-23 09:52:35,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a020bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:52:35, skipping insertion in model container [2020-12-23 09:52:35,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (2/3) ... [2020-12-23 09:52:35,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a020bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:52:35, skipping insertion in model container [2020-12-23 09:52:35,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:52:35" (3/3) ... [2020-12-23 09:52:35,802 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2020-12-23 09:52:35,809 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:52:35,815 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:52:35,837 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:52:35,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:52:35,885 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:52:35,885 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:52:35,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:52:35,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:52:35,885 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:52:35,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:52:35,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:52:35,904 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-12-23 09:52:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:52:35,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:35,914 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 09:52:35,914 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:35,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:35,920 INFO L82 PathProgramCache]: Analyzing trace with hash 563549969, now seen corresponding path program 1 times [2020-12-23 09:52:35,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:35,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549849212] [2020-12-23 09:52:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:36,263 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 09:52:36,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549849212] [2020-12-23 09:52:36,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:36,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:52:36,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856754219] [2020-12-23 09:52:36,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:52:36,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:36,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:52:36,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:52:36,305 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 2 states. [2020-12-23 09:52:36,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:36,368 INFO L93 Difference]: Finished difference Result 207 states and 340 transitions. [2020-12-23 09:52:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:52:36,370 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-23 09:52:36,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:36,392 INFO L225 Difference]: With dead ends: 207 [2020-12-23 09:52:36,393 INFO L226 Difference]: Without dead ends: 118 [2020-12-23 09:52:36,399 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 09:52:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-23 09:52:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-12-23 09:52:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-23 09:52:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 198 transitions. [2020-12-23 09:52:36,466 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 198 transitions. Word has length 33 [2020-12-23 09:52:36,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:36,466 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 198 transitions. [2020-12-23 09:52:36,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:52:36,467 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 198 transitions. [2020-12-23 09:52:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:52:36,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:36,469 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 09:52:36,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:52:36,470 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:36,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:36,471 INFO L82 PathProgramCache]: Analyzing trace with hash 54076879, now seen corresponding path program 1 times [2020-12-23 09:52:36,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:36,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204385478] [2020-12-23 09:52:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:36,596 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 09:52:36,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204385478] [2020-12-23 09:52:36,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:36,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:52:36,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015161132] [2020-12-23 09:52:36,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:52:36,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:36,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:52:36,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:52:36,602 INFO L87 Difference]: Start difference. First operand 118 states and 198 transitions. Second operand 5 states. [2020-12-23 09:52:36,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:36,749 INFO L93 Difference]: Finished difference Result 202 states and 330 transitions. [2020-12-23 09:52:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:52:36,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-23 09:52:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:36,753 INFO L225 Difference]: With dead ends: 202 [2020-12-23 09:52:36,753 INFO L226 Difference]: Without dead ends: 118 [2020-12-23 09:52:36,755 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 09:52:36,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-23 09:52:36,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-12-23 09:52:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-23 09:52:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 166 transitions. [2020-12-23 09:52:36,769 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 166 transitions. Word has length 33 [2020-12-23 09:52:36,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:36,769 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 166 transitions. [2020-12-23 09:52:36,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:52:36,770 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 166 transitions. [2020-12-23 09:52:36,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 09:52:36,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:36,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:36,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:52:36,774 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:36,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:36,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1850253404, now seen corresponding path program 1 times [2020-12-23 09:52:36,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:36,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412062808] [2020-12-23 09:52:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:36,977 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 09:52:36,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412062808] [2020-12-23 09:52:36,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:36,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:36,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662046220] [2020-12-23 09:52:36,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:36,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:36,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:36,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:36,981 INFO L87 