/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 11:14:47,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:14:47,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:14:47,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:14:47,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:14:47,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:14:47,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:14:47,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:14:47,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:14:47,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:14:47,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:14:47,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:14:47,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:14:47,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:14:47,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:14:47,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:14:47,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:14:47,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:14:47,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:14:47,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:14:47,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:14:47,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:14:47,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:14:47,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:14:47,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 11:14:47,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 11:14:47,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 11:14:47,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 11:14:47,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 11:14:47,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 11:14:47,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:14:47,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:14:47,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:14:47,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:14:47,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:14:47,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:14:47,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:14:47,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:14:47,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:14:47,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:14:47,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:14:47,892 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 11:14:47,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:14:47,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:14:47,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:14:47,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:14:47,944 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:14:47,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:14:47,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:14:47,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:14:47,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:14:47,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:14:47,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:14:47,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:14:47,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:14:47,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:14:47,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:14:47,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:14:47,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:14:47,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:14:47,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:14:47,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:14:47,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:14:47,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:14:47,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:14:47,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:14:47,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:14:47,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:14:48,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:14:48,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:14:48,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:14:48,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:14:48,368 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:14:48,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:14:48,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/def1e4e0c/f70f7d2c112648dca7b6e493a19d1c3d/FLAG294c19fc5 [2020-12-23 11:14:49,159 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:14:49,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:14:49,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/def1e4e0c/f70f7d2c112648dca7b6e493a19d1c3d/FLAG294c19fc5 [2020-12-23 11:14:49,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/def1e4e0c/f70f7d2c112648dca7b6e493a19d1c3d [2020-12-23 11:14:49,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:14:49,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:14:49,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:14:49,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:14:49,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:14:49,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:14:49" (1/1) ... [2020-12-23 11:14:49,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c120e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:49, skipping insertion in model container [2020-12-23 11:14:49,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:14:49" (1/1) ... [2020-12-23 11:14:49,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:14:49,582 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13205~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13338~0,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 11:14:49,825 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6328,6341] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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 11:14:49,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:14:49,914 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13205~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13338~0,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 11:14:49,979 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6328,6341] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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 11:14:50,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:14:50,056 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:14:50,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50 WrapperNode [2020-12-23 11:14:50,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:14:50,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:14:50,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:14:50,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:14:50,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (1/1) ... [2020-12-23 11:14:50,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (1/1) ... [2020-12-23 11:14:50,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:14:50,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:14:50,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:14:50,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:14:50,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (1/1) ... [2020-12-23 11:14:50,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (1/1) ... [2020-12-23 11:14:50,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (1/1) ... [2020-12-23 11:14:50,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (1/1) ... [2020-12-23 11:14:50,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (1/1) ... [2020-12-23 11:14:50,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (1/1) ... [2020-12-23 11:14:50,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (1/1) ... [2020-12-23 11:14:50,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:14:50,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:14:50,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:14:50,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:14:50,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (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 11:14:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:14:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:14:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:14:50,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:14:51,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:14:51,484 