/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 21:08:30,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 21:08:30,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 21:08:30,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 21:08:30,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 21:08:30,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 21:08:30,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 21:08:30,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 21:08:30,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 21:08:30,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 21:08:30,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 21:08:30,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 21:08:30,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 21:08:30,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 21:08:30,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 21:08:30,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 21:08:30,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 21:08:30,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 21:08:30,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 21:08:30,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 21:08:30,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 21:08:30,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 21:08:30,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 21:08:30,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 21:08:30,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 21:08:30,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 21:08:30,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 21:08:30,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 21:08:30,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 21:08:30,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 21:08:30,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 21:08:30,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 21:08:30,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 21:08:30,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 21:08:30,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 21:08:30,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 21:08:30,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 21:08:30,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 21:08:30,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 21:08:30,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 21:08:30,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 21:08:30,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 21:08:30,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 21:08:30,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 21:08:30,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 21:08:30,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 21:08:30,483 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 21:08:30,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 21:08:30,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 21:08:30,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 21:08:30,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 21:08:30,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 21:08:30,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 21:08:30,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 21:08:30,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 21:08:30,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 21:08:30,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 21:08:30,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 21:08:30,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 21:08:30,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 21:08:30,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 21:08:30,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 21:08:30,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 21:08:30,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 21:08:30,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 21:08:30,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 21:08:30,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 21:08:30,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 21:08:30,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 21:08:30,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 21:08:30,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 21:08:30,997 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 21:08:30,997 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 21:08:30,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2021-01-06 21:08:31,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/887e827e5/e6698e8f80394e6aa0a397fb319e5a29/FLAGbace0406c [2021-01-06 21:08:31,896 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 21:08:31,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2021-01-06 21:08:31,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/887e827e5/e6698e8f80394e6aa0a397fb319e5a29/FLAGbace0406c [2021-01-06 21:08:32,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/887e827e5/e6698e8f80394e6aa0a397fb319e5a29 [2021-01-06 21:08:32,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 21:08:32,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 21:08:32,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 21:08:32,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 21:08:32,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 21:08:32,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f95063d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32, skipping insertion in model container [2021-01-06 21:08:32,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 21:08:32,332 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13301~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13434~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2021-01-06 21:08:32,613 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6290,6303] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13526~0,GLOBAL] [2021-01-06 21:08:32,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 21:08:32,683 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13301~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13434~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2021-01-06 21:08:32,768 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6290,6303] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13526~0,GLOBAL] [2021-01-06 21:08:32,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 21:08:32,828 INFO L208 MainTranslator]: Completed translation [2021-01-06 21:08:32,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32 WrapperNode [2021-01-06 21:08:32,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 21:08:32,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 21:08:32,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 21:08:32,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 21:08:32,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 21:08:32,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 21:08:32,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 21:08:32,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 21:08:32,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (1/1) ... [2021-01-06 21:08:32,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 21:08:32,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 21:08:32,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 21:08:32,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 21:08:32,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 21:08:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 21:08:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 21:08:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 21:08:33,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 21:08:34,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 21:08:34,194 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 21:08:34,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 09:08:34 BoogieIcfgContainer [2021-01-06 21:08:34,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 