Difference]: Start difference. First operand 118 states and 166 transitions. Second operand 3 states. [2020-12-23 09:52:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:37,038 INFO L93 Difference]: Finished difference Result 266 states and 402 transitions. [2020-12-23 09:52:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:37,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 09:52:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:37,047 INFO L225 Difference]: With dead ends: 266 [2020-12-23 09:52:37,049 INFO L226 Difference]: Without dead ends: 186 [2020-12-23 09:52:37,050 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 09:52:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-12-23 09:52:37,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-12-23 09:52:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-12-23 09:52:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 272 transitions. [2020-12-23 09:52:37,082 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 272 transitions. Word has length 64 [2020-12-23 09:52:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:37,083 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 272 transitions. [2020-12-23 09:52:37,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 272 transitions. [2020-12-23 09:52:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:52:37,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:37,089 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 09:52:37,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:52:37,089 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:37,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:37,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1736606100, now seen corresponding path program 1 times [2020-12-23 09:52:37,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:37,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633281679] [2020-12-23 09:52:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:37,276 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 09:52:37,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633281679] [2020-12-23 09:52:37,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:37,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:37,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293698572] [2020-12-23 09:52:37,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:37,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:37,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:37,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:37,281 INFO L87 Difference]: Start difference. First operand 184 states and 272 transitions. Second operand 3 states. [2020-12-23 09:52:37,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:37,325 INFO L93 Difference]: Finished difference Result 452 states and 700 transitions. [2020-12-23 09:52:37,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:37,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:52:37,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:37,330 INFO L225 Difference]: With dead ends: 452 [2020-12-23 09:52:37,330 INFO L226 Difference]: Without dead ends: 306 [2020-12-23 09:52:37,334 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 09:52:37,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-12-23 09:52:37,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-12-23 09:52:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-12-23 09:52:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 463 transitions. [2020-12-23 09:52:37,381 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 463 transitions. Word has length 65 [2020-12-23 09:52:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:37,381 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 463 transitions. [2020-12-23 09:52:37,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 463 transitions. [2020-12-23 09:52:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 09:52:37,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:37,390 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 09:52:37,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:52:37,390 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:37,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:37,391 INFO L82 PathProgramCache]: Analyzing trace with hash 245456436, now seen corresponding path program 1 times [2020-12-23 09:52:37,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:37,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873456663] [2020-12-23 09:52:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:37,545 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 09:52:37,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873456663] [2020-12-23 09:52:37,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:37,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:37,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257285723] [2020-12-23 09:52:37,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:37,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:37,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:37,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:37,552 INFO L87 Difference]: Start difference. First operand 304 states and 463 transitions. Second operand 3 states. [2020-12-23 09:52:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:37,617 INFO L93 Difference]: Finished difference Result 788 states and 1233 transitions. [2020-12-23 09:52:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:37,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-23 09:52:37,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:37,622 INFO L225 Difference]: With dead ends: 788 [2020-12-23 09:52:37,623 INFO L226 Difference]: Without dead ends: 522 [2020-12-23 09:52:37,624 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 09:52:37,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-12-23 09:52:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 520. [2020-12-23 09:52:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-12-23 09:52:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 803 transitions. [2020-12-23 09:52:37,665 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 803 transitions. Word has length 66 [2020-12-23 09:52:37,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:37,666 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 803 transitions. [2020-12-23 09:52:37,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 803 transitions. [2020-12-23 09:52:37,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:52:37,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:37,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:37,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:52:37,671 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:37,672 INFO L82 PathProgramCache]: Analyzing trace with hash 2021301796, now seen corresponding path program 1 times [2020-12-23 09:52:37,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:37,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7597723] [2020-12-23 09:52:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:37,753 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 09:52:37,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7597723] [2020-12-23 09:52:37,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:37,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:37,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272612160] [2020-12-23 09:52:37,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:37,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:37,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:37,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:37,758 INFO L87 Difference]: Start difference. First operand 520 states and 803 transitions. Second operand 3 states. [2020-12-23 09:52:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:37,815 