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:14:51,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:14:51 BoogieIcfgContainer [2020-12-23 11:14:51,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:14:51,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:14:51,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:14:51,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:14:51,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:14:49" (1/3) ... [2020-12-23 11:14:51,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bc7856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:14:51, skipping insertion in model container [2020-12-23 11:14:51,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:50" (2/3) ... [2020-12-23 11:14:51,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bc7856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:14:51, skipping insertion in model container [2020-12-23 11:14:51,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:14:51" (3/3) ... [2020-12-23 11:14:51,495 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:14:51,500 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:14:51,505 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:14:51,525 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:14:51,555 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:14:51,555 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:14:51,555 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:14:51,555 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:14:51,555 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:14:51,555 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:14:51,556 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:14:51,556 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:14:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-12-23 11:14:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:14:51,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:51,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:51,586 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:51,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:51,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1122612567, now seen corresponding path program 1 times [2020-12-23 11:14:51,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:51,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414217057] [2020-12-23 11:14:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:52,105 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 11:14:52,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414217057] [2020-12-23 11:14:52,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:52,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:14:52,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167065969] [2020-12-23 11:14:52,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:14:52,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:52,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:14:52,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:14:52,131 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-12-23 11:14:52,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:52,222 INFO L93 Difference]: Finished difference Result 260 states and 422 transitions. [2020-12-23 11:14:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:14:52,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 11:14:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:52,244 INFO L225 Difference]: With dead ends: 260 [2020-12-23 11:14:52,244 INFO L226 Difference]: Without dead ends: 179 [2020-12-23 11:14:52,249 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 11:14:52,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-23 11:14:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-12-23 11:14:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 11:14:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 256 transitions. [2020-12-23 11:14:52,388 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 256 transitions. Word has length 73 [2020-12-23 11:14:52,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:52,388 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 256 transitions. [2020-12-23 11:14:52,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:14:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 256 transitions. [2020-12-23 11:14:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 11:14:52,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:52,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:52,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:14:52,395 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:52,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:52,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1622464055, now seen corresponding path program 1 times [2020-12-23 11:14:52,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:52,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673546517] [2020-12-23 11:14:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:52,588 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 11:14:52,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673546517] [2020-12-23 11:14:52,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:52,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:14:52,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159866637] [2020-12-23 11:14:52,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:14:52,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:52,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:14:52,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:14:52,593 INFO L87 Difference]: Start difference. First operand 177 states and 256 transitions. Second operand 3 states. [2020-12-23 11:14:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:52,666 INFO L93 Difference]: Finished difference Result 429 states and 656 transitions. [2020-12-23 11:14:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:14:52,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 11:14:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:52,674 INFO L225 Difference]: With dead ends: 429 [2020-12-23 11:14:52,674 INFO L226 Difference]: Without dead ends: 295 [2020-12-23 11:14:52,677 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 11:14:52,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-23 11:14:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-12-23 11:14:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-23 11:14:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 440 transitions. [2020-12-23 11:14:52,729 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 440 transitions. Word has length 74 [2020-12-23 11:14:52,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:52,729 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 440 transitions. [2020-12-23 11:14:52,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:14:52,730 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 440 transitions. [2020-12-23 11:14:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 11:14:52,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:52,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:52,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:14:52,733 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:52,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:52,734 INFO L82 PathProgramCache]: Analyzing trace with hash 549627260, now seen corresponding path program 1 times [2020-12-23 11:14:52,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:52,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824422010] [2020-12-23 11:14:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:52,853 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 11:14:52,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824422010] [2020-12-23 11:14:52,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:52,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:14:52,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676406548] [2020-12-23 11:14:52,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:14:52,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:52,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:14:52,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:14:52,857 INFO