/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.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 11:21:13,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:21:13,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:21:13,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:21:13,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:21:13,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:21:13,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:21:13,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:21:13,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:21:13,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:21:13,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:21:13,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:21:13,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:21:13,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:21:13,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:21:13,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:21:13,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:21:13,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:21:13,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:21:13,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:21:13,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:21:13,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:21:13,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:21:13,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:21:13,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 11:21:13,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 11:21:13,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 11:21:13,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 11:21:13,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 11:21:13,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 11:21:13,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:21:13,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:21:13,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:21:13,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:21:13,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:21:13,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:21:13,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:21:13,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:21:13,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:21:13,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:21:13,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:21:13,598 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 11:21:13,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:21:13,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:21:13,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:21:13,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:21:13,658 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:21:13,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:21:13,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:21:13,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:21:13,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:21:13,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:21:13,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:21:13,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:21:13,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:21:13,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:21:13,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:21:13,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:21:13,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:21:13,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:21:13,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:21:13,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:21:13,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:21:13,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:21:13,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:21:13,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:21:13,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:21:13,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:21:14,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:21:14,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:21:14,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:21:14,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:21:14,168 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:21:14,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-12-23 11:21:14,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1460c8057/e231caa00384420c919e46bd624178ba/FLAG590b72f7c [2020-12-23 11:21:14,844 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:21:14,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-12-23 11:21:14,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1460c8057/e231caa00384420c919e46bd624178ba/FLAG590b72f7c [2020-12-23 11:21:15,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1460c8057/e231caa00384420c919e46bd624178ba [2020-12-23 11:21:15,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:21:15,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:21:15,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:21:15,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:21:15,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:21:15,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730d9e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15, skipping insertion in model container [2020-12-23 11:21:15,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:21:15,240 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[~id7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_28553~0,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[~p7_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p7_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[~p7_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[~node7__m7~0,] left hand side expression in assignment: lhs: VariableLHS[~node7__m7~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode7~0,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[~p7_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p7_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_28705~0,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 11:21:15,489 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.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7227,7240] 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[~st7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node7____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p7_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node7____CPAchecker_TMP_0~0,] 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_28809~0,GLOBAL] [2020-12-23 11:21:15,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:21:15,600 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[~id7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_28553~0,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[~p7_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p7_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[~p7_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[~node7__m7~0,] left hand side expression in assignment: lhs: VariableLHS[~node7__m7~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode7~0,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[~p7_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p7_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_28705~0,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 11:21:15,692 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.