INFO L93 Difference]: Finished difference Result 1388 states and 2173 transitions. [2020-12-23 09:52:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:37,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:52:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:37,824 INFO L225 Difference]: With dead ends: 1388 [2020-12-23 09:52:37,825 INFO L226 Difference]: Without dead ends: 906 [2020-12-23 09:52:37,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-12-23 09:52:37,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2020-12-23 09:52:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-12-23 09:52:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1399 transitions. [2020-12-23 09:52:37,892 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1399 transitions. Word has length 67 [2020-12-23 09:52:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:37,893 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1399 transitions. [2020-12-23 09:52:37,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1399 transitions. [2020-12-23 09:52:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 09:52:37,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:37,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:37,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:52:37,895 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:37,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:37,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1960792892, now seen corresponding path program 1 times [2020-12-23 09:52:37,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:37,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927951733] [2020-12-23 09:52:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:37,963 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 09:52:37,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927951733] [2020-12-23 09:52:37,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:37,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:37,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009959345] [2020-12-23 09:52:37,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:37,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:37,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:37,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:37,967 INFO L87 Difference]: Start difference. First operand 904 states and 1399 transitions. Second operand 3 states. [2020-12-23 09:52:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:38,038 INFO L93 Difference]: Finished difference Result 2444 states and 3801 transitions. [2020-12-23 09:52:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:38,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-23 09:52:38,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:38,049 INFO L225 Difference]: With dead ends: 2444 [2020-12-23 09:52:38,050 INFO L226 Difference]: Without dead ends: 1578 [2020-12-23 09:52:38,052 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 09:52:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2020-12-23 09:52:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1576. [2020-12-23 09:52:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-12-23 09:52:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2423 transitions. [2020-12-23 09:52:38,123 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2423 transitions. Word has length 68 [2020-12-23 09:52:38,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:38,124 INFO L481 AbstractCegarLoop]: Abstraction has 1576 states and 2423 transitions. [2020-12-23 09:52:38,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2423 transitions. [2020-12-23 09:52:38,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:52:38,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:38,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:38,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:52:38,126 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:38,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:38,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1083012428, now seen corresponding path program 1 times [2020-12-23 09:52:38,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:38,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148405484] [2020-12-23 09:52:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:38,319 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 09:52:38,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148405484] [2020-12-23 09:52:38,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:38,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:52:38,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822952605] [2020-12-23 09:52:38,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:52:38,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:38,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:52:38,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:52:38,322 INFO L87 Difference]: Start difference. First operand 1576 states and 2423 transitions. Second operand 7 states. [2020-12-23 09:52:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:38,738 INFO L93 Difference]: Finished difference Result 8386 states and 12828 transitions. [2020-12-23 09:52:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:52:38,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-23 09:52:38,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:38,778 INFO L225 Difference]: With dead ends: 8386 [2020-12-23 09:52:38,778 INFO L226 Difference]: Without dead ends: 6848 [2020-12-23 09:52:38,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:52:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6848 states. [2020-12-23 09:52:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6848 to 6840. [2020-12-23 09:52:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6840 states. [2020-12-23 09:52:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6840 states to 6840 states and 10407 transitions. [2020-12-23 09:52:39,271 INFO L78 Accepts]: Start accepts. Automaton has 6840 states and 10407 transitions. Word has length 69 [2020-12-23 09:52:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:39,272 INFO L481 AbstractCegarLoop]: Abstraction has 6840 states and 10407 transitions. [2020-12-23 09:52:39,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:52:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 6840 states and 10407 transitions. [2020-12-23 09:52:39,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 09:52:39,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:39,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:39,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:52:39,279 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:39,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:39,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1552148145, now seen corresponding path program 1 times [2020-12-23 09:52:39,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:39,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134644342] [2020-12-23 09:52:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:39,538 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 09:52:39,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134644342] [2020-12-23 09:52:39,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:39,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:52:39,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372410875] [2020-12-23 09:52:39,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:52:39,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:39,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:52:39,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:52:39,549 INFO L87 Difference]: Start difference. First operand 6840 states and 10407 transitions. Second operand 7 states. [2020-12-23 