L87 Difference]: Start difference. First operand 293 states and 440 transitions. Second operand 3 states. [2020-12-23 11:14:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:52,915 INFO L93 Difference]: Finished difference Result 761 states and 1182 transitions. [2020-12-23 11:14:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:14:52,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 11:14:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:52,920 INFO L225 Difference]: With dead ends: 761 [2020-12-23 11:14:52,920 INFO L226 Difference]: Without dead ends: 511 [2020-12-23 11:14:52,922 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 11:14:52,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-12-23 11:14:52,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2020-12-23 11:14:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-12-23 11:14:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 780 transitions. [2020-12-23 11:14:52,990 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 780 transitions. Word has length 75 [2020-12-23 11:14:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:52,995 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 780 transitions. [2020-12-23 11:14:52,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:14:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 780 transitions. [2020-12-23 11:14:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 11:14:52,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:52,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:53,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:14:53,000 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:53,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:53,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1347673334, now seen corresponding path program 1 times [2020-12-23 11:14:53,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:53,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976966878] [2020-12-23 11:14:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:53,140 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 11:14:53,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976966878] [2020-12-23 11:14:53,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:53,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:14:53,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719939549] [2020-12-23 11:14:53,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:14:53,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:53,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:14:53,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:14:53,144 INFO L87 Difference]: Start difference. First operand 509 states and 780 transitions. Second operand 3 states. [2020-12-23 11:14:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:53,219 INFO L93 Difference]: Finished difference Result 1377 states and 2150 transitions. [2020-12-23 11:14:53,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:14:53,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 11:14:53,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:53,227 INFO L225 Difference]: With dead ends: 1377 [2020-12-23 11:14:53,227 INFO L226 Difference]: Without dead ends: 911 [2020-12-23 11:14:53,230 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 11:14:53,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-12-23 11:14:53,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 909. [2020-12-23 11:14:53,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2020-12-23 11:14:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1404 transitions. [2020-12-23 11:14:53,290 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1404 transitions. Word has length 76 [2020-12-23 11:14:53,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:53,291 INFO L481 AbstractCegarLoop]: Abstraction has 909 states and 1404 transitions. [2020-12-23 11:14:53,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:14:53,292 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1404 transitions. [2020-12-23 11:14:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 11:14:53,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:53,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:53,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:14:53,294 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:53,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:53,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1762980839, now seen corresponding path program 1 times [2020-12-23 11:14:53,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:53,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672774629] [2020-12-23 11:14:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:53,388 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 11:14:53,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672774629] [2020-12-23 11:14:53,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:53,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:14:53,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239963572] [2020-12-23 11:14:53,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:14:53,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:53,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:14:53,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:14:53,391 INFO L87 Difference]: Start difference. First operand 909 states and 1404 transitions. Second operand 3 states. [2020-12-23 11:14:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:53,504 INFO L93 Difference]: Finished difference Result 2513 states and 3918 transitions. [2020-12-23 11:14:53,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:14:53,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 11:14:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:53,517 INFO L225 Difference]: With dead ends: 2513 [2020-12-23 11:14:53,518 INFO L226 Difference]: Without dead ends: 1647 [2020-12-23 11:14:53,520 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 11:14:53,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2020-12-23 11:14:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1645. [2020-12-23 11:14:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1645 states. [2020-12-23 11:14:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2540 transitions. [2020-12-23 11:14:53,647 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2540 transitions. Word has length 77 [2020-12-23 11:14:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:53,648 INFO L481 AbstractCegarLoop]: Abstraction has 1645 states and 2540 transitions. [2020-12-23 11:14:53,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:14:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2540 transitions. [2020-12-23 11:14:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:14:53,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:53,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:53,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:14:53,650 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:53,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1296361934, now seen corresponding path program 1 times [2020-12-23 11:14:53,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:53,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060283803] [2020-12-23 11:14:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:53,802 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 11:14:53,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060283803] [2020-12-23 11:14:53,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:53,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:14:53,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651651060] [2020-12-23 11:14:53,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:14:53,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:53,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:14:53,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:14:53,805 INFO L87 Difference]: Start difference. First operand 1645 states and 2540 transitions. Second operand 6 states. [2020-12-23 11:14:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:54,341 INFO L93 Difference]: Finished difference Result 4833 states and 7502 transitions. [2020-12-23 11:14:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:14:54,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 11:14:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:54,360 