21:08:34,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 21:08:34,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 21:08:34,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 21:08:34,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 09:08:32" (1/3) ... [2021-01-06 21:08:34,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc5a0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 09:08:34, skipping insertion in model container [2021-01-06 21:08:34,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:08:32" (2/3) ... [2021-01-06 21:08:34,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc5a0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 09:08:34, skipping insertion in model container [2021-01-06 21:08:34,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 09:08:34" (3/3) ... [2021-01-06 21:08:34,206 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2021-01-06 21:08:34,214 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 21:08:34,220 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 21:08:34,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 21:08:34,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 21:08:34,275 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 21:08:34,275 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 21:08:34,275 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 21:08:34,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 21:08:34,276 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 21:08:34,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 21:08:34,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 21:08:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2021-01-06 21:08:34,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 21:08:34,308 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:34,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:34,309 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:34,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:34,317 INFO L82 PathProgramCache]: Analyzing trace with hash -866113193, now seen corresponding path program 1 times [2021-01-06 21:08:34,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:34,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243746443] [2021-01-06 21:08:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:34,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243746443] [2021-01-06 21:08:34,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:34,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:08:34,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179708420] [2021-01-06 21:08:34,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:08:34,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:34,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:08:34,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:34,866 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 3 states. [2021-01-06 21:08:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:34,954 INFO L93 Difference]: Finished difference Result 254 states and 416 transitions. [2021-01-06 21:08:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:08:34,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-01-06 21:08:34,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:35,025 INFO L225 Difference]: With dead ends: 254 [2021-01-06 21:08:35,026 INFO L226 Difference]: Without dead ends: 175 [2021-01-06 21:08:35,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:35,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-06 21:08:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2021-01-06 21:08:35,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2021-01-06 21:08:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 250 transitions. [2021-01-06 21:08:35,150 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 250 transitions. Word has length 72 [2021-01-06 21:08:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:35,151 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 250 transitions. [2021-01-06 21:08:35,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:08:35,152 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 250 transitions. [2021-01-06 21:08:35,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 21:08:35,156 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:35,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:35,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 21:08:35,161 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:35,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:35,162 INFO L82 PathProgramCache]: Analyzing trace with hash -566031041, now seen corresponding path program 1 times [2021-01-06 21:08:35,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:35,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886442724] [2021-01-06 21:08:35,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:35,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886442724] [2021-01-06 21:08:35,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:35,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:08:35,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331627321] [2021-01-06 21:08:35,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:08:35,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:35,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:08:35,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:35,424 INFO L87 Difference]: Start difference. First operand 173 states and 250 transitions. Second operand 3 states. [2021-01-06 21:08:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:35,506 INFO L93 Difference]: Finished difference Result 417 states and 638 transitions. [2021-01-06 21:08:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:08:35,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2021-01-06 21:08:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:35,512 INFO L225 Difference]: With dead ends: 417 [2021-01-06 21:08:35,515 INFO L226 Difference]: Without dead ends: 287 [2021-01-06 21:08:35,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-01-06 21:08:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2021-01-06 21:08:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2021-01-06 21:08:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 428 transitions. [2021-01-06 21:08:35,591 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 428 transitions. Word has length 73 [2021-01-06 21:08:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:35,591 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 428 transitions. [2021-01-06 21:08:35,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:08:35,591 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 428 transitions. [2021-01-06 21:08:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 21:08:35,593 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:35,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:35,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 21:08:35,595 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:35,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:35,598 INFO L82 PathProgramCache]: Analyzing trace with hash -739923133, now seen corresponding path program 1 times [2021-01-06 21:08:35,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:35,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033451161] [2021-01-06 21:08:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:35,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033451161] [2021-01-06 21:08:35,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:35,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:08:35,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345189263] [2021-01-06 21:08:35,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:08:35,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:35,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:08:35,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:35,765 INFO L87 Difference]: Start difference. First operand 285 states and 428 transitions. Second operand 3 states. [2021-01-06 21:08:35,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:35,837 INFO L93 Difference]: Finished difference Result 737 states