/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.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 11:20:10,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:20:10,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:20:10,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:20:10,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:20:10,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:20:10,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:20:10,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:20:10,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:20:10,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:20:10,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:20:10,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:20:10,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:20:10,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:20:10,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:20:10,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:20:10,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:20:10,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:20:10,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:20:10,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:20:10,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:20:10,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:20:10,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:20:10,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:20:10,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 11:20:10,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 11:20:10,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 11:20:10,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 11:20:10,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 11:20:10,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 11:20:10,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:20:10,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:20:10,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:20:10,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:20:10,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:20:10,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:20:10,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:20:10,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:20:10,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:20:10,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:20:10,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:20:10,752 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 11:20:10,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:20:10,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:20:10,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:20:10,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:20:10,805 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:20:10,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:20:10,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:20:10,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:20:10,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:20:10,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:20:10,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:20:10,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:20:10,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:20:10,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:20:10,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:20:10,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:20:10,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:20:10,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:20:10,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:20:10,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:20:10,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:20:10,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:20:10,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:20:10,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:20:10,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:20:10,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:20:11,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:20:11,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:20:11,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:20:11,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:20:11,260 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:20:11,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:20:11,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8ee8971cb/11d0496c41ec457db2964cdd36764f38/FLAG2053fd49d [2020-12-23 11:20:12,082 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:20:12,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:20:12,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8ee8971cb/11d0496c41ec457db2964cdd36764f38/FLAG2053fd49d [2020-12-23 11:20:12,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8ee8971cb/11d0496c41ec457db2964cdd36764f38 [2020-12-23 11:20:12,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:20:12,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:20:12,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:20:12,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:20:12,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:20:12,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:20:12" (1/1) ... [2020-12-23 11:20:12,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349553eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:12, skipping insertion in model container [2020-12-23 11:20:12,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:20:12" (1/1) ... [2020-12-23 11:20:12,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:20:12,518 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_28361~0,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[~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_28513~0,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 11:20:12,842 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.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7265,7278] 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[~send1~0,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,] [2020-12-23 11:20:12,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:20:12,901 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_28361~0,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[~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_28513~0,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 11:20:12,985 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.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7265,7278] 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[~send1~0,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,] [2020-12-23 11:20:13,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:20:13,046 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:20:13,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13 WrapperNode [2020-12-23 11:20:13,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:20:13,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:20:13,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:20:13,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:20:13,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (1/1) ... [2020-12-23 11:20:13,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (1/1) ... [2020-12-23 11:20:13,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:20:13,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:20:13,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:20:13,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:20:13,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (1/1) ... [2020-12-23 11:20:13,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (1/1) ... [2020-12-23 11:20:13,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (1/1) ... [2020-12-23 11:20:13,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (1/1) ... [2020-12-23 