INFO L225 Difference]: With dead ends: 4833 [2020-12-23 11:14:54,360 INFO L226 Difference]: Without dead ends: 3231 [2020-12-23 11:14:54,363 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 11:14:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2020-12-23 11:14:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3229. [2020-12-23 11:14:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3229 states. [2020-12-23 11:14:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 4988 transitions. [2020-12-23 11:14:54,588 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 4988 transitions. Word has length 78 [2020-12-23 11:14:54,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:54,588 INFO L481 AbstractCegarLoop]: Abstraction has 3229 states and 4988 transitions. [2020-12-23 11:14:54,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:14:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 4988 transitions. [2020-12-23 11:14:54,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:14:54,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:54,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:54,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:14:54,590 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:54,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:54,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1156574829, now seen corresponding path program 1 times [2020-12-23 11:14:54,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:54,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505721019] [2020-12-23 11:14:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:54,784 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 11:14:54,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505721019] [2020-12-23 11:14:54,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:54,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:14:54,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172542622] [2020-12-23 11:14:54,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:14:54,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:54,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:14:54,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:14:54,787 INFO L87 Difference]: Start difference. First operand 3229 states and 4988 transitions. Second operand 6 states. [2020-12-23 11:14:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:55,536 INFO L93 Difference]: Finished difference Result 9569 states and 14814 transitions. [2020-12-23 11:14:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:14:55,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 11:14:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:55,570 INFO L225 Difference]: With dead ends: 9569 [2020-12-23 11:14:55,570 INFO L226 Difference]: Without dead ends: 6383 [2020-12-23 11:14:55,576 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 11:14:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2020-12-23 11:14:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6381. [2020-12-23 11:14:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-23 11:14:56,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9836 transitions. [2020-12-23 11:14:56,034 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9836 transitions. Word has length 78 [2020-12-23 11:14:56,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:56,035 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 9836 transitions. [2020-12-23 11:14:56,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:14:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9836 transitions. [2020-12-23 11:14:56,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:14:56,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:56,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:56,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:14:56,036 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:56,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:56,037 INFO L82 PathProgramCache]: Analyzing trace with hash -290454766, now seen corresponding path program 1 times [2020-12-23 11:14:56,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:56,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176316874] [2020-12-23 11:14:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:56,128 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 11:14:56,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176316874] [2020-12-23 11:14:56,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:56,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:14:56,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376558989] [2020-12-23 11:14:56,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:14:56,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:56,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:14:56,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:14:56,131 INFO L87 Difference]: Start difference. First operand 6381 states and 9836 transitions. Second operand 5 states. [2020-12-23 11:14:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:56,816 INFO L93 Difference]: Finished difference Result 12719 states and 19629 transitions. [2020-12-23 11:14:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:14:56,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-23 11:14:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:56,851 INFO L225 Difference]: With dead ends: 12719 [2020-12-23 11:14:56,851 INFO L226 Difference]: Without dead ends: 6381 [2020-12-23 11:14:56,860 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 11:14:56,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2020-12-23 11:14:57,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 6381. [2020-12-23 11:14:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-23 11:14:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9772 transitions. [2020-12-23 11:14:57,399 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9772 transitions. Word has length 78 [2020-12-23 11:14:57,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:57,399 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 9772 transitions. [2020-12-23 11:14:57,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:14:57,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9772 transitions. [2020-12-23 11:14:57,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:14:57,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:57,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:57,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:14:57,401 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:57,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:57,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1754526323, now seen corresponding path program 1 times [2020-12-23 11:14:57,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:57,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481957667] [2020-12-23 11:14:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:57,488 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 11:14:57,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481957667] [2020-12-23 11:14:57,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:57,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:14:57,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816581125] [2020-12-23 11:14:57,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:14:57,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:57,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:14:57,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:14:57,490 INFO L87 Difference]: Start difference. First operand 6381 states and 9772 transitions. Second operand 5 states. [2020-12-23 11:14:58,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:58,130 INFO L93 Difference]: Finished difference Result 12719 states and 19501 transitions. [2020-12-23 11:14:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:14:58,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-23 11:14:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:58,229 INFO L225 Difference]: With dead ends: 12719 [2020-12-23 11:14:58,230 INFO L226 Difference]: Without dead ends: 6381 [2020-12-23 11:14:58,243 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 11:14:58,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2020-12-23 11:14:58,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 6381. [2020-12-23 11:14:58,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-23 