/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-dcfa08f [2020-12-23 11:16:27,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:16:27,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:16:27,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:16:27,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:16:27,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:16:27,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:16:27,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:16:27,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:16:27,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:16:27,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:16:27,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:16:27,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:16:27,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:16:28,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:16:28,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:16:28,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:16:28,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:16:28,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:16:28,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:16:28,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:16:28,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:16:28,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:16:28,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:16:28,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 11:16:28,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 11:16:28,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 11:16:28,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 11:16:28,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 11:16:28,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 11:16:28,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:16:28,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:16:28,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:16:28,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:16:28,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:16:28,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:16:28,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:16:28,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:16:28,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:16:28,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:16:28,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:16:28,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 11:16:28,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:16:28,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:16:28,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:16:28,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:16:28,097 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:16:28,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:16:28,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:16:28,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:16:28,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:16:28,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:16:28,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:16:28,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:16:28,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:16:28,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:16:28,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:16:28,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:16:28,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:16:28,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:16:28,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:16:28,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:16:28,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:16:28,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:16:28,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:16:28,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:16:28,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:16:28,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:16:28,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:16:28,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:16:28,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:16:28,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:16:28,585 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:16:28,586 INFO L432 ainManager$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 [2020-12-23 11:16:28,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fc9c14d82/8df8f32b66d443ec89a17f55ffc876af/FLAG1835aff10 [2020-12-23 11:16:29,352 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:16:29,353 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 [2020-12-23 11:16:29,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fc9c14d82/8df8f32b66d443ec89a17f55ffc876af/FLAG1835aff10 [2020-12-23 11:16:29,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fc9c14d82/8df8f32b66d443ec89a17f55ffc876af [2020-12-23 11:16:29,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:16:29,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:16:29,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:16:29,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:16:29,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:16:29,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:16:29" (1/1) ... [2020-12-23 11:16:29,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38caa21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:29, skipping insertion in model container [2020-12-23 11:16:29,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:16:29" (1/1) ... [2020-12-23 11:16:29,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:16:29,707 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,] [2020-12-23 11:16:29,955 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] [2020-12-23 11:16:29,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:16:30,017 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,] [2020-12-23 11:16:30,139 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] [2020-12-23 11:16:30,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:16:30,226 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:16:30,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30 WrapperNode [2020-12-23 11:16:30,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:16:30,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:16:30,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:16:30,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:16:30,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (1/1) ... [2020-12-23 11:16:30,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (1/1) ... [2020-12-23 11:16:30,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:16:30,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:16:30,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:16:30,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:16:30,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (1/1) ... [2020-12-23 11:16:30,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (1/1) ... [2020-12-23 11:16:30,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (1/1) ... [2020-12-23 11:16:30,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (1/1) ... [2020-12-23 11:16:30,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (1/1) ... [2020-12-23 11:16:30,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (1/1) ... [2020-12-23 11:16:30,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (1/1) ... [2020-12-23 11:16:30,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:16:30,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:16:30,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:16:30,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:16:30,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:16:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:16:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:16:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:16:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:16:31,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:16:31,377 