and 1146 transitions. [2021-01-06 21:08:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:08:35,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2021-01-06 21:08:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:35,845 INFO L225 Difference]: With dead ends: 737 [2021-01-06 21:08:35,846 INFO L226 Difference]: Without dead ends: 495 [2021-01-06 21:08:35,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-01-06 21:08:35,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2021-01-06 21:08:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2021-01-06 21:08:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 756 transitions. [2021-01-06 21:08:35,893 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 756 transitions. Word has length 74 [2021-01-06 21:08:35,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:35,894 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 756 transitions. [2021-01-06 21:08:35,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:08:35,894 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 756 transitions. [2021-01-06 21:08:35,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 21:08:35,896 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:35,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:35,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 21:08:35,897 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:35,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:35,897 INFO L82 PathProgramCache]: Analyzing trace with hash 330068461, now seen corresponding path program 1 times [2021-01-06 21:08:35,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:35,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433184017] [2021-01-06 21:08:35,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:36,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433184017] [2021-01-06 21:08:36,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:36,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:08:36,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236122022] [2021-01-06 21:08:36,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:08:36,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:36,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:08:36,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:36,041 INFO L87 Difference]: Start difference. First operand 493 states and 756 transitions. Second operand 3 states. [2021-01-06 21:08:36,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:36,113 INFO L93 Difference]: Finished difference Result 1329 states and 2078 transitions. [2021-01-06 21:08:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:08:36,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2021-01-06 21:08:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:36,121 INFO L225 Difference]: With dead ends: 1329 [2021-01-06 21:08:36,121 INFO L226 Difference]: Without dead ends: 879 [2021-01-06 21:08:36,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2021-01-06 21:08:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2021-01-06 21:08:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2021-01-06 21:08:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1356 transitions. [2021-01-06 21:08:36,192 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1356 transitions. Word has length 75 [2021-01-06 21:08:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:36,193 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1356 transitions. [2021-01-06 21:08:36,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:08:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1356 transitions. [2021-01-06 21:08:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 21:08:36,195 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:36,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:36,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 21:08:36,196 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash -298149753, now seen corresponding path program 1 times [2021-01-06 21:08:36,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:36,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493765315] [2021-01-06 21:08:36,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:36,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493765315] [2021-01-06 21:08:36,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:36,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:08:36,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046479077] [2021-01-06 21:08:36,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:08:36,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:36,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:08:36,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:36,302 INFO L87 Difference]: Start difference. First operand 877 states and 1356 transitions. Second operand 3 states. [2021-01-06 21:08:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:36,416 INFO L93 Difference]: Finished difference Result 2417 states and 3774 transitions. [2021-01-06 21:08:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:08:36,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-01-06 21:08:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:36,428 INFO L225 Difference]: With dead ends: 2417 [2021-01-06 21:08:36,429 INFO L226 Difference]: Without dead ends: 1583 [2021-01-06 21:08:36,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:36,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-01-06 21:08:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1581. [2021-01-06 21:08:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2021-01-06 21:08:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2444 transitions. [2021-01-06 21:08:36,537 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2444 transitions. Word has length 76 [2021-01-06 21:08:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:36,538 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 2444 transitions. [2021-01-06 21:08:36,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:08:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2444 transitions. [2021-01-06 21:08:36,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-06 21:08:36,540 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:36,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:36,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 21:08:36,540 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:36,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:36,541 INFO L82 PathProgramCache]: Analyzing trace with hash -2012894605, now seen corresponding path program 1 times [2021-01-06 21:08:36,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:36,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50770014] [2021-01-06 21:08:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:36,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50770014] [2021-01-06 21:08:36,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:36,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:08:36,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129184507] [2021-01-06 21:08:36,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:08:36,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:36,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:08:36,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:36,709 INFO L87 Difference]: Start difference. First operand 1581 states and 2444 transitions. Second operand 3 states. [2021-01-06 21:08:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:36,922 INFO L93 Difference]: Finished difference Result 4401 states and 6830 transitions. [2021-01-06 21:08:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:08:36,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-01-06 21:08:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:36,940 INFO L225 Difference]: With dead ends: 4401 [2021-01-06 21:08:36,940 INFO L226 Difference]: Without dead ends: 2863 [2021-01-06 21:08:36,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:36,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2021-01-06 21:08:37,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2861. [2021-01-06 