09:52:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:41,123 INFO L93 Difference]: Finished difference Result 34692 states and 52941 transitions. [2020-12-23 09:52:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:52:41,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-12-23 09:52:41,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:41,288 INFO L225 Difference]: With dead ends: 34692 [2020-12-23 09:52:41,289 INFO L226 Difference]: Without dead ends: 27890 [2020-12-23 09:52:41,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:52:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27890 states. [2020-12-23 09:52:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27890 to 13640. [2020-12-23 09:52:42,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13640 states. [2020-12-23 09:52:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13640 states to 13640 states and 20455 transitions. [2020-12-23 09:52:42,314 INFO L78 Accepts]: Start accepts. Automaton has 13640 states and 20455 transitions. Word has length 70 [2020-12-23 09:52:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:42,315 INFO L481 AbstractCegarLoop]: Abstraction has 13640 states and 20455 transitions. [2020-12-23 09:52:42,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:52:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 13640 states and 20455 transitions. [2020-12-23 09:52:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:52:42,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:42,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:42,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:52:42,317 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:42,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1255275453, now seen corresponding path program 1 times [2020-12-23 09:52:42,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:42,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341670047] [2020-12-23 09:52:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:42,430 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 09:52:42,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341670047] [2020-12-23 09:52:42,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:42,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:52:42,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128964334] [2020-12-23 09:52:42,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:52:42,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:42,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:52:42,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:52:42,433 INFO L87 Difference]: Start difference. First operand 13640 states and 20455 transitions. Second operand 8 states. [2020-12-23 09:52:44,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:44,165 INFO L93 Difference]: Finished difference Result 28522 states and 42152 transitions. [2020-12-23 09:52:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:52:44,167 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-12-23 09:52:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:44,250 INFO L225 Difference]: With dead ends: 28522 [2020-12-23 09:52:44,250 INFO L226 Difference]: Without dead ends: 28520 [2020-12-23 09:52:44,262 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 09:52:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28520 states. [2020-12-23 09:52:45,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28520 to 14600. [2020-12-23 09:52:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14600 states. [2020-12-23 09:52:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14600 states to 14600 states and 21415 transitions. [2020-12-23 09:52:45,312 INFO L78 Accepts]: Start accepts. Automaton has 14600 states and 21415 transitions. Word has length 71 [2020-12-23 09:52:45,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:45,313 INFO L481 AbstractCegarLoop]: Abstraction has 14600 states and 21415 transitions. [2020-12-23 09:52:45,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:52:45,313 INFO L276 IsEmpty]: Start isEmpty. Operand 14600 states and 21415 transitions. [2020-12-23 09:52:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:52:45,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:45,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:45,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:52:45,315 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:45,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:45,316 INFO L82 PathProgramCache]: Analyzing trace with hash -206254681, now seen corresponding path program 1 times [2020-12-23 09:52:45,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:45,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652573261] [2020-12-23 09:52:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:45,368 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 09:52:45,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652573261] [2020-12-23 09:52:45,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:45,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:45,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192417851] [2020-12-23 09:52:45,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:45,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:45,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:45,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:45,372 INFO L87 Difference]: Start difference. First operand 14600 states and 21415 transitions. Second operand 3 states. [2020-12-23 09:52:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:46,414 INFO L93 Difference]: Finished difference Result 35518 states and 52155 transitions. [2020-12-23 09:52:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:46,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 09:52:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:46,478 INFO L225 Difference]: With dead ends: 35518 [2020-12-23 09:52:46,478 INFO L226 Difference]: Without dead ends: 20956 [2020-12-23 09:52:46,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:46,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20956 states. [2020-12-23 09:52:47,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20956 to 20954. [2020-12-23 09:52:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20954 states. [2020-12-23 09:52:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20954 states to 20954 states and 30633 transitions. [2020-12-23 09:52:47,740 INFO L78 Accepts]: Start accepts. Automaton has 20954 states and 30633 transitions. Word has length 72 [2020-12-23 09:52:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:47,740 INFO L481 AbstractCegarLoop]: Abstraction has 20954 states and 30633 transitions. [2020-12-23 09:52:47,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 20954 states and 30633 transitions. [2020-12-23 09:52:47,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-23 09:52:47,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:47,757 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, 1, 1, 1, 1, 1] [2020-12-23 09:52:47,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:52:47,757 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:47,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:47,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1745394696, now seen corresponding path program 1 times [2020-12-23 09:52:47,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:47,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514665454] [2020-12-23 09:52:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:52:47,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514665454] [2020-12-23 09:52:47,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99143448] [2020-12-23 09:52:47,952 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 09:52:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:48,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 