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:16:31,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:16:31 BoogieIcfgContainer [2020-12-23 11:16:31,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:16:31,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:16:31,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:16:31,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:16:31,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:16:29" (1/3) ... [2020-12-23 11:16:31,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6026f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:16:31, skipping insertion in model container [2020-12-23 11:16:31,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:16:30" (2/3) ... [2020-12-23 11:16:31,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6026f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:16:31, skipping insertion in model container [2020-12-23 11:16:31,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:16:31" (3/3) ... [2020-12-23 11:16:31,389 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-23 11:16:31,395 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:16:31,401 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:16:31,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:16:31,449 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:16:31,449 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:16:31,449 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:16:31,449 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:16:31,449 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:16:31,450 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:16:31,450 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:16:31,450 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:16:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-12-23 11:16:31,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 11:16:31,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:31,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:16:31,481 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:31,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:31,488 INFO L82 PathProgramCache]: Analyzing trace with hash -866113193, now seen corresponding path program 1 times [2020-12-23 11:16:31,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:31,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900937456] [2020-12-23 11:16:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:32,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900937456] [2020-12-23 11:16:32,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:32,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:16:32,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087834905] [2020-12-23 11:16:32,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:16:32,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:32,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:16:32,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:32,025 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 3 states. [2020-12-23 11:16:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:32,105 INFO L93 Difference]: Finished difference Result 254 states and 416 transitions. [2020-12-23 11:16:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:16:32,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 11:16:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:32,122 INFO L225 Difference]: With dead ends: 254 [2020-12-23 11:16:32,122 INFO L226 Difference]: Without dead ends: 175 [2020-12-23 11:16:32,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-23 11:16:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-12-23 11:16:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-23 11:16:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 250 transitions. [2020-12-23 11:16:32,197 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 250 transitions. Word has length 72 [2020-12-23 11:16:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:32,197 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 250 transitions. [2020-12-23 11:16:32,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:16:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 250 transitions. [2020-12-23 11:16:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:16:32,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:32,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:16:32,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:16:32,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:32,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:32,203 INFO L82 PathProgramCache]: Analyzing trace with hash -566031041, now seen corresponding path program 1 times [2020-12-23 11:16:32,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:32,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419431151] [2020-12-23 11:16:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:32,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419431151] [2020-12-23 11:16:32,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:32,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:16:32,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935493238] [2020-12-23 11:16:32,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:16:32,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:32,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:16:32,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:32,375 INFO L87 Difference]: Start difference. First operand 173 states and 250 transitions. Second operand 3 states. [2020-12-23 11:16:32,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:32,429 INFO L93 Difference]: Finished difference Result 417 states and 638 transitions. [2020-12-23 11:16:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:16:32,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 11:16:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:32,433 INFO L225 Difference]: With dead ends: 417 [2020-12-23 11:16:32,434 INFO L226 Difference]: Without dead ends: 287 [2020-12-23 11:16:32,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:32,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-23 11:16:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2020-12-23 11:16:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-12-23 11:16:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 428 transitions. [2020-12-23 11:16:32,482 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 428 transitions. Word has length 73 [2020-12-23 11:16:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:32,482 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 428 transitions. [2020-12-23 11:16:32,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:16:32,483 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 428 transitions. [2020-12-23 11:16:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 11:16:32,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:32,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:16:32,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:16:32,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash -739923133, now seen corresponding path program 1 times [2020-12-23 11:16:32,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:32,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73714983] [2020-12-23 11:16:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:32,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73714983] [2020-12-23 11:16:32,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:32,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:16:32,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180681278] [2020-12-23 11:16:32,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:16:32,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:32,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:16:32,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:32,648 INFO L87 Difference]: Start difference. First operand 285 states and 