21:08:37,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2861 states. [2021-01-06 21:08:37,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4396 transitions. [2021-01-06 21:08:37,137 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4396 transitions. Word has length 77 [2021-01-06 21:08:37,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:37,138 INFO L481 AbstractCegarLoop]: Abstraction has 2861 states and 4396 transitions. [2021-01-06 21:08:37,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:08:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4396 transitions. [2021-01-06 21:08:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 21:08:37,143 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:37,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:37,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 21:08:37,144 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:37,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:37,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1910583587, now seen corresponding path program 1 times [2021-01-06 21:08:37,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:37,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567254407] [2021-01-06 21:08:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:37,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567254407] [2021-01-06 21:08:37,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:37,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 21:08:37,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699480949] [2021-01-06 21:08:37,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 21:08:37,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:37,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 21:08:37,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 21:08:37,387 INFO L87 Difference]: Start difference. First operand 2861 states and 4396 transitions. Second operand 6 states. [2021-01-06 21:08:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:38,090 INFO L93 Difference]: Finished difference Result 8465 states and 13038 transitions. [2021-01-06 21:08:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 21:08:38,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2021-01-06 21:08:38,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:38,123 INFO L225 Difference]: With dead ends: 8465 [2021-01-06 21:08:38,123 INFO L226 Difference]: Without dead ends: 5647 [2021-01-06 21:08:38,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:08:38,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2021-01-06 21:08:38,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 5645. [2021-01-06 21:08:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5645 states. [2021-01-06 21:08:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 8652 transitions. [2021-01-06 21:08:38,632 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 8652 transitions. Word has length 78 [2021-01-06 21:08:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:38,632 INFO L481 AbstractCegarLoop]: Abstraction has 5645 states and 8652 transitions. [2021-01-06 21:08:38,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 21:08:38,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 8652 transitions. [2021-01-06 21:08:38,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 21:08:38,634 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:38,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:38,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 21:08:38,635 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:38,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:38,635 INFO L82 PathProgramCache]: Analyzing trace with hash -663052834, now seen corresponding path program 1 times [2021-01-06 21:08:38,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:38,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794631369] [2021-01-06 21:08:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:38,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794631369] [2021-01-06 21:08:38,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:38,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 21:08:38,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836760510] [2021-01-06 21:08:38,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 21:08:38,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:38,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 21:08:38,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 21:08:38,740 INFO L87 Difference]: Start difference. First operand 5645 states and 8652 transitions. Second operand 6 states. [2021-01-06 21:08:39,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:39,745 INFO L93 Difference]: Finished difference Result 16785 states and 25742 transitions. [2021-01-06 21:08:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 21:08:39,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2021-01-06 21:08:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:39,809 INFO L225 Difference]: With dead ends: 16785 [2021-01-06 21:08:39,809 INFO L226 Difference]: Without dead ends: 11183 [2021-01-06 21:08:39,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:08:39,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2021-01-06 21:08:40,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 11181. [2021-01-06 21:08:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2021-01-06 21:08:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 17068 transitions. [2021-01-06 21:08:40,768 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 17068 transitions. Word has length 78 [2021-01-06 21:08:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:40,769 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 17068 transitions. [2021-01-06 21:08:40,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 21:08:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 17068 transitions. [2021-01-06 21:08:40,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 21:08:40,770 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:40,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:40,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 21:08:40,771 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:40,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1789883929, now seen corresponding path program 1 times [2021-01-06 21:08:40,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:40,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370291860] [2021-01-06 21:08:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:40,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370291860] [2021-01-06 21:08:40,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:40,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 21:08:40,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5091898] [2021-01-06 21:08:40,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 21:08:40,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:40,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 21:08:40,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:08:40,897 INFO L87 Difference]: Start difference. First operand 11181 states and 17068 transitions. Second operand 5 states. [2021-01-06 21:08:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:41,817 INFO L93 Difference]: Finished difference Result 22319 states and 34093 transitions. [2021-01-06 21:08:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 21:08:41,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2021-01-06 21:08:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:41,876 INFO L225 Difference]: With dead ends: 22319 [2021-01-06 21:08:41,876 INFO L226 Difference]: Without dead ends: 11181 [2021-01-06 21:08:41,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 21:08:41,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11181 states. [2021-01-06 21:08:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11181 to 11181. [2021-01-06 21:08:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2021-01-06 21:08:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 16940 transitions. [2021-01-06 21:08:42,803 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 16940 transitions. Word has