09:52:48,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:52:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:52:48,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:52:48,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 7 [2020-12-23 09:52:48,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318721110] [2020-12-23 09:52:48,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:52:48,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:48,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:52:48,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:52:48,378 INFO L87 Difference]: Start difference. First operand 20954 states and 30633 transitions. Second operand 7 states. [2020-12-23 09:52:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:50,576 INFO L93 Difference]: Finished difference Result 51799 states and 76018 transitions. [2020-12-23 09:52:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:52:50,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-12-23 09:52:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:50,671 INFO L225 Difference]: With dead ends: 51799 [2020-12-23 09:52:50,671 INFO L226 Difference]: Without dead ends: 37237 [2020-12-23 09:52:50,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:52:50,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37237 states. [2020-12-23 09:52:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37237 to 34650. [2020-12-23 09:52:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34650 states. [2020-12-23 09:52:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34650 states to 34650 states and 50441 transitions. [2020-12-23 09:52:53,191 INFO L78 Accepts]: Start accepts. Automaton has 34650 states and 50441 transitions. Word has length 99 [2020-12-23 09:52:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:53,191 INFO L481 AbstractCegarLoop]: Abstraction has 34650 states and 50441 transitions. [2020-12-23 09:52:53,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:52:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 34650 states and 50441 transitions. [2020-12-23 09:52:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 09:52:53,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:53,207 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:53,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 09:52:53,422 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:53,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:53,424 INFO L82 PathProgramCache]: Analyzing trace with hash -152615028, now seen corresponding path program 1 times [2020-12-23 09:52:53,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:53,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431737814] [2020-12-23 09:52:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:53,616 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 09:52:53,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431737814] [2020-12-23 09:52:53,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:53,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:52:53,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456362646] [2020-12-23 09:52:53,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:52:53,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:53,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:52:53,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:52:53,619 INFO L87 Difference]: Start difference. First operand 34650 states and 50441 transitions. Second operand 7 states. [2020-12-23 09:52:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:56,408 INFO L93 Difference]: Finished difference Result 80006 states and 117295 transitions. [2020-12-23 09:52:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:52:56,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-12-23 09:52:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:56,563 INFO L225 Difference]: With dead ends: 80006 [2020-12-23 09:52:56,563 INFO L226 Difference]: Without dead ends: 68628 [2020-12-23 09:52:56,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:52:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68628 states. [2020-12-23 09:52:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68628 to 45690. [2020-12-23 09:52:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45690 states. [2020-12-23 09:52:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45690 states to 45690 states and 66377 transitions. [2020-12-23 09:52:59,335 INFO L78 Accepts]: Start accepts. Automaton has 45690 states and 66377 transitions. Word has length 100 [2020-12-23 09:52:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:59,335 INFO L481 AbstractCegarLoop]: Abstraction has 45690 states and 66377 transitions. [2020-12-23 09:52:59,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:52:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 45690 states and 66377 transitions. [2020-12-23 09:52:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 09:52:59,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:59,350 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:59,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:52:59,351 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:59,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:59,351 INFO L82 PathProgramCache]: Analyzing trace with hash 589805596, now seen corresponding path program 1 times [2020-12-23 09:52:59,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:59,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853016987] [2020-12-23 09:52:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:52:59,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853016987] [2020-12-23 09:52:59,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:59,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:59,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624742262] [2020-12-23 09:52:59,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:59,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:59,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:59,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:59,421 INFO L87 Difference]: Start difference. First operand 45690 states and 66377 transitions. Second operand 3 states. [2020-12-23 09:53:02,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:02,711 INFO L93 Difference]: Finished difference Result 117117 states and 170013 transitions. [2020-12-23 09:53:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:53:02,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-23 09:53:02,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:02,863 INFO L225 Difference]: With dead ends: 117117 [2020-12-23 09:53:02,863 INFO L226 Difference]: Without dead ends: 77051 [2020-12-23 09:53:02,924 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 09:53:03,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77051 states. [2020-12-23 09:53:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77051 to 74825. [2020-12-23 09:53:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74825 states. [2020-12-23 09:53:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74825 states to 74825 states and 107643 transitions. [2020-12-23 09:53:06,899 INFO L78 Accepts]: Start accepts. Automaton has 74825 states and 107643 transitions. Word has length 100 [2020-12-23 09:53:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:53:06,900 INFO L481 AbstractCegarLoop]: Abstraction has 74825 states and 107643 transitions. [2020-12-23 09:53:06,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:53:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 74825 states and 107643 transitions. [2020-12-23 09:53:06,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 09:53:06,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:53:06,921 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:53:06,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:53:06,922 