11:20:13,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (1/1) ... [2020-12-23 11:20:13,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (1/1) ... [2020-12-23 11:20:13,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (1/1) ... [2020-12-23 11:20:13,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:20:13,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:20:13,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:20:13,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:20:13,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (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 11:20:13,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:20:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:20:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:20:13,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:20:14,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:20:14,361 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:20:14,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:20:14 BoogieIcfgContainer [2020-12-23 11:20:14,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:20:14,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:20:14,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:20:14,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:20:14,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:20:12" (1/3) ... [2020-12-23 11:20:14,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43880224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:20:14, skipping insertion in model container [2020-12-23 11:20:14,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:13" (2/3) ... [2020-12-23 11:20:14,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43880224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:20:14, skipping insertion in model container [2020-12-23 11:20:14,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:20:14" (3/3) ... [2020-12-23 11:20:14,374 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:20:14,381 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:20:14,389 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:20:14,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:20:14,445 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:20:14,445 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:20:14,446 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:20:14,446 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:20:14,446 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:20:14,446 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:20:14,446 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:20:14,447 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:20:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-12-23 11:20:14,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-23 11:20:14,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:14,485 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 11:20:14,485 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:14,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:14,492 INFO L82 PathProgramCache]: Analyzing trace with hash -2006546999, now seen corresponding path program 1 times [2020-12-23 11:20:14,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:14,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551743451] [2020-12-23 11:20:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:15,108 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 11:20:15,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551743451] [2020-12-23 11:20:15,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:15,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:20:15,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488268403] [2020-12-23 11:20:15,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:20:15,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:15,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:20:15,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:20:15,146 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-12-23 11:20:15,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:15,294 INFO L93 Difference]: Finished difference Result 300 states and 490 transitions. [2020-12-23 11:20:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:20:15,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-23 11:20:15,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:15,312 INFO L225 Difference]: With dead ends: 300 [2020-12-23 11:20:15,312 INFO L226 Difference]: Without dead ends: 209 [2020-12-23 11:20:15,316 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 11:20:15,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-23 11:20:15,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2020-12-23 11:20:15,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-12-23 11:20:15,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 298 transitions. [2020-12-23 11:20:15,389 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 298 transitions. Word has length 87 [2020-12-23 11:20:15,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:15,390 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 298 transitions. [2020-12-23 11:20:15,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:20:15,390 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 298 transitions. [2020-12-23 11:20:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-23 11:20:15,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:15,395 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 11:20:15,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:20:15,395 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:15,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1559740613, now seen corresponding path program 1 times [2020-12-23 11:20:15,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:15,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862668349] [2020-12-23 11:20:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:15,558 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 11:20:15,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862668349] [2020-12-23 11:20:15,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:15,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:20:15,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934077445] [2020-12-23 11:20:15,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:20:15,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:15,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:20:15,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:20:15,563 INFO L87 Difference]: Start difference. First operand 207 states and 298 transitions. Second operand 3 states. [2020-12-23 11:20:15,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:15,654 INFO L93 Difference]: Finished difference Result 499 states and 762 transitions. [2020-12-23 11:20:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:20:15,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-23 11:20:15,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:15,663 INFO L225 Difference]: With dead ends: 499 [2020-12-23 11:20:15,664 INFO L226 Difference]: Without dead ends: 345 [2020-12-23 11:20:15,670 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 11:20:15,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-12-23 11:20:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2020-12-23 11:20:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-12-23 11:20:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 514 transitions. [2020-12-23 11:20:15,732 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 514 transitions. Word has length 88 [2020-12-23 11:20:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:15,733 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 514 transitions. [2020-12-23 11:20:15,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:20:15,733 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 514 transitions. [2020-12-23 11:20:15,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-23 