11:14:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9708 transitions. [2020-12-23 11:14:58,787 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9708 transitions. Word has length 78 [2020-12-23 11:14:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:58,787 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 9708 transitions. [2020-12-23 11:14:58,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:14:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9708 transitions. [2020-12-23 11:14:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:14:58,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:58,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:58,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:14:58,789 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:58,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:58,790 INFO L82 PathProgramCache]: Analyzing trace with hash -427141134, now seen corresponding path program 1 times [2020-12-23 11:14:58,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:58,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407728529] [2020-12-23 11:14:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:59,040 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 11:14:59,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407728529] [2020-12-23 11:14:59,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:59,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:14:59,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168987556] [2020-12-23 11:14:59,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:14:59,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:59,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:14:59,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:14:59,044 INFO L87 Difference]: Start difference. First operand 6381 states and 9708 transitions. Second operand 8 states. [2020-12-23 11:15:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:15:03,830 INFO L93 Difference]: Finished difference Result 76099 states and 116023 transitions. [2020-12-23 11:15:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 11:15:03,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-23 11:15:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:15:04,057 INFO L225 Difference]: With dead ends: 76099 [2020-12-23 11:15:04,058 INFO L226 Difference]: Without dead ends: 69761 [2020-12-23 11:15:04,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-12-23 11:15:04,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69761 states. [2020-12-23 11:15:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69761 to 12717. [2020-12-23 11:15:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12717 states. [2020-12-23 11:15:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12717 states to 12717 states and 19116 transitions. [2020-12-23 11:15:06,037 INFO L78 Accepts]: Start accepts. Automaton has 12717 states and 19116 transitions. Word has length 78 [2020-12-23 11:15:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:15:06,037 INFO L481 AbstractCegarLoop]: Abstraction has 12717 states and 19116 transitions. [2020-12-23 11:15:06,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:15:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 12717 states and 19116 transitions. [2020-12-23 11:15:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 11:15:06,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:15:06,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:15:06,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:15:06,039 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:15:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:15:06,040 INFO L82 PathProgramCache]: Analyzing trace with hash 912411086, now seen corresponding path program 1 times [2020-12-23 11:15:06,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:15:06,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156241918] [2020-12-23 11:15:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:15:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:15:06,117 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 11:15:06,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156241918] [2020-12-23 11:15:06,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:15:06,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:15:06,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604834120] [2020-12-23 11:15:06,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:15:06,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:15:06,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:15:06,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:15:06,120 INFO L87 Difference]: Start difference. First operand 12717 states and 19116 transitions. Second operand 3 states. [2020-12-23 11:15:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:15:08,944 INFO L93 Difference]: Finished difference Result 36657 states and 54830 transitions. [2020-12-23 11:15:08,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:15:08,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-23 11:15:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:15:08,993 INFO L225 Difference]: With dead ends: 36657 [2020-12-23 11:15:08,993 INFO L226 Difference]: Without dead ends: 23983 [2020-12-23 11:15:09,015 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 11:15:09,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23983 states. [2020-12-23 11:15:11,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23983 to 23725. [2020-12-23 11:15:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23725 states. [2020-12-23 11:15:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23725 states to 23725 states and 34860 transitions. [2020-12-23 11:15:11,292 INFO L78 Accepts]: Start accepts. Automaton has 23725 states and 34860 transitions. Word has length 80 [2020-12-23 11:15:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:15:11,292 INFO L481 AbstractCegarLoop]: Abstraction has 23725 states and 34860 transitions. [2020-12-23 11:15:11,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:15:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 23725 states and 34860 transitions. [2020-12-23 11:15:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 11:15:11,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:15:11,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:15:11,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:15:11,294 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:15:11,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:15:11,295 INFO L82 PathProgramCache]: Analyzing trace with hash 933413741, now seen corresponding path program 1 times [2020-12-23 11:15:11,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:15:11,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063422095] [2020-12-23 11:15:11,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:15:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:15:11,673 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 11:15:11,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063422095] [2020-12-23 11:15:11,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:15:11,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:15:11,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826417918] [2020-12-23 11:15:11,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:15:11,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:15:11,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:15:11,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:15:11,676 INFO L87 Difference]: Start difference. First operand 23725 states and 34860 transitions. Second operand 8 states. [2020-12-23 11:15:11,978 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-12-23 11:15:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:15:15,522 INFO L93 Difference]: Finished difference Result 59187 states and 87215 transitions. [2020-12-23 11:15:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:15:15,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-23 11:15:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:15:15,580 INFO L225 Difference]: With dead ends: 59187 [2020-12-23 11:15:15,580 INFO L226 Difference]: Without dead ends: 35505 [2020-12-23 11:15:15,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2020-12-23 11:15:15,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35505 states. [2020-12-23 