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7227,7240] 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[~st7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node7____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p7_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode7~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node7____CPAchecker_TMP_0~0,] 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_28809~0,GLOBAL] [2020-12-23 11:21:15,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:21:15,753 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:21:15,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15 WrapperNode [2020-12-23 11:21:15,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:21:15,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:21:15,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:21:15,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:21:15,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:21:15,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:21:15,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:21:15,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:21:15,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (1/1) ... [2020-12-23 11:21:15,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:21:15,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:21:15,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:21:15,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:21:15,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:21:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:21:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:21:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:21:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:21:16,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:21:16,930 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:21:16,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:21:16 BoogieIcfgContainer [2020-12-23 11:21:16,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:21:16,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:21:16,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:21:16,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:21:16,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:21:15" (1/3) ... [2020-12-23 11:21:16,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bded587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:21:16, skipping insertion in model container [2020-12-23 11:21:16,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:21:15" (2/3) ... [2020-12-23 11:21:16,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bded587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:21:16, skipping insertion in model container [2020-12-23 11:21:16,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:21:16" (3/3) ... [2020-12-23 11:21:16,958 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-12-23 11:21:16,969 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:21:16,975 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:21:16,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:21:17,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:21:17,024 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:21:17,024 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:21:17,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:21:17,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:21:17,024 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:21:17,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:21:17,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:21:17,045 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states. [2020-12-23 11:21:17,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-23 11:21:17,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:17,058 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, 1, 1, 1, 1, 1] [2020-12-23 11:21:17,059 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:17,066 INFO L82 PathProgramCache]: Analyzing trace with hash -313177950, now seen corresponding path program 1 times [2020-12-23 11:21:17,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:17,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603923628] [2020-12-23 11:21:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:17,577 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 11:21:17,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603923628] [2020-12-23 11:21:17,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:17,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:21:17,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5964811] [2020-12-23 11:21:17,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:21:17,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:17,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:21:17,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:21:17,614 INFO L87 Difference]: Start difference. First operand 136 states. Second operand 3 states. [2020-12-23 11:21:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:17,736 INFO L93 Difference]: Finished difference Result 294 states and 484 transitions. [2020-12-23 11:21:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:21:17,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-23 11:21:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:17,754 INFO L225 Difference]: With dead ends: 294 [2020-12-23 11:21:17,754 INFO L226 Difference]: Without dead ends: 205 [2020-12-23 11:21:17,758 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 11:21:17,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-23 11:21:17,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-12-23 11:21:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-23 11:21:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 292 transitions. [2020-12-23 11:21:17,823 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 292 transitions. Word has length 86 [2020-12-23 11:21:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:17,824 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 292 transitions. [2020-12-23 11:21:17,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:21:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 292 transitions. [2020-12-23 11:21:17,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-23 11:21:17,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:17,831 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, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:17,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:21:17,832 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:17,833 INFO L82 PathProgramCache]: Analyzing trace with hash 982762601, now seen corresponding path program 1 times [2020-12-23 11:21:17,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:17,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477804598] [2020-12-23 11:21:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:18,022 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 11:21:18,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477804598] [2020-12-23 11:21:18,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:18,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:21:18,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115098844] [2020-12-23 11:21:18,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:21:18,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:18,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:21:18,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:21:18,027 INFO L87 Difference]: Start difference. First operand 203 states and 292 transitions. Second operand 3 states. [2020-12-23 11:21:18,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:18,122 INFO L93 Difference]: Finished difference Result 487 states and 744 transitions. [2020-12-23 