11:20:15,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:15,736 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 11:20:15,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:20:15,737 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:15,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:15,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1480148747, now seen corresponding path program 1 times [2020-12-23 11:20:15,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:15,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082524921] [2020-12-23 11:20:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:15,874 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 11:20:15,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082524921] [2020-12-23 11:20:15,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:15,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:20:15,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835707790] [2020-12-23 11:20:15,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:20:15,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:15,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:20:15,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:20:15,877 INFO L87 Difference]: Start difference. First operand 343 states and 514 transitions. Second operand 3 states. [2020-12-23 11:20:15,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:15,934 INFO L93 Difference]: Finished difference Result 891 states and 1384 transitions. [2020-12-23 11:20:15,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:20:15,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-23 11:20:15,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:15,940 INFO L225 Difference]: With dead ends: 891 [2020-12-23 11:20:15,940 INFO L226 Difference]: Without dead ends: 601 [2020-12-23 11:20:15,942 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 11:20:15,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-12-23 11:20:16,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2020-12-23 11:20:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-12-23 11:20:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 918 transitions. [2020-12-23 11:20:16,021 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 918 transitions. Word has length 89 [2020-12-23 11:20:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:16,024 INFO L481 AbstractCegarLoop]: Abstraction has 599 states and 918 transitions. [2020-12-23 11:20:16,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:20:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 918 transitions. [2020-12-23 11:20:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-23 11:20:16,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:16,034 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 11:20:16,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:20:16,034 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:16,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1142089047, now seen corresponding path program 1 times [2020-12-23 11:20:16,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:16,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714222950] [2020-12-23 11:20:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:20:16,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714222950] [2020-12-23 11:20:16,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:16,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:20:16,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415199290] [2020-12-23 11:20:16,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:20:16,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:16,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:20:16,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:20:16,239 INFO L87 Difference]: Start difference. First operand 599 states and 918 transitions. Second operand 3 states. [2020-12-23 11:20:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:16,317 INFO L93 Difference]: Finished difference Result 1627 states and 2544 transitions. [2020-12-23 11:20:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:20:16,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-23 11:20:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:16,329 INFO L225 Difference]: With dead ends: 1627 [2020-12-23 11:20:16,329 INFO L226 Difference]: Without dead ends: 1081 [2020-12-23 11:20:16,336 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 11:20:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-12-23 11:20:16,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1079. [2020-12-23 11:20:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-12-23 11:20:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1670 transitions. [2020-12-23 11:20:16,403 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1670 transitions. Word has length 90 [2020-12-23 11:20:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:16,406 INFO L481 AbstractCegarLoop]: Abstraction has 1079 states and 1670 transitions. [2020-12-23 11:20:16,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:20:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1670 transitions. [2020-12-23 11:20:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-23 11:20:16,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:16,414 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 11:20:16,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:20:16,415 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:16,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:16,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1309607801, now seen corresponding path program 1 times [2020-12-23 11:20:16,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:16,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567184626] [2020-12-23 11:20:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:16,559 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 11:20:16,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567184626] [2020-12-23 11:20:16,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:16,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:20:16,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358555965] [2020-12-23 11:20:16,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:20:16,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:16,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:20:16,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:20:16,564 INFO L87 Difference]: Start difference. First operand 1079 states and 1670 transitions. Second operand 3 states. [2020-12-23 11:20:16,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:16,686 INFO L93 Difference]: Finished difference Result 3003 states and 4696 transitions. [2020-12-23 11:20:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:20:16,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-23 11:20:16,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:16,698 INFO L225 Difference]: With dead ends: 3003 [2020-12-23 11:20:16,698 INFO L226 Difference]: Without dead ends: 1977 [2020-12-23 11:20:16,701 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 11:20:16,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2020-12-23 11:20:16,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1975. [2020-12-23 11:20:16,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-12-23 11:20:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3062 transitions. [2020-12-23 11:20:16,837 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3062 transitions. Word has length 91 [2020-12-23 11:20:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:16,837 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3062 transitions. [2020-12-23 11:20:16,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:20:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3062 transitions. [2020-12-23 11:20:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-23 11:20:16,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:16,846 