428 transitions. Second operand 3 states. [2020-12-23 11:16:32,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:32,742 INFO L93 Difference]: Finished difference Result 737 states and 1146 transitions. [2020-12-23 11:16:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:16:32,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 11:16:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:32,753 INFO L225 Difference]: With dead ends: 737 [2020-12-23 11:16:32,754 INFO L226 Difference]: Without dead ends: 495 [2020-12-23 11:16:32,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-12-23 11:16:32,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2020-12-23 11:16:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-12-23 11:16:32,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 756 transitions. [2020-12-23 11:16:32,847 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 756 transitions. Word has length 74 [2020-12-23 11:16:32,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:32,851 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 756 transitions. [2020-12-23 11:16:32,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:16:32,851 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 756 transitions. [2020-12-23 11:16:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 11:16:32,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:32,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:16:32,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:16:32,856 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:32,857 INFO L82 PathProgramCache]: Analyzing trace with hash 330068461, now seen corresponding path program 1 times [2020-12-23 11:16:32,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:32,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957040871] [2020-12-23 11:16:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:32,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957040871] [2020-12-23 11:16:32,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:32,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:16:32,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437750146] [2020-12-23 11:16:32,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:16:32,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:32,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:16:32,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:32,991 INFO L87 Difference]: Start difference. First operand 493 states and 756 transitions. Second operand 3 states. [2020-12-23 11:16:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:33,058 INFO L93 Difference]: Finished difference Result 1329 states and 2078 transitions. [2020-12-23 11:16:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:16:33,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 11:16:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:33,065 INFO L225 Difference]: With dead ends: 1329 [2020-12-23 11:16:33,065 INFO L226 Difference]: Without dead ends: 879 [2020-12-23 11:16:33,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-12-23 11:16:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2020-12-23 11:16:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-12-23 11:16:33,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1356 transitions. [2020-12-23 11:16:33,118 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1356 transitions. Word has length 75 [2020-12-23 11:16:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:33,119 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1356 transitions. [2020-12-23 11:16:33,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:16:33,119 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1356 transitions. [2020-12-23 11:16:33,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 11:16:33,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:33,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:16:33,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:16:33,122 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:33,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:33,142 INFO L82 PathProgramCache]: Analyzing trace with hash -298149753, now seen corresponding path program 1 times [2020-12-23 11:16:33,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:33,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55923922] [2020-12-23 11:16:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:33,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55923922] [2020-12-23 11:16:33,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:33,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:16:33,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888640079] [2020-12-23 11:16:33,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:16:33,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:33,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:16:33,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:33,234 INFO L87 Difference]: Start difference. First operand 877 states and 1356 transitions. Second operand 3 states. [2020-12-23 11:16:33,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:33,332 INFO L93 Difference]: Finished difference Result 2417 states and 3774 transitions. [2020-12-23 11:16:33,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:16:33,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 11:16:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:33,347 INFO L225 Difference]: With dead ends: 2417 [2020-12-23 11:16:33,348 INFO L226 Difference]: Without dead ends: 1583 [2020-12-23 11:16:33,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:33,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-12-23 11:16:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1581. [2020-12-23 11:16:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-12-23 11:16:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2444 transitions. [2020-12-23 11:16:33,452 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2444 transitions. Word has length 76 [2020-12-23 11:16:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:33,454 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 2444 transitions. [2020-12-23 11:16:33,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:16:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2444 transitions. [2020-12-23 11:16:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 11:16:33,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:33,459 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] [2020-12-23 11:16:33,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:16:33,460 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:33,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2012894605, now seen corresponding path program 1 times [2020-12-23 11:16:33,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:33,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520062377] [2020-12-23 11:16:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:33,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520062377] [2020-12-23 11:16:33,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:33,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:16:33,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229710116] [2020-12-23 11:16:33,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:16:33,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:33,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:16:33,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:33,608 INFO L87 Difference]: Start difference. First operand 1581 states and 2444 transitions. Second operand 3 states. [2020-12-23 11:16:33,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:33,820 INFO L93 Difference]: Finished difference Result 4401 states and 6830 transitions. [2020-12-23 11:16:33,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:16:33,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 11:16:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:33,836 INFO L225 Difference]: With dead ends: 4401 [2020-12-23 11:16:33,836 INFO L226 Difference]: Without dead ends: 2863 [2020-12-23 11:16:33,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2020-12-23 11:16:34,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2861. [2020-12-23 11:16:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2861 states. [2020-12-23 11:16:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4396 transitions. [2020-12-23 11:16:34,027 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4396 transitions. Word has length 77 [2020-12-23 11:16:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:34,028 INFO L481 AbstractCegarLoop]: Abstraction has 2861 states and 4396 transitions. [2020-12-23 11:16:34,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:16:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4396 transitions. [2020-12-23 11:16:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:16:34,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:34,038 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] [2020-12-23 11:16:34,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:16:34,039 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:34,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1910583587, now seen corresponding path program 1 times [2020-12-23 11:16:34,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:34,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424080727] [2020-12-23 11:16:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:34,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424080727] [2020-12-23 11:16:34,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:34,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:16:34,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363541425] [2020-12-23 11:16:34,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:16:34,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:34,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:16:34,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:16:34,253 INFO L87 Difference]: Start difference. First operand 2861 states and 4396 transitions. Second operand 6 states. [2020-12-23 11:16:34,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:34,877 INFO L93 Difference]: Finished difference Result 8465 states and 13038 transitions. [2020-12-23 11:16:34,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:16:34,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 11:16:34,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:34,910 INFO L225 Difference]: With dead ends: 8465 [2020-12-23 11:16:34,911 INFO L226 Difference]: Without dead ends: 5647 [2020-12-23 11:16:34,917 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 [2020-12-23 11:16:34,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2020-12-23 11:16:35,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 5645. [2020-12-23 11:16:35,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5645 states. [2020-12-23 11:16:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 8652 transitions. [2020-12-23 11:16:35,389 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 8652 transitions. Word has length 78 [2020-12-23 11:16:35,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:35,390 INFO L481 AbstractCegarLoop]: Abstraction has 5645 states and 8652 transitions. [2020-12-23 11:16:35,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:16:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 8652 transitions. [2020-12-23 11:16:35,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:16:35,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:35,394 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] [2020-12-23 11:16:35,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:16:35,394 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:35,395 INFO L82 PathProgramCache]: Analyzing trace with hash -663052834, now seen corresponding path program 1 times [2020-12-23 11:16:35,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:35,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338476230] [2020-12-23 11:16:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:35,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338476230] [2020-12-23 11:16:35,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:35,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:16:35,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395030233] [2020-12-23 11:16:35,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:16:35,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:35,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:16:35,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:16:35,505 INFO L87 Difference]: Start difference. First operand 5645 states and 8652 transitions. Second operand 6 states. [2020-12-23 11:16:36,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:36,465 INFO L93 Difference]: Finished difference Result 16785 states and 25742 transitions. [2020-12-23 11:16:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:16:36,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 11:16:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:36,527 INFO L225 Difference]: With dead ends: 16785 [2020-12-23 11:16:36,527 INFO L226 Difference]: Without dead ends: 11183 [2020-12-23 11:16:36,539 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 [2020-12-23 11:16:36,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2020-12-23 11:16:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 11181. [2020-12-23 11:16:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2020-12-23 11:16:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 17068 transitions. [2020-12-23 11:16:37,521 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 17068 transitions. Word has length 78 [2020-12-23 11:16:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:37,522 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 17068 transitions. [2020-12-23 11:16:37,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:16:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 17068 transitions. [2020-12-23 11:16:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:16:37,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:37,523 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] [2020-12-23 11:16:37,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:16:37,524 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:37,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1789883929, now seen corresponding path program 1 times [2020-12-23 11:16:37,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:37,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737010316] [2020-12-23 11:16:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:37,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737010316] [2020-12-23 11:16:37,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:37,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:16:37,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851946882] [2020-12-23 11:16:37,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:16:37,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:37,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:16:37,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:16:37,600 INFO L87 Difference]: Start difference. First operand 11181 states and 17068 transitions. Second operand 5 states. [2020-12-23 11:16:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:38,452 INFO L93 Difference]: Finished difference Result 22319 states and 34093 transitions. [2020-12-23 11:16:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:16:38,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-23 11:16:38,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:38,509 INFO L225 Difference]: With dead ends: 22319 [2020-12-23 11:16:38,509 INFO L226 Difference]: Without dead ends: 11181 [2020-12-23 11:16:38,527 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 [2020-12-23 11:16:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11181 states. [2020-12-23 11:16:39,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11181 to 11181. [2020-12-23 11:16:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2020-12-23 