11:15:18,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35505 to 23725. [2020-12-23 11:15:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23725 states. [2020-12-23 11:15:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23725 states to 23725 states and 34604 transitions. [2020-12-23 11:15:18,626 INFO L78 Accepts]: Start accepts. Automaton has 23725 states and 34604 transitions. Word has length 80 [2020-12-23 11:15:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:15:18,626 INFO L481 AbstractCegarLoop]: Abstraction has 23725 states and 34604 transitions. [2020-12-23 11:15:18,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:15:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 23725 states and 34604 transitions. [2020-12-23 11:15:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 11:15:18,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:15:18,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:15:18,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:15:18,628 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:15:18,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:15:18,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1558777127, now seen corresponding path program 1 times [2020-12-23 11:15:18,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:15:18,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493672060] [2020-12-23 11:15:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:15:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:15:18,693 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 11:15:18,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493672060] [2020-12-23 11:15:18,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:15:18,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:15:18,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469536173] [2020-12-23 11:15:18,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:15:18,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:15:18,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:15:18,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:15:18,696 INFO L87 Difference]: Start difference. First operand 23725 states and 34604 transitions. Second operand 3 states. [2020-12-23 11:15:21,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:15:21,541 INFO L93 Difference]: Finished difference Result 46516 states and 68402 transitions. [2020-12-23 11:15:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:15:21,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-23 11:15:21,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:15:21,596 INFO L225 Difference]: With dead ends: 46516 [2020-12-23 11:15:21,596 INFO L226 Difference]: Without dead ends: 33841 [2020-12-23 11:15:21,625 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 11:15:21,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33841 states. [2020-12-23 11:15:25,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33841 to 33839. [2020-12-23 11:15:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33839 states. [2020-12-23 11:15:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33839 states to 33839 states and 49198 transitions. [2020-12-23 11:15:25,109 INFO L78 Accepts]: Start accepts. Automaton has 33839 states and 49198 transitions. Word has length 81 [2020-12-23 11:15:25,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:15:25,110 INFO L481 AbstractCegarLoop]: Abstraction has 33839 states and 49198 transitions. [2020-12-23 11:15:25,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:15:25,110 INFO L276 IsEmpty]: Start isEmpty. Operand 33839 states and 49198 transitions. [2020-12-23 11:15:25,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 11:15:25,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:15:25,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:15:25,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:15:25,111 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:15:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:15:25,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1130854413, now seen corresponding path program 1 times [2020-12-23 11:15:25,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:15:25,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537975812] [2020-12-23 11:15:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:15:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:15:25,242 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 11:15:25,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537975812] [2020-12-23 11:15:25,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:15:25,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:15:25,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812544025] [2020-12-23 11:15:25,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:15:25,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:15:25,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:15:25,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:15:25,245 INFO L87 Difference]: Start difference. First operand 33839 states and 49198 transitions. Second operand 5 states. [2020-12-23 11:15:31,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:15:31,017 INFO L93 Difference]: Finished difference Result 60987 states and 88393 transitions. [2020-12-23 11:15:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:15:31,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-23 11:15:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:15:31,090 INFO L225 Difference]: With dead ends: 60987 [2020-12-23 11:15:31,091 INFO L226 Difference]: Without dead ends: 60985 [2020-12-23 11:15:31,103 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 11:15:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60985 states. [2020-12-23 11:15:35,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60985 to 34863. [2020-12-23 11:15:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34863 states. [2020-12-23 11:15:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34863 states to 34863 states and 50094 transitions. [2020-12-23 11:15:35,270 INFO L78 Accepts]: Start accepts. Automaton has 34863 states and 50094 transitions. Word has length 81 [2020-12-23 11:15:35,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:15:35,271 INFO L481 AbstractCegarLoop]: Abstraction has 34863 states and 50094 transitions. [2020-12-23 11:15:35,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:15:35,271 INFO L276 IsEmpty]: Start isEmpty. Operand 34863 states and 50094 transitions. [2020-12-23 11:15:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 11:15:35,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:15:35,281 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 11:15:35,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:15:35,281 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:15:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:15:35,282 INFO L82 PathProgramCache]: Analyzing trace with hash 905576252, now seen corresponding path program 1 times [2020-12-23 11:15:35,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:15:35,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834568281] [2020-12-23 11:15:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:15:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:15:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 11:15:35,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834568281] [2020-12-23 11:15:35,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:15:35,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:15:35,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986612512] [2020-12-23 11:15:35,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:15:35,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:15:35,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:15:35,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:15:35,549 INFO L87 Difference]: Start difference. First operand 34863 states and 50094 transitions. Second operand 8 states. [2020-12-23 11:15:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:15:57,786 INFO L93 Difference]: Finished difference Result 250237 states and 359413 transitions. [2020-12-23 11:15:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:15:57,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-23 11:15:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:15:58,363 INFO L225 Difference]: With dead ends: 250237 [2020-12-23 