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 11:20:16,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:20:16,847 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:16,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:16,848 INFO L82 PathProgramCache]: Analyzing trace with hash 582949359, now seen corresponding path program 1 times [2020-12-23 11:20:16,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:16,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560780969] [2020-12-23 11:20:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:16,945 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 11:20:16,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560780969] [2020-12-23 11:20:16,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:16,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:20:16,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389328713] [2020-12-23 11:20:16,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:20:16,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:16,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:20:16,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:20:16,950 INFO L87 Difference]: Start difference. First operand 1975 states and 3062 transitions. Second operand 3 states. [2020-12-23 11:20:17,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:17,162 INFO L93 Difference]: Finished difference Result 5563 states and 8664 transitions. [2020-12-23 11:20:17,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:20:17,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-23 11:20:17,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:17,182 INFO L225 Difference]: With dead ends: 5563 [2020-12-23 11:20:17,183 INFO L226 Difference]: Without dead ends: 3641 [2020-12-23 11:20:17,186 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 11:20:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2020-12-23 11:20:17,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2020-12-23 11:20:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2020-12-23 11:20:17,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5622 transitions. [2020-12-23 11:20:17,428 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5622 transitions. Word has length 92 [2020-12-23 11:20:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:17,429 INFO L481 AbstractCegarLoop]: Abstraction has 3639 states and 5622 transitions. [2020-12-23 11:20:17,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:20:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5622 transitions. [2020-12-23 11:20:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:20:17,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:17,432 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 11:20:17,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:20:17,433 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash -496500112, now seen corresponding path program 1 times [2020-12-23 11:20:17,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:17,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916458753] [2020-12-23 11:20:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:17,595 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 11:20:17,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916458753] [2020-12-23 11:20:17,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:17,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:20:17,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969020191] [2020-12-23 11:20:17,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:20:17,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:17,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:20:17,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:20:17,601 INFO L87 Difference]: Start difference. First operand 3639 states and 5622 transitions. Second operand 5 states. [2020-12-23 11:20:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:18,072 INFO L93 Difference]: Finished difference Result 7225 states and 11191 transitions. [2020-12-23 11:20:18,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:20:18,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-23 11:20:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:18,092 INFO L225 Difference]: With dead ends: 7225 [2020-12-23 11:20:18,092 INFO L226 Difference]: Without dead ends: 3639 [2020-12-23 11:20:18,101 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 11:20:18,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2020-12-23 11:20:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3639. [2020-12-23 11:20:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2020-12-23 11:20:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5590 transitions. [2020-12-23 11:20:18,411 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5590 transitions. Word has length 93 [2020-12-23 11:20:18,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:18,411 INFO L481 AbstractCegarLoop]: Abstraction has 3639 states and 5590 transitions. [2020-12-23 11:20:18,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:20:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5590 transitions. [2020-12-23 11:20:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:20:18,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:18,413 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 11:20:18,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:20:18,414 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:18,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1956436651, now seen corresponding path program 1 times [2020-12-23 11:20:18,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:18,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288137629] [2020-12-23 11:20:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:18,546 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 11:20:18,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288137629] [2020-12-23 11:20:18,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:18,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:20:18,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871345008] [2020-12-23 11:20:18,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:20:18,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:18,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:20:18,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:20:18,549 INFO L87 Difference]: Start difference. First operand 3639 states and 5590 transitions. Second operand 6 states. [2020-12-23 11:20:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:19,228 INFO L93 Difference]: Finished difference Result 10747 states and 16536 transitions. [2020-12-23 11:20:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:20:19,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-23 11:20:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:19,266 INFO L225 Difference]: With dead ends: 10747 [2020-12-23 11:20:19,266 INFO L226 Difference]: Without dead ends: 7161 [2020-12-23 11:20:19,273 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 11:20:19,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7161 states. [2020-12-23 11:20:19,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7161 to 7159. [2020-12-23 11:20:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7159 states. [2020-12-23 11:20:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7159 states to 7159 states and 10934 transitions. [2020-12-23 11:20:19,821 INFO L78 Accepts]: Start accepts. Automaton has 7159 states and 10934 transitions. Word has length 93 [2020-12-23 11:20:19,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:19,822 INFO L481 AbstractCegarLoop]: Abstraction has 7159 states and 10934 transitions. [2020-12-23 11:20:19,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:20:19,822 INFO L276 IsEmpty]: Start isEmpty. Operand 7159 states and 10934 transitions. [2020-12-23 11:20:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:20:19,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:19,824 