length 78 [2021-01-06 21:08:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:42,803 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 16940 transitions. [2021-01-06 21:08:42,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 21:08:42,803 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 16940 transitions. [2021-01-06 21:08:42,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 21:08:42,804 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:42,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:42,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 21:08:42,805 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:42,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:42,806 INFO L82 PathProgramCache]: Analyzing trace with hash 325812372, now seen corresponding path program 1 times [2021-01-06 21:08:42,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:42,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298095131] [2021-01-06 21:08:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:42,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298095131] [2021-01-06 21:08:42,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:42,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:08:42,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521750698] [2021-01-06 21:08:42,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:08:42,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:42,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:08:42,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:08:42,986 INFO L87 Difference]: Start difference. First operand 11181 states and 16940 transitions. Second operand 8 states. [2021-01-06 21:08:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:50,789 INFO L93 Difference]: Finished difference Result 133699 states and 202807 transitions. [2021-01-06 21:08:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 21:08:50,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2021-01-06 21:08:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:51,314 INFO L225 Difference]: With dead ends: 133699 [2021-01-06 21:08:51,315 INFO L226 Difference]: Without dead ends: 122561 [2021-01-06 21:08:51,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-01-06 21:08:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122561 states. [2021-01-06 21:08:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122561 to 22317. [2021-01-06 21:08:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22317 states. [2021-01-06 21:08:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22317 states to 22317 states and 33324 transitions. [2021-01-06 21:08:55,450 INFO L78 Accepts]: Start accepts. Automaton has 22317 states and 33324 transitions. Word has length 78 [2021-01-06 21:08:55,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:55,450 INFO L481 AbstractCegarLoop]: Abstraction has 22317 states and 33324 transitions. [2021-01-06 21:08:55,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:08:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 22317 states and 33324 transitions. [2021-01-06 21:08:55,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 21:08:55,451 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:55,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:55,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 21:08:55,452 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:55,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1348742768, now seen corresponding path program 1 times [2021-01-06 21:08:55,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:55,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847685782] [2021-01-06 21:08:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:08:55,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847685782] [2021-01-06 21:08:55,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:55,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:08:55,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115675748] [2021-01-06 21:08:55,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:08:55,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:55,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:08:55,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:55,522 INFO L87 Difference]: Start difference. First operand 22317 states and 33324 transitions. Second operand 3 states. [2021-01-06 21:08:58,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:58,315 INFO L93 Difference]: Finished difference Result 50003 states and 74576 transitions. [2021-01-06 21:08:58,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:08:58,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-01-06 21:08:58,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:58,377 INFO L225 Difference]: With dead ends: 50003 [2021-01-06 21:08:58,377 INFO L226 Difference]: Without dead ends: 27729 [2021-01-06 21:08:58,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:08:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27729 states. [2021-01-06 21:09:00,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27729 to 27727. [2021-01-06 21:09:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2021-01-06 21:09:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 41102 transitions. [2021-01-06 21:09:01,004 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 41102 transitions. Word has length 80 [2021-01-06 21:09:01,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:09:01,004 INFO L481 AbstractCegarLoop]: Abstraction has 27727 states and 41102 transitions. [2021-01-06 21:09:01,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:09:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 41102 transitions. [2021-01-06 21:09:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 21:09:01,005 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:09:01,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:09:01,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 21:09:01,006 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:09:01,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:09:01,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1327740113, now seen corresponding path program 1 times [2021-01-06 21:09:01,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:09:01,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898820896] [2021-01-06 21:09:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:09:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:09:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:09:01,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898820896] [2021-01-06 21:09:01,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:09:01,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:09:01,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510466755] [2021-01-06 21:09:01,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:09:01,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:09:01,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:09:01,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:09:01,436 INFO L87 Difference]: Start difference. First operand 27727 states and 41102 transitions. Second operand 8 states. [2021-01-06 21:09:05,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:09:05,314 INFO L93 Difference]: Finished difference Result 69221 states and 102945 transitions. [2021-01-06 21:09:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 21:09:05,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2021-01-06 21:09:05,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:09:05,384 INFO L225 Difference]: With dead ends: 69221 [2021-01-06 21:09:05,384 INFO L226 Difference]: Without dead ends: 41539 [2021-01-06 21:09:05,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-01-06 21:09:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41539 states. [2021-01-06 21:09:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41539 to 27727. [2021-01-06 21:09:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2021-01-06 21:09:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 40782 transitions. [2021-01-06 21:09:08,130 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 40782 transitions. Word