11:15:58,363 INFO L226 Difference]: Without dead ends: 215419 [2020-12-23 11:15:58,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:15:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215419 states. [2020-12-23 11:16:08,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215419 to 69679. [2020-12-23 11:16:08,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69679 states. [2020-12-23 11:16:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69679 states to 69679 states and 99758 transitions. [2020-12-23 11:16:08,140 INFO L78 Accepts]: Start accepts. Automaton has 69679 states and 99758 transitions. Word has length 112 [2020-12-23 11:16:08,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:08,141 INFO L481 AbstractCegarLoop]: Abstraction has 69679 states and 99758 transitions. [2020-12-23 11:16:08,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:16:08,141 INFO L276 IsEmpty]: Start isEmpty. Operand 69679 states and 99758 transitions. [2020-12-23 11:16:08,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 11:16:08,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:08,153 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 11:16:08,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:16:08,154 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:08,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:08,154 INFO L82 PathProgramCache]: Analyzing trace with hash -818965810, now seen corresponding path program 1 times [2020-12-23 11:16:08,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:08,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220535329] [2020-12-23 11:16:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 11:16:08,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220535329] [2020-12-23 11:16:08,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:08,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:16:08,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725494762] [2020-12-23 11:16:08,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:16:08,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:08,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:16:08,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:16:08,350 INFO L87 Difference]: Start difference. First operand 69679 states and 99758 transitions. Second operand 8 states. [2020-12-23 11:16:38,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:38,919 INFO L93 Difference]: Finished difference Result 285053 states and 409077 transitions. [2020-12-23 11:16:38,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:16:38,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-23 11:16:38,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:39,448 INFO L225 Difference]: With dead ends: 285053 [2020-12-23 11:16:39,448 INFO L226 Difference]: Without dead ends: 250235 [2020-12-23 11:16:39,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:16:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250235 states. [2020-12-23 11:16:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250235 to 121967. [2020-12-23 11:16:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121967 states. [2020-12-23 11:16:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121967 states to 121967 states and 173934 transitions. [2020-12-23 11:16:56,839 INFO L78 Accepts]: Start accepts. Automaton has 121967 states and 173934 transitions. Word has length 112 [2020-12-23 11:16:56,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:56,839 INFO L481 AbstractCegarLoop]: Abstraction has 121967 states and 173934 transitions. [2020-12-23 11:16:56,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:16:56,840 INFO L276 IsEmpty]: Start isEmpty. Operand 121967 states and 173934 transitions. [2020-12-23 11:16:56,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 11:16:56,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:56,852 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 11:16:56,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:16:56,852 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:56,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:56,853 INFO L82 PathProgramCache]: Analyzing trace with hash 334980296, now seen corresponding path program 1 times [2020-12-23 11:16:56,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:56,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245875585] [2020-12-23 11:16:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 11:16:57,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245875585] [2020-12-23 11:16:57,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:57,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:16:57,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032344097] [2020-12-23 11:16:57,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:16:57,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:57,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:16:57,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:16:57,334 INFO L87 Difference]: Start difference. First operand 121967 states and 173934 transitions. Second operand 8 states. [2020-12-23 11:17:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:34,472 INFO L93 Difference]: Finished difference Result 319869 states and 458741 transitions. [2020-12-23 11:17:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:17:34,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-23 11:17:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:35,158 INFO L225 Difference]: With dead ends: 319869 [2020-12-23 11:17:35,158 INFO L226 Difference]: Without dead ends: 285051 [2020-12-23 11:17:35,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:17:35,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285051 states. [2020-12-23 11:17:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285051 to 156783. [2020-12-23 11:17:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156783 states. [2020-12-23 11:17:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156783 states to 156783 states and 223598 transitions. [2020-12-23 11:17:57,597 INFO L78 Accepts]: Start accepts. Automaton has 156783 states and 223598 transitions. Word has length 112 [2020-12-23 11:17:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:57,597 INFO L481 AbstractCegarLoop]: Abstraction has 156783 states and 223598 transitions. [2020-12-23 11:17:57,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:17:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 156783 states and 223598 transitions. [2020-12-23 11:17:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 11:17:57,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:57,904 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 11:17:57,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 11:17:57,904 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:57,905 INFO L82 PathProgramCache]: Analyzing trace with hash -522920382, now seen corresponding path program 1 times [2020-12-23 11:17:57,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:57,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047287466] [2020-12-23 11:17:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 11:17:58,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047287466] [2020-12-23 11:17:58,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:58,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:17:58,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295483189] [2020-12-23 11:17:58,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:17:58,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:58,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:17:58,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:17:58,201 INFO L87 Difference]: Start difference. First operand 156783 states and 223598 transitions. Second operand 8 states. [2020-12-23 11:18:42,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:18:42,092 INFO L93 Difference]: Finished difference Result 354685 states and 508405 transitions. [2020-12-23 11:18:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:18:42,093 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-23 11:18:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:18:42,691 INFO L225 Difference]: With dead ends: 354685 [2020-12-23 11:18:42,691 INFO L226 Difference]: Without dead ends: 319867 [2020-12-23 11:18:42,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:18:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319867 states.