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 11:20:19,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:20:19,824 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:19,825 INFO L82 PathProgramCache]: Analyzing trace with hash -803132720, now seen corresponding path program 1 times [2020-12-23 11:20:19,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:19,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491193055] [2020-12-23 11:20:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:19,993 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 11:20:19,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491193055] [2020-12-23 11:20:19,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:19,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:20:19,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159110096] [2020-12-23 11:20:19,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:20:19,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:19,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:20:19,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:20:19,996 INFO L87 Difference]: Start difference. First operand 7159 states and 10934 transitions. Second operand 6 states. [2020-12-23 11:20:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:21,115 INFO L93 Difference]: Finished difference Result 21307 states and 32568 transitions. [2020-12-23 11:20:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:20:21,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-23 11:20:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:21,194 INFO L225 Difference]: With dead ends: 21307 [2020-12-23 11:20:21,194 INFO L226 Difference]: Without dead ends: 14201 [2020-12-23 11:20:21,208 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 11:20:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14201 states. [2020-12-23 11:20:22,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14201 to 14199. [2020-12-23 11:20:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14199 states. [2020-12-23 11:20:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14199 states to 14199 states and 21622 transitions. [2020-12-23 11:20:22,281 INFO L78 Accepts]: Start accepts. Automaton has 14199 states and 21622 transitions. Word has length 93 [2020-12-23 11:20:22,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:22,282 INFO L481 AbstractCegarLoop]: Abstraction has 14199 states and 21622 transitions. [2020-12-23 11:20:22,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:20:22,282 INFO L276 IsEmpty]: Start isEmpty. Operand 14199 states and 21622 transitions. [2020-12-23 11:20:22,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:20:22,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:22,283 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 11:20:22,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:20:22,284 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:22,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:22,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2027763019, now seen corresponding path program 1 times [2020-12-23 11:20:22,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:22,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900472580] [2020-12-23 11:20:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:22,449 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 11:20:22,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900472580] [2020-12-23 11:20:22,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:22,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:20:22,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524233357] [2020-12-23 11:20:22,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:20:22,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:22,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:20:22,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:20:22,456 INFO L87 Difference]: Start difference. First operand 14199 states and 21622 transitions. Second operand 6 states. [2020-12-23 11:20:24,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:24,710 INFO L93 Difference]: Finished difference Result 42363 states and 64504 transitions. [2020-12-23 11:20:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:20:24,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-23 11:20:24,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:24,781 INFO L225 Difference]: With dead ends: 42363 [2020-12-23 11:20:24,781 INFO L226 Difference]: Without dead ends: 28217 [2020-12-23 11:20:24,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:20:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28217 states. [2020-12-23 11:20:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28217 to 28215. [2020-12-23 11:20:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28215 states. [2020-12-23 11:20:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28215 states to 28215 states and 42806 transitions. [2020-12-23 11:20:26,592 INFO L78 Accepts]: Start accepts. Automaton has 28215 states and 42806 transitions. Word has length 93 [2020-12-23 11:20:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:26,593 INFO L481 AbstractCegarLoop]: Abstraction has 28215 states and 42806 transitions. [2020-12-23 11:20:26,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:20:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 28215 states and 42806 transitions. [2020-12-23 11:20:26,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:20:26,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:26,595 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 11:20:26,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:20:26,595 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:26,596 INFO L82 PathProgramCache]: Analyzing trace with hash -993336272, now seen corresponding path program 1 times [2020-12-23 11:20:26,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:26,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095143505] [2020-12-23 11:20:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:26,700 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 11:20:26,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095143505] [2020-12-23 11:20:26,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:26,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:20:26,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433271272] [2020-12-23 11:20:26,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:20:26,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:26,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:20:26,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:20:26,702 INFO L87 Difference]: Start difference. First operand 28215 states and 42806 transitions. Second operand 5 states. [2020-12-23 11:20:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:28,442 INFO L93 Difference]: Finished difference Result 56377 states and 85559 transitions. [2020-12-23 11:20:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:20:28,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-23 11:20:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:28,521 INFO L225 Difference]: With dead ends: 56377 [2020-12-23 11:20:28,522 INFO L226 Difference]: Without dead ends: 28215 [2020-12-23 11:20:28,558 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 11:20:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28215 states. [2020-12-23 11:20:30,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28215 to 28215. [2020-12-23 11:20:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28215 states. [2020-12-23 11:20:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28215 states to 28215 states and 42550 transitions. [2020-12-23 11:20:30,239 INFO L78 Accepts]: Start accepts. Automaton has 28215 states and 42550 transitions. Word has length 93 [2020-12-23 11:20:30,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:30,240 INFO L481 AbstractCegarLoop]: Abstraction has 28215 states and 42550 