11:21:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:21:18,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-23 11:21:18,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:18,132 INFO L225 Difference]: With dead ends: 487 [2020-12-23 11:21:18,132 INFO L226 Difference]: Without dead ends: 337 [2020-12-23 11:21:18,137 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 11:21:18,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-12-23 11:21:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2020-12-23 11:21:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-12-23 11:21:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 502 transitions. [2020-12-23 11:21:18,197 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 502 transitions. Word has length 87 [2020-12-23 11:21:18,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:18,197 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 502 transitions. [2020-12-23 11:21:18,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:21:18,198 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 502 transitions. [2020-12-23 11:21:18,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-23 11:21:18,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:18,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:18,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:21:18,202 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:18,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:18,203 INFO L82 PathProgramCache]: Analyzing trace with hash 914543768, now seen corresponding path program 1 times [2020-12-23 11:21:18,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:18,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661767158] [2020-12-23 11:21:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:18,390 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 11:21:18,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661767158] [2020-12-23 11:21:18,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:18,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:21:18,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479196524] [2020-12-23 11:21:18,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:21:18,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:18,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:21:18,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:21:18,395 INFO L87 Difference]: Start difference. First operand 335 states and 502 transitions. Second operand 3 states. [2020-12-23 11:21:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:18,493 INFO L93 Difference]: Finished difference Result 867 states and 1348 transitions. [2020-12-23 11:21:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:21:18,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-23 11:21:18,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:18,503 INFO L225 Difference]: With dead ends: 867 [2020-12-23 11:21:18,503 INFO L226 Difference]: Without dead ends: 585 [2020-12-23 11:21:18,509 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 11:21:18,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-12-23 11:21:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 583. [2020-12-23 11:21:18,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-12-23 11:21:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 894 transitions. [2020-12-23 11:21:18,596 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 894 transitions. Word has length 88 [2020-12-23 11:21:18,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:18,597 INFO L481 AbstractCegarLoop]: Abstraction has 583 states and 894 transitions. [2020-12-23 11:21:18,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:21:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 894 transitions. [2020-12-23 11:21:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-23 11:21:18,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:18,607 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:18,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:21:18,608 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:18,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:18,609 INFO L82 PathProgramCache]: Analyzing trace with hash 349801040, now seen corresponding path program 1 times [2020-12-23 11:21:18,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:18,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138931811] [2020-12-23 11:21:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:18,813 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 11:21:18,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138931811] [2020-12-23 11:21:18,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:18,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:21:18,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981984545] [2020-12-23 11:21:18,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:21:18,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:18,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:21:18,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:21:18,820 INFO L87 Difference]: Start difference. First operand 583 states and 894 transitions. Second operand 3 states. [2020-12-23 11:21:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:18,892 INFO L93 Difference]: Finished difference Result 1579 states and 2472 transitions. [2020-12-23 11:21:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:21:18,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-23 11:21:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:18,904 INFO L225 Difference]: With dead ends: 1579 [2020-12-23 11:21:18,904 INFO L226 Difference]: Without dead ends: 1049 [2020-12-23 11:21:18,909 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 11:21:18,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-12-23 11:21:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1047. [2020-12-23 11:21:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-12-23 11:21:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1622 transitions. [2020-12-23 11:21:18,983 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1622 transitions. Word has length 89 [2020-12-23 11:21:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:18,985 INFO L481 AbstractCegarLoop]: Abstraction has 1047 states and 1622 transitions. [2020-12-23 11:21:18,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:21:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1622 transitions. [2020-12-23 11:21:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-23 11:21:18,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:18,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:18,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:21:18,991 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:18,992 INFO L82 PathProgramCache]: Analyzing trace with hash -248220501, now seen corresponding path program 1 times [2020-12-23 11:21:18,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:18,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573451900] [2020-12-23 11:21:18,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:19,138 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 11:21:19,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573451900] [2020-12-23 11:21:19,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:19,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:21:19,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430990875] [2020-12-23 11:21:19,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:21:19,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:19,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:21:19,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:21:19,144 INFO L87 Difference]: Start difference. First operand 1047 states and 1622 transitions. Second operand 3 states. [2020-12-23 11:21:19,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:19,257 INFO L93 Difference]: Finished difference Result 2907 states and 4552 transitions. [2020-12-23 11:21:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:21:19,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-23 11:21:19,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:19,272 INFO L225 Difference]: With dead ends: 2907 [2020-12-23 11:21:19,273 INFO L226 Difference]: Without dead ends: 1913 [2020-12-23 11:21:19,275 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 11:21:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2020-12-23 11:21:19,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1911. [2020-12-23 11:21:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1911 states. [2020-12-23 11:21:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2966 transitions. [2020-12-23 11:21:19,415 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2966 transitions. Word has length 90 [2020-12-23 11:21:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:19,417 INFO L481 AbstractCegarLoop]: Abstraction has 1911 states and 2966 transitions. [2020-12-23 11:21:19,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:21:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2966 transitions. [2020-12-23 11:21:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-23 11:21:19,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:19,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:19,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:21:19,422 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:19,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1910770737, now seen corresponding path program 1 times [2020-12-23 11:21:19,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:19,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953513827] [2020-12-23 11:21:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:19,531 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 11:21:19,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953513827] [2020-12-23 11:21:19,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:19,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:21:19,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508231654] [2020-12-23 11:21:19,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:21:19,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:19,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:21:19,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:21:19,536 INFO L87 Difference]: Start difference. First operand 1911 states and 2966 transitions. Second operand 3 states. [2020-12-23 11:21:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:19,765 INFO L93 Difference]: Finished difference Result 5371 states and 8376 transitions. [2020-12-23 11:21:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:21:19,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-23 11:21:19,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:19,786 INFO L225 Difference]: With dead ends: 5371 [2020-12-23 11:21:19,786 INFO L226 Difference]: Without dead ends: 3513 [2020-12-23 11:21:19,789 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 11:21:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3513 states. [2020-12-23 11:21:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3513 to 3511. [2020-12-23 11:21:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3511 states. [2020-12-23 11:21:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 5430 transitions. [2020-12-23 11:21:20,002 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 5430 transitions. Word has length 91 [2020-12-23 11:21:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:20,003 INFO L481 AbstractCegarLoop]: Abstraction has 3511 states and 5430 transitions. [2020-12-23 11:21:20,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:21:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 5430 transitions. [2020-12-23 11:21:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-23 11:21:20,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:20,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:20,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:21:20,006 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:20,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:20,007 INFO L82 PathProgramCache]: Analyzing trace with hash 307326139, now seen corresponding path program 1 times [2020-12-23 11:21:20,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:20,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124852724] [2020-12-23 11:21:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:20,142 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 11:21:20,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124852724] [2020-12-23 11:21:20,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:20,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:21:20,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865777539] [2020-12-23 11:21:20,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:21:20,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:20,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:21:20,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:21:20,145 INFO L87 Difference]: Start difference. First operand 3511 states and 5430 transitions. Second operand 3 states. [2020-12-23 11:21:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:20,559 INFO L93 Difference]: Finished difference Result 9915 states and 15352 transitions. [2020-12-23 11:21:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:21:20,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-23 11:21:20,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:20,597 INFO L225 Difference]: With dead ends: 9915 [2020-12-23 11:21:20,597 INFO L226 Difference]: Without dead ends: 6457 [2020-12-23 11:21:20,606 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 11:21:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2020-12-23 11:21:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 6455. [2020-12-23 11:21:21,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6455 states. [2020-12-23 11:21:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6455 states to 6455 states and 9910 transitions. [2020-12-23 11:21:21,051 INFO L78 Accepts]: Start accepts. Automaton has 6455 states and 9910 transitions. Word has length 92 [2020-12-23 11:21:21,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:21,052 INFO L481 AbstractCegarLoop]: Abstraction has 6455 states and 9910 transitions. [2020-12-23 11:21:21,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:21:21,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6455 states and 9910 transitions. [2020-12-23 11:21:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:21:21,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:21,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:21,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:21:21,054 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:21,055 INFO L82 PathProgramCache]: Analyzing trace with hash -450885343, now seen corresponding path program 1 times [2020-12-23 11:21:21,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:21,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751362397] [2020-12-23 11:21:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:21,219 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 11:21:21,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751362397] [2020-12-23 11:21:21,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:21,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:21:21,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115729691] [2020-12-23 