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:53:06,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:53:06,922 INFO L82 PathProgramCache]: Analyzing trace with hash -912723652, now seen corresponding path program 1 times [2020-12-23 09:53:06,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:53:06,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718173363] [2020-12-23 09:53:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:53:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:53:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:53:06,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718173363] [2020-12-23 09:53:06,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:53:06,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:53:06,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704866732] [2020-12-23 09:53:06,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:53:06,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:53:06,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:53:06,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:53:06,985 INFO L87 Difference]: Start difference. First operand 74825 states and 107643 transitions. Second operand 3 states. [2020-12-23 09:53:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:12,074 INFO L93 Difference]: Finished difference Result 144938 states and 208407 transitions. [2020-12-23 09:53:12,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:53:12,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-23 09:53:12,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:12,407 INFO L225 Difference]: With dead ends: 144938 [2020-12-23 09:53:12,407 INFO L226 Difference]: Without dead ends: 104648 [2020-12-23 09:53:12,499 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 09:53:12,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104648 states. [2020-12-23 09:53:17,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104648 to 96478. [2020-12-23 09:53:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96478 states. [2020-12-23 09:53:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96478 states to 96478 states and 137349 transitions. [2020-12-23 09:53:17,359 INFO L78 Accepts]: Start accepts. Automaton has 96478 states and 137349 transitions. Word has length 100 [2020-12-23 09:53:17,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:53:17,359 INFO L481 AbstractCegarLoop]: Abstraction has 96478 states and 137349 transitions. [2020-12-23 09:53:17,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:53:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 96478 states and 137349 transitions. [2020-12-23 09:53:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 09:53:17,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:53:17,379 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:53:17,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:53:17,379 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:53:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:53:17,380 INFO L82 PathProgramCache]: Analyzing trace with hash -485377588, now seen corresponding path program 1 times [2020-12-23 09:53:17,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:53:17,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115270685] [2020-12-23 09:53:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:53:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:53:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:53:17,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115270685] [2020-12-23 09:53:17,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:53:17,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:53:17,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883399586] [2020-12-23 09:53:17,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:53:17,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:53:17,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:53:17,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:53:17,437 INFO L87 Difference]: Start difference. First operand 96478 states and 137349 transitions. Second operand 3 states. [2020-12-23 09:53:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:22,678 INFO L93 Difference]: Finished difference Result 150973 states and 214009 transitions. [2020-12-23 09:53:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:53:22,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-23 09:53:22,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:22,887 INFO L225 Difference]: With dead ends: 150973 [2020-12-23 09:53:22,887 INFO L226 Difference]: Without dead ends: 101591 [2020-12-23 09:53:23,096 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 09:53:23,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101591 states. [2020-12-23 09:53:28,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101591 to 97340. [2020-12-23 09:53:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97340 states. [2020-12-23 09:53:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97340 states to 97340 states and 136276 transitions. [2020-12-23 09:53:28,242 INFO L78 Accepts]: Start accepts. Automaton has 97340 states and 136276 transitions. Word has length 100 [2020-12-23 09:53:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:53:28,243 INFO L481 AbstractCegarLoop]: Abstraction has 97340 states and 136276 transitions. [2020-12-23 09:53:28,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:53:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 97340 states and 136276 transitions. [2020-12-23 09:53:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 09:53:28,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:53:28,266 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:53:28,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:53:28,266 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:53:28,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:53:28,267 INFO L82 PathProgramCache]: Analyzing trace with hash 567734444, now seen corresponding path program 1 times [2020-12-23 09:53:28,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:53:28,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645000476] [2020-12-23 09:53:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:53:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:53:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:53:28,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645000476] [2020-12-23 09:53:28,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:53:28,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:53:28,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722945024] [2020-12-23 09:53:28,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:53:28,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:53:28,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:53:28,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:53:28,333 INFO L87 Difference]: Start difference. First operand 97340 states and 136276 transitions. Second operand 3 states. [2020-12-23 09:53:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:35,437 INFO L93 Difference]: Finished difference Result 239723 states and 335013 transitions. [2020-12-23 09:53:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:53:35,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-23 09:53:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:35,806 INFO L225 Difference]: With dead ends: 239723 [2020-12-23 09:53:35,807 INFO L226 Difference]: Without dead ends: 156669 [2020-12-23 09:53:35,887 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 09:53:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156669 states. [2020-12-23 09:53:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156669 to 155243. [2020-12-23 09:53:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155243 states. [2020-12-23 