11:16:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 16940 transitions. [2020-12-23 11:16:39,448 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 16940 transitions. Word has length 78 [2020-12-23 11:16:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:39,449 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 16940 transitions. [2020-12-23 11:16:39,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:16:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 16940 transitions. [2020-12-23 11:16:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:16:39,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:39,450 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] [2020-12-23 11:16:39,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:16:39,451 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:39,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:39,452 INFO L82 PathProgramCache]: Analyzing trace with hash 325812372, now seen corresponding path program 1 times [2020-12-23 11:16:39,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:39,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734947569] [2020-12-23 11:16:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:39,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734947569] [2020-12-23 11:16:39,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:39,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:16:39,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746794709] [2020-12-23 11:16:39,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:16:39,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:39,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:16:39,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:16:39,648 INFO L87 Difference]: Start difference. First operand 11181 states and 16940 transitions. Second operand 8 states. [2020-12-23 11:16:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:46,279 INFO L93 Difference]: Finished difference Result 133699 states and 202807 transitions. [2020-12-23 11:16:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 11:16:46,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-23 11:16:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:46,643 INFO L225 Difference]: With dead ends: 133699 [2020-12-23 11:16:46,643 INFO L226 Difference]: Without dead ends: 122561 [2020-12-23 11:16:46,713 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 [2020-12-23 11:16:46,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122561 states. [2020-12-23 11:16:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122561 to 22317. [2020-12-23 11:16:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22317 states. [2020-12-23 11:16:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22317 states to 22317 states and 33324 transitions. [2020-12-23 11:16:50,284 INFO L78 Accepts]: Start accepts. Automaton has 22317 states and 33324 transitions. Word has length 78 [2020-12-23 11:16:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:50,285 INFO L481 AbstractCegarLoop]: Abstraction has 22317 states and 33324 transitions. [2020-12-23 11:16:50,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:16:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 22317 states and 33324 transitions. [2020-12-23 11:16:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 11:16:50,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:50,286 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] [2020-12-23 11:16:50,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:16:50,286 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:50,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1348742768, now seen corresponding path program 1 times [2020-12-23 11:16:50,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:50,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917454234] [2020-12-23 11:16:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:50,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917454234] [2020-12-23 11:16:50,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:50,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:16:50,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509686777] [2020-12-23 11:16:50,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:16:50,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:50,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:16:50,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:50,350 INFO L87 Difference]: Start difference. First operand 22317 states and 33324 transitions. Second operand 3 states. [2020-12-23 11:16:52,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:52,619 INFO L93 Difference]: Finished difference Result 50003 states and 74576 transitions. [2020-12-23 11:16:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:16:52,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-23 11:16:52,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:52,662 INFO L225 Difference]: With dead ends: 50003 [2020-12-23 11:16:52,662 INFO L226 Difference]: Without dead ends: 27729 [2020-12-23 11:16:52,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:16:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27729 states. [2020-12-23 11:16:54,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27729 to 27727. [2020-12-23 11:16:54,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2020-12-23 11:16:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 41102 transitions. [2020-12-23 11:16:54,966 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 41102 transitions. Word has length 80 [2020-12-23 11:16:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:54,966 INFO L481 AbstractCegarLoop]: Abstraction has 27727 states and 41102 transitions. [2020-12-23 11:16:54,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:16:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 41102 transitions. [2020-12-23 11:16:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 11:16:54,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:54,967 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] [2020-12-23 11:16:54,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:16:54,967 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:54,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:54,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1327740113, now seen corresponding path program 1 times [2020-12-23 11:16:54,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:54,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400784345] [2020-12-23 11:16:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:16:55,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400784345] [2020-12-23 11:16:55,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:55,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:16:55,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22433761] [2020-12-23 11:16:55,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:16:55,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:55,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:16:55,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:16:55,264 INFO L87 Difference]: Start difference. First operand 27727 states and 41102 transitions. Second operand 8 states. [2020-12-23 11:16:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:58,647 INFO L93 Difference]: Finished difference Result 69221 states and 102945 transitions. [2020-12-23 11:16:58,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:16:58,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-23 11:16:58,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:58,723 INFO L225 Difference]: With dead ends: 69221 [2020-12-23 11:16:58,724 INFO L226 Difference]: Without dead ends: 41539 [2020-12-23 11:16:58,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2020-12-23 11:16:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41539 states. [2020-12-23 11:17:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41539 to 27727. [2020-12-23 11:17:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2020-12-23 