11:21:21,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:21:21,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:21,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:21:21,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:21:21,222 INFO L87 Difference]: Start difference. First operand 6455 states and 9910 transitions. Second operand 6 states. [2020-12-23 11:21:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:22,239 INFO L93 Difference]: Finished difference Result 19195 states and 29496 transitions. [2020-12-23 11:21:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:21:22,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-23 11:21:22,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:22,324 INFO L225 Difference]: With dead ends: 19195 [2020-12-23 11:21:22,324 INFO L226 Difference]: Without dead ends: 12793 [2020-12-23 11:21:22,335 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 11:21:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12793 states. [2020-12-23 11:21:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12793 to 12791. [2020-12-23 11:21:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12791 states. [2020-12-23 11:21:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12791 states to 12791 states and 19574 transitions. [2020-12-23 11:21:23,260 INFO L78 Accepts]: Start accepts. Automaton has 12791 states and 19574 transitions. Word has length 93 [2020-12-23 11:21:23,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:23,260 INFO L481 AbstractCegarLoop]: Abstraction has 12791 states and 19574 transitions. [2020-12-23 11:21:23,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:21:23,260 INFO L276 IsEmpty]: Start isEmpty. Operand 12791 states and 19574 transitions. [2020-12-23 11:21:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:21:23,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:23,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:23,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:21:23,262 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:23,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:23,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1897914938, now seen corresponding path program 1 times [2020-12-23 11:21:23,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:23,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208050058] [2020-12-23 11:21:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:23,370 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 11:21:23,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208050058] [2020-12-23 11:21:23,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:23,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:21:23,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116240538] [2020-12-23 11:21:23,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:21:23,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:23,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:21:23,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:21:23,382 INFO L87 Difference]: Start difference. First operand 12791 states and 19574 transitions. Second operand 6 states. [2020-12-23 11:21:25,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:25,025 INFO L93 Difference]: Finished difference Result 38139 states and 58360 transitions. [2020-12-23 11:21:25,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:21:25,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-23 11:21:25,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:25,090 INFO L225 Difference]: With dead ends: 38139 [2020-12-23 11:21:25,090 INFO L226 Difference]: Without dead ends: 25401 [2020-12-23 11:21:25,116 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 11:21:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25401 states. [2020-12-23 11:21:26,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25401 to 25399. [2020-12-23 11:21:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25399 states. [2020-12-23 11:21:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25399 states to 25399 states and 38710 transitions. [2020-12-23 11:21:26,484 INFO L78 Accepts]: Start accepts. Automaton has 25399 states and 38710 transitions. Word has length 93 [2020-12-23 11:21:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:26,484 INFO L481 AbstractCegarLoop]: Abstraction has 25399 states and 38710 transitions. [2020-12-23 11:21:26,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:21:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 25399 states and 38710 transitions. [2020-12-23 11:21:26,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:21:26,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:26,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:26,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:21:26,486 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:26,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:26,487 INFO L82 PathProgramCache]: Analyzing trace with hash 932980801, now seen corresponding path program 1 times [2020-12-23 11:21:26,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:26,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315430105] [2020-12-23 11:21:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:26,595 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 11:21:26,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315430105] [2020-12-23 11:21:26,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:26,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:21:26,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652997801] [2020-12-23 11:21:26,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:21:26,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:26,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:21:26,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:21:26,598 INFO L87 Difference]: Start difference. First operand 25399 states and 38710 transitions. Second operand 6 states. [2020-12-23 11:21:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:29,089 INFO L93 Difference]: Finished difference Result 75835 states and 115512 transitions. [2020-12-23 11:21:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:21:29,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-23 11:21:29,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:29,218 INFO L225 Difference]: With dead ends: 75835 [2020-12-23 11:21:29,218 INFO L226 Difference]: Without dead ends: 50489 [2020-12-23 11:21:29,252 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 11:21:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50489 states. [2020-12-23 11:21:32,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50489 to 50487. [2020-12-23 11:21:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50487 states. [2020-12-23 11:21:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50487 states to 50487 states and 76598 transitions. [2020-12-23 11:21:32,133 INFO L78 Accepts]: Start accepts. Automaton has 50487 states and 76598 transitions. Word has length 93 [2020-12-23 11:21:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:32,134 INFO L481 AbstractCegarLoop]: Abstraction has 50487 states and 76598 transitions. [2020-12-23 11:21:32,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:21:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 50487 states and 76598 transitions. [2020-12-23 11:21:32,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:21:32,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:32,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:32,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:21:32,135 