09:53:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155243 states to 155243 states and 214611 transitions. [2020-12-23 09:53:43,997 INFO L78 Accepts]: Start accepts. Automaton has 155243 states and 214611 transitions. Word has length 100 [2020-12-23 09:53:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:53:43,997 INFO L481 AbstractCegarLoop]: Abstraction has 155243 states and 214611 transitions. [2020-12-23 09:53:43,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:53:43,998 INFO L276 IsEmpty]: Start isEmpty. Operand 155243 states and 214611 transitions. [2020-12-23 09:53:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 09:53:44,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:53:44,030 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:53:44,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:53:44,031 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:53:44,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:53:44,031 INFO L82 PathProgramCache]: Analyzing trace with hash -588156778, now seen corresponding path program 1 times [2020-12-23 09:53:44,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:53:44,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330499308] [2020-12-23 09:53:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:53:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:53:44,218 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 09:53:44,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330499308] [2020-12-23 09:53:44,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:53:44,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:53:44,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838569639] [2020-12-23 09:53:44,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:53:44,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:53:44,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:53:44,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:53:44,221 INFO L87 Difference]: Start difference. First operand 155243 states and 214611 transitions. Second operand 7 states. [2020-12-23 09:53:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:58,634 INFO L93 Difference]: Finished difference Result 360270 states and 503407 transitions. [2020-12-23 09:53:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:53:58,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-12-23 09:53:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:59,374 INFO L225 Difference]: With dead ends: 360270 [2020-12-23 09:53:59,374 INFO L226 Difference]: Without dead ends: 318214 [2020-12-23 09:53:59,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:53:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318214 states. [2020-12-23 09:54:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318214 to 195531. [2020-12-23 09:54:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195531 states. [2020-12-23 09:54:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195531 states to 195531 states and 270611 transitions. [2020-12-23 09:54:10,943 INFO L78 Accepts]: Start accepts. Automaton has 195531 states and 270611 transitions. Word has length 100 [2020-12-23 09:54:10,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:54:10,944 INFO L481 AbstractCegarLoop]: Abstraction has 195531 states and 270611 transitions. [2020-12-23 09:54:10,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:54:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 195531 states and 270611 transitions. [2020-12-23 09:54:10,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 09:54:10,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:54:10,968 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:54:10,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:54:10,968 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:54:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:54:10,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1877694796, now seen corresponding path program 1 times [2020-12-23 09:54:10,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:54:10,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132305080] [2020-12-23 09:54:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:54:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:54:11,110 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 09:54:11,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132305080] [2020-12-23 09:54:11,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:54:11,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:54:11,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577743793] [2020-12-23 09:54:11,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:54:11,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:54:11,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:54:11,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:54:11,113 INFO L87 Difference]: Start difference. First operand 195531 states and 270611 transitions. Second operand 7 states. [2020-12-23 09:54:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:54:29,656 INFO L93 Difference]: Finished difference Result 387166 states and 540476 transitions. [2020-12-23 09:54:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:54:29,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-12-23 09:54:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:54:30,296 INFO L225 Difference]: With dead ends: 387166 [2020-12-23 09:54:30,296 INFO L226 Difference]: Without dead ends: 359100 [2020-12-23 09:54:30,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:54:30,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359100 states. [2020-12-23 09:54:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359100 to 222443. [2020-12-23 09:54:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222443 states. [2020-12-23 09:54:44,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222443 states to 222443 states and 308115 transitions. [2020-12-23 09:54:44,514 INFO L78 Accepts]: Start accepts. Automaton has 222443 states and 308115 transitions. Word has length 100 [2020-12-23 09:54:44,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:54:44,514 INFO L481 AbstractCegarLoop]: Abstraction has 222443 states and 308115 transitions. [2020-12-23 09:54:44,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:54:44,515 INFO L276 IsEmpty]: Start isEmpty. Operand 222443 states and 308115 transitions. [2020-12-23 09:54:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 09:54:44,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:54:44,534 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:54:44,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:54:44,534 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:54:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:54:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash 170158188, now seen corresponding path program 1 times [2020-12-23 09:54:44,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:54:44,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262872099] [2020-12-23 09:54:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:54:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:54:44,694 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 09:54:44,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262872099] [2020-12-23 09:54:44,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:54:44,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:54:44,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374968339] [2020-12-23 09:54:44,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:54:44,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:54:44,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:54:44,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:54:44,696 INFO L87 Difference]: Start difference. First operand 222443 states and 308115 transitions. Second operand 7 states.