transitions. [2020-12-23 11:20:30,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:20:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 28215 states and 42550 transitions. [2020-12-23 11:20:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 11:20:30,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:30,241 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 11:20:30,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:20:30,242 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:30,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:30,242 INFO L82 PathProgramCache]: Analyzing trace with hash 727994603, now seen corresponding path program 1 times [2020-12-23 11:20:30,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:30,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235580095] [2020-12-23 11:20:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:30,455 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 11:20:30,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235580095] [2020-12-23 11:20:30,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:30,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 11:20:30,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539216530] [2020-12-23 11:20:30,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 11:20:30,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:30,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 11:20:30,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-23 11:20:30,458 INFO L87 Difference]: Start difference. First operand 28215 states and 42550 transitions. Second operand 9 states. [2020-12-23 11:20:55,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:55,321 INFO L93 Difference]: Finished difference Result 422483 states and 637508 transitions. [2020-12-23 11:20:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 11:20:55,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-23 11:20:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:56,669 INFO L225 Difference]: With dead ends: 422483 [2020-12-23 11:20:56,669 INFO L226 Difference]: Without dead ends: 394321 [2020-12-23 11:20:56,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-12-23 11:20:57,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394321 states. [2020-12-23 11:21:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394321 to 56375. [2020-12-23 11:21:05,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56375 states. [2020-12-23 11:21:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56375 states to 56375 states and 84022 transitions. [2020-12-23 11:21:05,893 INFO L78 Accepts]: Start accepts. Automaton has 56375 states and 84022 transitions. Word has length 93 [2020-12-23 11:21:05,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:05,893 INFO L481 AbstractCegarLoop]: Abstraction has 56375 states and 84022 transitions. [2020-12-23 11:21:05,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 11:21:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 56375 states and 84022 transitions. [2020-12-23 11:21:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-23 11:21:05,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:05,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:05,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:21:05,895 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:05,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1398673945, now seen corresponding path program 1 times [2020-12-23 11:21:05,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:05,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274582605] [2020-12-23 11:21:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:05,986 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 11:21:05,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274582605] [2020-12-23 11:21:05,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:05,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:21:05,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779523389] [2020-12-23 11:21:05,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:21:05,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:05,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:21:05,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:21:05,989 INFO L87 Difference]: Start difference. First operand 56375 states and 84022 transitions. Second operand 3 states. [2020-12-23 11:21:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:13,717 INFO L93 Difference]: Finished difference Result 138299 states and 205368 transitions. [2020-12-23 11:21:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:21:13,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-23 11:21:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:13,820 INFO L225 Difference]: With dead ends: 138299 [2020-12-23 11:21:13,820 INFO L226 Difference]: Without dead ends: 81977 [2020-12-23 11:21:13,862 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 11:21:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81977 states. [2020-12-23 11:21:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81977 to 81463. [2020-12-23 11:21:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81463 states. [2020-12-23 11:21:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81463 states to 81463 states and 119606 transitions. [2020-12-23 11:21:22,062 INFO L78 Accepts]: Start accepts. Automaton has 81463 states and 119606 transitions. Word has length 95 [2020-12-23 11:21:22,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:22,062 INFO L481 AbstractCegarLoop]: Abstraction has 81463 states and 119606 transitions. [2020-12-23 11:21:22,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:21:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand 81463 states and 119606 transitions. [2020-12-23 11:21:22,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-23 11:21:22,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:22,064 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 11:21:22,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:21:22,065 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:22,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:22,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1377671290, now seen corresponding path program 1 times [2020-12-23 11:21:22,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:22,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518992587] [2020-12-23 11:21:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:22,546 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 11:21:22,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518992587] [2020-12-23 11:21:22,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:22,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 11:21:22,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191199186] [2020-12-23 11:21:22,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 11:21:22,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:22,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 11:21:22,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 11:21:22,549 INFO L87 Difference]: Start difference. First operand 81463 states and 119606 transitions. Second operand 9 states. [2020-12-23 11:21:22,895 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-12-23 11:21:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:36,010 INFO L93 Difference]: Finished difference Result 203453 states and 299449 transitions. [2020-12-23 11:21:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 11:21:36,011 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-12-23 11:21:36,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:36,198 INFO L225 Difference]: With dead ends: 203453 [2020-12-23 11:21:36,198 INFO L226 Difference]: Without dead ends: 122043 [2020-12-23 11:21:36,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-12-23 11:21:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122043 states. [2020-12-23 11:21:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122043 