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:32,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2088118490, now seen corresponding path program 1 times [2020-12-23 11:21:32,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:32,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113250956] [2020-12-23 11:21:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:32,346 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-12-23 11:21:32,366 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 11:21:32,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113250956] [2020-12-23 11:21:32,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:32,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:21:32,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111791279] [2020-12-23 11:21:32,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:21:32,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:32,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:21:32,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:21:32,369 INFO L87 Difference]: Start difference. First operand 50487 states and 76598 transitions. Second operand 5 states. [2020-12-23 11:21:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:34,705 INFO L93 Difference]: Finished difference Result 100921 states and 153143 transitions. [2020-12-23 11:21:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:21:34,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-23 11:21:34,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:34,850 INFO L225 Difference]: With dead ends: 100921 [2020-12-23 11:21:34,851 INFO L226 Difference]: Without dead ends: 50487 [2020-12-23 11:21:34,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:21:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50487 states. [2020-12-23 11:21:37,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50487 to 50487. [2020-12-23 11:21:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50487 states. [2020-12-23 11:21:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50487 states to 50487 states and 76086 transitions. [2020-12-23 11:21:37,604 INFO L78 Accepts]: Start accepts. Automaton has 50487 states and 76086 transitions. Word has length 93 [2020-12-23 11:21:37,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:37,604 INFO L481 AbstractCegarLoop]: Abstraction has 50487 states and 76086 transitions. [2020-12-23 11:21:37,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:21:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 50487 states and 76086 transitions. [2020-12-23 11:21:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:21:37,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:37,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:37,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:21:37,606 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:37,606 INFO L82 PathProgramCache]: Analyzing trace with hash -760733301, now seen corresponding path program 1 times [2020-12-23 11:21:37,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:37,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51769527] [2020-12-23 11:21:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:37,691 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 11:21:37,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51769527] [2020-12-23 11:21:37,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:37,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:21:37,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084853898] [2020-12-23 11:21:37,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:21:37,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:37,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:21:37,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:21:37,694 INFO L87 Difference]: Start difference. First operand 50487 states and 76086 transitions. Second operand 5 states. [2020-12-23 11:21:40,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:40,600 INFO L93 Difference]: Finished difference Result 100921 states and 152119 transitions. [2020-12-23 11:21:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:21:40,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-23 11:21:40,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:40,671 INFO L225 Difference]: With dead ends: 100921 [2020-12-23 11:21:40,672 INFO L226 Difference]: Without dead ends: 50487 [2020-12-23 11:21:40,714 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 11:21:40,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50487 states. [2020-12-23 11:21:43,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50487 to 50487. [2020-12-23 11:21:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50487 states. [2020-12-23 11:21:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50487 states to 50487 states and 75574 transitions. [2020-12-23 11:21:43,902 INFO L78 Accepts]: Start accepts. Automaton has 50487 states and 75574 transitions. Word has length 93 [2020-12-23 11:21:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:43,903 INFO L481 AbstractCegarLoop]: Abstraction has 50487 states and 75574 transitions. [2020-12-23 11:21:43,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:21:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 50487 states and 75574 transitions. [2020-12-23 11:21:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:21:43,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:43,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:21:43,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:21:43,904 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:43,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:43,904 INFO L82 PathProgramCache]: Analyzing trace with hash 960597574, now seen corresponding path program 1 times [2020-12-23 11:21:43,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:43,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770500990] [2020-12-23 11:21:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:44,071 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 11:21:44,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770500990] [2020-12-23 11:21:44,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:44,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 11:21:44,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600730547] [2020-12-23 11:21:44,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 11:21:44,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:44,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 11:21:44,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-23 11:21:44,074 INFO L87 Difference]: Start difference. First operand 50487 states and 75574 transitions. Second operand 9 states. [2020-12-23 11:22:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:22:28,093 INFO L93 Difference]: Finished difference Result 756563 states and 1132868 transitions. [2020-12-23 11:22:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 11:22:28,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-23 11:22:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:22:29,395 INFO L225 Difference]: With dead ends: 756563 [2020-12-23 11:22:29,395 INFO L226 Difference]: Without dead ends: 706129 [2020-12-23 11:22:29,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-12-23 11:22:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706129 states. [2020-12-23 11:22:45,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706129 to 100919. [2020-12-23 11:22:45,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100919 states. [2020-12-23 11:22:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100919 states to 100919 states and 149046 transitions. [2020-12-23 11:22:45,933 INFO L78 Accepts]: Start accepts. Automaton has 