11:17:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 40782 transitions. [2020-12-23 11:17:01,432 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 40782 transitions. Word has length 80 [2020-12-23 11:17:01,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:01,432 INFO L481 AbstractCegarLoop]: Abstraction has 27727 states and 40782 transitions. [2020-12-23 11:17:01,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:17:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 40782 transitions. [2020-12-23 11:17:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 11:17:01,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:01,433 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] [2020-12-23 11:17:01,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:17:01,434 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:01,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:01,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1787820142, now seen corresponding path program 1 times [2020-12-23 11:17:01,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:01,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388523580] [2020-12-23 11:17:01,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:17:01,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388523580] [2020-12-23 11:17:01,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:01,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:17:01,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440340616] [2020-12-23 11:17:01,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:17:01,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:01,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:17:01,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:17:01,519 INFO L87 Difference]: Start difference. First operand 27727 states and 40782 transitions. Second operand 5 states. [2020-12-23 11:17:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:06,055 INFO L93 Difference]: Finished difference Result 52725 states and 77208 transitions. [2020-12-23 11:17:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:17:06,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-23 11:17:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:06,139 INFO L225 Difference]: With dead ends: 52725 [2020-12-23 11:17:06,139 INFO L226 Difference]: Without dead ends: 52723 [2020-12-23 11:17:06,156 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 [2020-12-23 11:17:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52723 states. [2020-12-23 11:17:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52723 to 28751. [2020-12-23 11:17:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28751 states. [2020-12-23 11:17:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28751 states to 28751 states and 41742 transitions. [2020-12-23 11:17:09,073 INFO L78 Accepts]: Start accepts. Automaton has 28751 states and 41742 transitions. Word has length 81 [2020-12-23 11:17:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:09,073 INFO L481 AbstractCegarLoop]: Abstraction has 28751 states and 41742 transitions. [2020-12-23 11:17:09,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:17:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 28751 states and 41742 transitions. [2020-12-23 11:17:09,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 11:17:09,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:09,083 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] [2020-12-23 11:17:09,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:17:09,084 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:09,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:09,084 INFO L82 PathProgramCache]: Analyzing trace with hash 333029362, now seen corresponding path program 1 times [2020-12-23 11:17:09,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:09,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267613398] [2020-12-23 11:17:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 11:17:09,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267613398] [2020-12-23 11:17:09,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:09,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:17:09,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53611096] [2020-12-23 11:17:09,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:17:09,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:09,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:17:09,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:17:09,272 INFO L87 Difference]: Start difference. First operand 28751 states and 41742 transitions. Second operand 8 states. [2020-12-23 11:17:26,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:26,264 INFO L93 Difference]: Finished difference Result 204557 states and 297029 transitions. [2020-12-23 11:17:26,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:17:26,265 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-23 11:17:26,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:26,568 INFO L225 Difference]: With dead ends: 204557 [2020-12-23 11:17:26,569 INFO L226 Difference]: Without dead ends: 181259 [2020-12-23 11:17:26,718 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 [2020-12-23 11:17:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181259 states. [2020-12-23 11:17:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181259 to 54783. [2020-12-23 11:17:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54783 states. [2020-12-23 11:17:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54783 states to 54783 states and 79294 transitions. [2020-12-23 11:17:33,705 INFO L78 Accepts]: Start accepts. Automaton has 54783 states and 79294 transitions. Word has length 111 [2020-12-23 11:17:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:33,705 INFO L481 AbstractCegarLoop]: Abstraction has 54783 states and 79294 transitions. [2020-12-23 11:17:33,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:17:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 54783 states and 79294 transitions. [2020-12-23 11:17:33,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 11:17:33,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:33,717 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] [2020-12-23 11:17:33,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:17:33,717 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:33,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:33,718 INFO L82 PathProgramCache]: Analyzing trace with hash -317771784, now seen corresponding path program 1 times [2020-12-23 11:17:33,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:33,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825628064] [2020-12-23 11:17:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 11:17:33,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825628064] [2020-12-23 11:17:33,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:33,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:17:33,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457083004] [2020-12-23 11:17:33,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:17:33,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:33,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:17:33,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:17:33,879 INFO L87 Difference]: Start difference. First operand 54783 states and 79294 transitions. Second operand 8 states. [2020-12-23 11:17:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:56,937 INFO L93 Difference]: Finished difference Result 233261 states and 338469 transitions. [2020-12-23 11:17:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:17:57,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-23 11:17:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:57,360 INFO L225 Difference]: With dead ends: 233261 [2020-12-23 11:17:57,361 INFO L226 Difference]: Without dead ends: 204555 [2020-12-23 11:17:57,435 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 [2020-12-23 11:17:57,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204555 states. [2020-12-23 