has length 80 [2021-01-06 21:09:08,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:09:08,130 INFO L481 AbstractCegarLoop]: Abstraction has 27727 states and 40782 transitions. [2021-01-06 21:09:08,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:09:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 40782 transitions. [2021-01-06 21:09:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-06 21:09:08,131 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:09:08,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:09:08,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 21:09:08,131 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:09:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:09:08,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1787820142, now seen corresponding path program 1 times [2021-01-06 21:09:08,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:09:08,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464649634] [2021-01-06 21:09:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:09:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:09:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:09:08,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464649634] [2021-01-06 21:09:08,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:09:08,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 21:09:08,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776019134] [2021-01-06 21:09:08,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 21:09:08,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:09:08,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 21:09:08,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:09:08,219 INFO L87 Difference]: Start difference. First operand 27727 states and 40782 transitions. Second operand 5 states. [2021-01-06 21:09:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:09:12,967 INFO L93 Difference]: Finished difference Result 52725 states and 77208 transitions. [2021-01-06 21:09:12,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 21:09:12,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2021-01-06 21:09:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:09:13,053 INFO L225 Difference]: With dead ends: 52725 [2021-01-06 21:09:13,053 INFO L226 Difference]: Without dead ends: 52723 [2021-01-06 21:09:13,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 21:09:13,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52723 states. [2021-01-06 21:09:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52723 to 28751. [2021-01-06 21:09:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28751 states. [2021-01-06 21:09:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28751 states to 28751 states and 41742 transitions. [2021-01-06 21:09:16,135 INFO L78 Accepts]: Start accepts. Automaton has 28751 states and 41742 transitions. Word has length 81 [2021-01-06 21:09:16,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:09:16,135 INFO L481 AbstractCegarLoop]: Abstraction has 28751 states and 41742 transitions. [2021-01-06 21:09:16,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 21:09:16,136 INFO L276 IsEmpty]: Start isEmpty. Operand 28751 states and 41742 transitions. [2021-01-06 21:09:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 21:09:16,147 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:09:16,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:09:16,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 21:09:16,148 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:09:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:09:16,148 INFO L82 PathProgramCache]: Analyzing trace with hash 333029362, now seen corresponding path program 1 times [2021-01-06 21:09:16,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:09:16,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851691138] [2021-01-06 21:09:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:09:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:09:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 21:09:16,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851691138] [2021-01-06 21:09:16,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:09:16,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:09:16,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427627894] [2021-01-06 21:09:16,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:09:16,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:09:16,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:09:16,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:09:16,512 INFO L87 Difference]: Start difference. First operand 28751 states and 41742 transitions. Second operand 8 states. [2021-01-06 21:09:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:09:34,856 INFO L93 Difference]: Finished difference Result 204557 states and 297029 transitions. [2021-01-06 21:09:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 21:09:34,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2021-01-06 21:09:34,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:09:35,299 INFO L225 Difference]: With dead ends: 204557 [2021-01-06 21:09:35,300 INFO L226 Difference]: Without dead ends: 181259 [2021-01-06 21:09:35,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-01-06 21:09:35,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181259 states. [2021-01-06 21:09:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181259 to 54783. [2021-01-06 21:09:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54783 states. [2021-01-06 21:09:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54783 states to 54783 states and 79294 transitions. [2021-01-06 21:09:43,004 INFO L78 Accepts]: Start accepts. Automaton has 54783 states and 79294 transitions. Word has length 111 [2021-01-06 21:09:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:09:43,005 INFO L481 AbstractCegarLoop]: Abstraction has 54783 states and 79294 transitions. [2021-01-06 21:09:43,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:09:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 54783 states and 79294 transitions. [2021-01-06 21:09:43,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 21:09:43,017 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:09:43,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:09:43,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 21:09:43,018 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:09:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:09:43,018 INFO L82 PathProgramCache]: Analyzing trace with hash -317771784, now seen corresponding path program 1 times [2021-01-06 21:09:43,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:09:43,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216345509] [2021-01-06 21:09:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:09:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:09:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 21:09:43,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216345509] [2021-01-06 21:09:43,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:09:43,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:09:43,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150930704] [2021-01-06 21:09:43,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:09:43,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:09:43,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:09:43,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:09:43,196 INFO L87 Difference]: Start difference. First operand 54783 states and 79294 transitions. Second operand 8 states. [2021-01-06 21:10:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:10:07,519 INFO L93 Difference]: Finished difference Result 233261 states and 338469 transitions. [2021-01-06 21:10:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 21:10:07,525 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2021-01-06 21:10:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:10:08,021 INFO L225 Difference]: With dead ends: 233261 [2021-01-06 21:10:08,021 INFO L226 Difference]: Without dead ends: 204555 [2021-01-06 21:10:08,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-01-06 