100919 states and 149046 transitions. Word has length 93 [2020-12-23 11:22:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:22:45,933 INFO L481 AbstractCegarLoop]: Abstraction has 100919 states and 149046 transitions. [2020-12-23 11:22:45,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 11:22:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 100919 states and 149046 transitions. [2020-12-23 11:22:45,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-23 11:22:45,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:22:45,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:22:45,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:22:45,934 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:22:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:22:45,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1205518302, now seen corresponding path program 1 times [2020-12-23 11:22:45,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:22:45,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870706079] [2020-12-23 11:22:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:22:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:22:46,214 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 11:22:46,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870706079] [2020-12-23 11:22:46,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:22:46,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:22:46,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966909555] [2020-12-23 11:22:46,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:22:46,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:22:46,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:22:46,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:22:46,219 INFO L87 Difference]: Start difference. First operand 100919 states and 149046 transitions. Second operand 3 states. [2020-12-23 11:23:00,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:23:00,984 INFO L93 Difference]: Finished difference Result 254267 states and 374072 transitions. [2020-12-23 11:23:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:23:00,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-23 11:23:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:23:01,352 INFO L225 Difference]: With dead ends: 254267 [2020-12-23 11:23:01,353 INFO L226 Difference]: Without dead ends: 153401 [2020-12-23 11:23:01,441 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 11:23:01,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153401 states. [2020-12-23 11:23:17,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153401 to 153399. [2020-12-23 11:23:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153399 states. [2020-12-23 11:23:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153399 states to 153399 states and 222006 transitions. [2020-12-23 11:23:17,913 INFO L78 Accepts]: Start accepts. Automaton has 153399 states and 222006 transitions. Word has length 95 [2020-12-23 11:23:17,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:23:17,914 INFO L481 AbstractCegarLoop]: Abstraction has 153399 states and 222006 transitions. [2020-12-23 11:23:17,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:23:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 153399 states and 222006 transitions. [2020-12-23 11:23:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-23 11:23:17,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:23:17,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:23:17,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:23:17,927 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:23:17,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:23:17,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1184515647, now seen corresponding path program 1 times [2020-12-23 11:23:17,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:23:17,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68398348] [2020-12-23 11:23:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:23:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:23:18,405 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 11:23:18,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68398348] [2020-12-23 11:23:18,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:23:18,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 11:23:18,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335408062] [2020-12-23 11:23:18,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 11:23:18,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:23:18,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 11:23:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 11:23:18,409 INFO L87 Difference]: Start difference. First operand 153399 states and 222006 transitions. Second operand 9 states. [2020-12-23 11:23:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:23:44,896 INFO L93 Difference]: Finished difference Result 382909 states and 555193 transitions. [2020-12-23 11:23:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 11:23:44,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-12-23 11:23:44,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:23:45,460 INFO L225 Difference]: With dead ends: 382909 [2020-12-23 11:23:45,460 INFO L226 Difference]: Without dead ends: 229563 [2020-12-23 11:23:45,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-12-23 11:23:45,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229563 states. [2020-12-23 11:24:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229563 to 153399. [2020-12-23 11:24:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153399 states. [2020-12-23 11:24:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153399 states to 153399 states and 220982 transitions. [2020-12-23 11:24:06,881 INFO L78 Accepts]: Start accepts. Automaton has 153399 states and 220982 transitions. Word has length 95 [2020-12-23 11:24:06,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:24:06,883 INFO L481 AbstractCegarLoop]: Abstraction has 153399 states and 220982 transitions. [2020-12-23 11:24:06,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 11:24:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 153399 states and 220982 transitions. [2020-12-23 11:24:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 11:24:06,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:24:06,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:24:06,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:24:06,884 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:24:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:24:06,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1294211459, now seen corresponding path program 1 times [2020-12-23 11:24:06,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:24:06,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723742848] [2020-12-23 11:24:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:24:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:24:06,952 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 11:24:06,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723742848] [2020-12-23 11:24:06,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:24:06,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:24:06,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285992848] [2020-12-23 11:24:06,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:24:06,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:24:06,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:24:06,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:24:06,954 INFO L87 Difference]: Start difference. First operand 153399 states and 220982 transitions. Second operand 3 states.