to 81463. [2020-12-23 11:21:46,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81463 states. [2020-12-23 11:21:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81463 states to 81463 states and 118838 transitions. [2020-12-23 11:21:46,471 INFO L78 Accepts]: Start accepts. Automaton has 81463 states and 118838 transitions. Word has length 95 [2020-12-23 11:21:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:21:46,471 INFO L481 AbstractCegarLoop]: Abstraction has 81463 states and 118838 transitions. [2020-12-23 11:21:46,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 11:21:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 81463 states and 118838 transitions. [2020-12-23 11:21:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 11:21:46,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:21:46,474 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 11:21:46,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:21:46,475 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:21:46,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:21:46,475 INFO L82 PathProgramCache]: Analyzing trace with hash -78315606, now seen corresponding path program 1 times [2020-12-23 11:21:46,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:21:46,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207054994] [2020-12-23 11:21:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:21:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:21:46,544 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 11:21:46,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207054994] [2020-12-23 11:21:46,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:21:46,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:21:46,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350658142] [2020-12-23 11:21:46,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:21:46,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:21:46,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:21:46,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:21:46,546 INFO L87 Difference]: Start difference. First operand 81463 states and 118838 transitions. Second operand 3 states. [2020-12-23 11:22:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:22:01,756 INFO L93 Difference]: Finished difference Result 184382 states and 270908 transitions. [2020-12-23 11:22:01,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:22:01,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-23 11:22:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:22:02,117 INFO L225 Difference]: With dead ends: 184382 [2020-12-23 11:22:02,117 INFO L226 Difference]: Without dead ends: 128059 [2020-12-23 11:22:02,180 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 11:22:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128059 states. [2020-12-23 11:22:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128059 to 128057. [2020-12-23 11:22:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128057 states. [2020-12-23 11:22:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128057 states to 128057 states and 186424 transitions. [2020-12-23 11:22:17,718 INFO L78 Accepts]: Start accepts. Automaton has 128057 states and 186424 transitions. Word has length 96 [2020-12-23 11:22:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:22:17,718 INFO L481 AbstractCegarLoop]: Abstraction has 128057 states and 186424 transitions. [2020-12-23 11:22:17,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:22:17,718 INFO L276 IsEmpty]: Start isEmpty. Operand 128057 states and 186424 transitions. [2020-12-23 11:22:17,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 11:22:17,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:22:17,719 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 11:22:17,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:22:17,719 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:22:17,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:22:17,720 INFO L82 PathProgramCache]: Analyzing trace with hash 239953701, now seen corresponding path program 1 times [2020-12-23 11:22:17,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:22:17,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201836008] [2020-12-23 11:22:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:22:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:22:17,805 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 11:22:17,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201836008] [2020-12-23 11:22:17,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:22:17,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:22:17,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247074284] [2020-12-23 11:22:17,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:22:17,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:22:17,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:22:17,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:22:17,808 INFO L87 Difference]: Start difference. First operand 128057 states and 186424 transitions. Second operand 5 states. [2020-12-23 11:22:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:22:47,523 INFO L93 Difference]: Finished difference Result 243217 states and 352980 transitions. [2020-12-23 11:22:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:22:47,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-12-23 11:22:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:22:47,956 INFO L225 Difference]: With dead ends: 243217 [2020-12-23 11:22:47,957 INFO L226 Difference]: Without dead ends: 243215 [2020-12-23 11:22:48,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:22:48,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243215 states. [2020-12-23 11:23:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243215 to 132153. [2020-12-23 11:23:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132153 states. [2020-12-23 11:23:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132153 states to 132153 states and 190264 transitions. [2020-12-23 11:23:06,369 INFO L78 Accepts]: Start accepts. Automaton has 132153 states and 190264 transitions. Word has length 96 [2020-12-23 11:23:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:23:06,369 INFO L481 AbstractCegarLoop]: Abstraction has 132153 states and 190264 transitions. [2020-12-23 11:23:06,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:23:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 132153 states and 190264 transitions. [2020-12-23 11:23:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 11:23:06,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:23:06,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:06,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:23:06,395 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:23:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:23:06,396 INFO L82 PathProgramCache]: Analyzing trace with hash -714656545, now seen corresponding path program 1 times [2020-12-23 11:23:06,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:23:06,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129312832] [2020-12-23 11:23:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:23:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:23:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 11:23:06,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129312832] [2020-12-23 11:23:06,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:23:06,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 11:23:06,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651598032] [2020-12-23 11:23:06,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 11:23:06,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:23:06,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 11:23:06,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 11:23:06,658 INFO L87 Difference]: Start difference. First operand 132153 states and 190264 transitions. Second operand 9 states.