21:10:08,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204555 states. [2021-01-06 21:10:21,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204555 to 95135. [2021-01-06 21:10:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95135 states. [2021-01-06 21:10:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95135 states to 95135 states and 137310 transitions. [2021-01-06 21:10:21,418 INFO L78 Accepts]: Start accepts. Automaton has 95135 states and 137310 transitions. Word has length 111 [2021-01-06 21:10:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:10:21,419 INFO L481 AbstractCegarLoop]: Abstraction has 95135 states and 137310 transitions. [2021-01-06 21:10:21,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:10:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 95135 states and 137310 transitions. [2021-01-06 21:10:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 21:10:21,433 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:10:21,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:10:21,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 21:10:21,433 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:10:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:10:21,434 INFO L82 PathProgramCache]: Analyzing trace with hash 2001758078, now seen corresponding path program 1 times [2021-01-06 21:10:21,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:10:21,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031086283] [2021-01-06 21:10:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:10:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:10:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 21:10:21,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031086283] [2021-01-06 21:10:21,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:10:21,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:10:21,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188582787] [2021-01-06 21:10:21,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:10:21,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:10:21,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:10:21,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:10:21,677 INFO L87 Difference]: Start difference. First operand 95135 states and 137310 transitions. Second operand 8 states. [2021-01-06 21:10:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:10:52,196 INFO L93 Difference]: Finished difference Result 261965 states and 379845 transitions. [2021-01-06 21:10:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 21:10:52,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2021-01-06 21:10:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:10:52,651 INFO L225 Difference]: With dead ends: 261965 [2021-01-06 21:10:52,651 INFO L226 Difference]: Without dead ends: 233259 [2021-01-06 21:10:52,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-01-06 21:10:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233259 states. [2021-01-06 21:11:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233259 to 123839. [2021-01-06 21:11:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123839 states. [2021-01-06 21:11:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123839 states to 123839 states and 178686 transitions. [2021-01-06 21:11:11,066 INFO L78 Accepts]: Start accepts. Automaton has 123839 states and 178686 transitions. Word has length 111 [2021-01-06 21:11:11,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:11:11,066 INFO L481 AbstractCegarLoop]: Abstraction has 123839 states and 178686 transitions. [2021-01-06 21:11:11,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:11:11,066 INFO L276 IsEmpty]: Start isEmpty. Operand 123839 states and 178686 transitions. [2021-01-06 21:11:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 21:11:11,339 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:11:11,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:11:11,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 21:11:11,340 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:11:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:11:11,340 INFO L82 PathProgramCache]: Analyzing trace with hash 277216016, now seen corresponding path program 1 times [2021-01-06 21:11:11,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:11:11,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515563621] [2021-01-06 21:11:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:11:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:11:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-06 21:11:11,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515563621] [2021-01-06 21:11:11,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:11:11,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:11:11,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969256495] [2021-01-06 21:11:11,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:11:11,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:11:11,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:11:11,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:11:11,542 INFO L87 Difference]: Start difference. First operand 123839 states and 178686 transitions. Second operand 8 states. [2021-01-06 21:11:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:11:50,192 INFO L93 Difference]: Finished difference Result 290669 states and 421221 transitions. [2021-01-06 21:11:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 21:11:50,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2021-01-06 21:11:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:11:50,699 INFO L225 Difference]: With dead ends: 290669 [2021-01-06 21:11:50,699 INFO L226 Difference]: Without dead ends: 261963 [2021-01-06 21:11:50,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-01-06 21:11:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261963 states. [2021-01-06 21:12:14,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261963 to 152543. [2021-01-06 21:12:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152543 states. [2021-01-06 21:12:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152543 states to 152543 states and 220062 transitions. [2021-01-06 21:12:14,871 INFO L78 Accepts]: Start accepts. Automaton has 152543 states and 220062 transitions. Word has length 111 [2021-01-06 21:12:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:12:14,872 INFO L481 AbstractCegarLoop]: Abstraction has 152543 states and 220062 transitions. [2021-01-06 21:12:14,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:12:14,872 INFO L276 IsEmpty]: Start isEmpty. Operand 152543 states and 220062 transitions. [2021-01-06 21:12:14,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 21:12:14,888 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:12:14,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:12:14,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 21:12:14,891 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:12:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:12:14,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1431162122, now seen corresponding path program 1 times [2021-01-06 21:12:14,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:12:14,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781072663] [2021-01-06 21:12:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:12:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:12:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-06 21:12:15,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781072663] [2021-01-06 21:12:15,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:12:15,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:12:15,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950520144] [2021-01-06 21:12:15,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:12:15,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:12:15,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:12:15,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:12:15,359 INFO L87 Difference]: Start difference. First operand 152543 states and 220062 transitions. Second operand 8 states.