11:18:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204555 to 95135. [2020-12-23 11:18:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95135 states. [2020-12-23 11:18:09,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95135 states to 95135 states and 137310 transitions. [2020-12-23 11:18:09,958 INFO L78 Accepts]: Start accepts. Automaton has 95135 states and 137310 transitions. Word has length 111 [2020-12-23 11:18:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:18:09,959 INFO L481 AbstractCegarLoop]: Abstraction has 95135 states and 137310 transitions. [2020-12-23 11:18:09,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:18:09,959 INFO L276 IsEmpty]: Start isEmpty. Operand 95135 states and 137310 transitions. [2020-12-23 11:18:09,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 11:18:09,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:18:09,973 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] [2020-12-23 11:18:09,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:18:09,974 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:18:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:18:09,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2001758078, now seen corresponding path program 1 times [2020-12-23 11:18:09,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:18:09,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917412701] [2020-12-23 11:18:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:18:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:18:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 11:18:10,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917412701] [2020-12-23 11:18:10,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:18:10,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:18:10,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023554902] [2020-12-23 11:18:10,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:18:10,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:18:10,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:18:10,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:18:10,154 INFO L87 Difference]: Start difference. First operand 95135 states and 137310 transitions. Second operand 8 states. [2020-12-23 11:18:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:18:38,927 INFO L93 Difference]: Finished difference Result 261965 states and 379845 transitions. [2020-12-23 11:18:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:18:38,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-23 11:18:38,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:18:39,470 INFO L225 Difference]: With dead ends: 261965 [2020-12-23 11:18:39,471 INFO L226 Difference]: Without dead ends: 233259 [2020-12-23 11:18:39,563 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 [2020-12-23 11:18:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233259 states. [2020-12-23 11:18:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233259 to 123839. [2020-12-23 11:18:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123839 states. [2020-12-23 11:18:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123839 states to 123839 states and 178686 transitions. [2020-12-23 11:18:56,613 INFO L78 Accepts]: Start accepts. Automaton has 123839 states and 178686 transitions. Word has length 111 [2020-12-23 11:18:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:18:56,613 INFO L481 AbstractCegarLoop]: Abstraction has 123839 states and 178686 transitions. [2020-12-23 11:18:56,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:18:56,613 INFO L276 IsEmpty]: Start isEmpty. Operand 123839 states and 178686 transitions. [2020-12-23 11:18:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 11:18:56,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:18:56,627 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] [2020-12-23 11:18:56,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:18:56,628 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:18:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:18:56,628 INFO L82 PathProgramCache]: Analyzing trace with hash 277216016, now seen corresponding path program 1 times [2020-12-23 11:18:56,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:18:56,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317246985] [2020-12-23 11:18:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:18:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:18:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 11:18:57,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317246985] [2020-12-23 11:18:57,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:18:57,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:18:57,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106387462] [2020-12-23 11:18:57,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:18:57,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:18:57,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:18:57,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:18:57,055 INFO L87 Difference]: Start difference. First operand 123839 states and 178686 transitions. Second operand 8 states. [2020-12-23 11:19:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:19:33,517 INFO L93 Difference]: Finished difference Result 290669 states and 421221 transitions. [2020-12-23 11:19:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:19:33,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-23 11:19:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:19:34,100 INFO L225 Difference]: With dead ends: 290669 [2020-12-23 11:19:34,100 INFO L226 Difference]: Without dead ends: 261963 [2020-12-23 11:19:34,170 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 [2020-12-23 11:19:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261963 states. [2020-12-23 11:19:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261963 to 152543. [2020-12-23 11:19:56,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152543 states. [2020-12-23 11:19:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152543 states to 152543 states and 220062 transitions. [2020-12-23 11:19:56,741 INFO L78 Accepts]: Start accepts. Automaton has 152543 states and 220062 transitions. Word has length 111 [2020-12-23 11:19:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:19:56,741 INFO L481 AbstractCegarLoop]: Abstraction has 152543 states and 220062 transitions. [2020-12-23 11:19:56,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:19:56,741 INFO L276 IsEmpty]: Start isEmpty. Operand 152543 states and 220062 transitions. [2020-12-23 11:19:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 11:19:56,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:19:56,756 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] [2020-12-23 11:19:56,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 11:19:56,756 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:19:56,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:19:56,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1431162122, now seen corresponding path program 1 times [2020-12-23 11:19:56,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:19:56,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073017604] [2020-12-23 11:19:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:19:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:19:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 11:19:56,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073017604] [2020-12-23 11:19:56,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:19:56,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:19:56,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325603377] [2020-12-23 11:19:56,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:19:56,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:19:56,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:19:56,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:19:56,918 INFO L87 Difference]: Start difference. First operand 152543 states and 220062 transitions. Second operand 8 states.