/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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:49:49,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:49:49,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:49:49,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:49:49,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:49:49,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:49:49,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:49:49,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:49:49,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:49:49,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:49:49,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:49:49,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:49:49,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:49:49,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:49:49,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:49:49,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:49:49,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:49:49,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:49:49,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:49:49,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:49:49,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:49:49,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:49:49,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:49:49,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:49:49,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:49:49,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:49:49,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:49:49,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:49:49,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:49:49,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:49:49,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:49:49,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:49:49,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:49:49,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:49:49,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:49:49,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:49:49,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:49:49,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:49:49,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:49:49,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:49:49,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:49:49,183 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 10:49:49,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:49:49,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:49:49,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:49:49,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:49:49,235 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:49:49,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:49:49,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:49:49,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:49:49,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:49:49,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:49:49,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:49:49,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:49:49,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:49:49,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:49:49,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:49:49,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:49:49,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:49:49,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:49:49,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:49:49,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:49:49,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:49:49,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:49:49,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:49:49,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:49:49,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:49:49,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:49:49,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:49:49,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:49:49,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:49:49,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:49:49,658 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:49:49,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:49:49,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2ffbf2cfd/961c075b8a2d4287aa442d49e1a5c735/FLAG3fc0d04af [2020-12-23 10:49:50,433 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:49:50,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:49:50,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2ffbf2cfd/961c075b8a2d4287aa442d49e1a5c735/FLAG3fc0d04af [2020-12-23 10:49:50,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2ffbf2cfd/961c075b8a2d4287aa442d49e1a5c735 [2020-12-23 10:49:50,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:49:50,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:49:50,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:49:50,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:49:50,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:49:50,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:49:50" (1/1) ... [2020-12-23 10:49:50,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3b6872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:50, skipping insertion in model container [2020-12-23 10:49:50,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:49:50" (1/1) ... [2020-12-23 10:49:50,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:49:50,820 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[~alive1~0,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[~alive2~0,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[~alive3~0,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[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19080~0,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[~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[~p4_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[~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[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19215~0,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 10:49:51,094 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4971,4984] 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[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,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[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] 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[~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[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] 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[~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[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] 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,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] [2020-12-23 10:49:51,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:49:51,172 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[~alive1~0,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[~alive2~0,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[~alive3~0,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[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19080~0,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[~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[~p4_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[~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[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_19215~0,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 10:49:51,217 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4971,4984] 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[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,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[~node4____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_1~0,] 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[~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[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] 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[~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[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] 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,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] [2020-12-23 10:49:51,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:49:51,266 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:49:51,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51 WrapperNode [2020-12-23 10:49:51,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:49:51,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:49:51,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:49:51,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:49:51,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (1/1) ... [2020-12-23 10:49:51,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (1/1) ... [2020-12-23 10:49:51,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:49:51,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:49:51,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:49:51,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:49:51,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (1/1) ... [2020-12-23 10:49:51,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (1/1) ... [2020-12-23 10:49:51,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (1/1) ... [2020-12-23 10:49:51,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (1/1) ... [2020-12-23 10:49:51,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (1/1) ... [2020-12-23 10:49:51,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (1/1) ... [2020-12-23 10:49:51,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (1/1) ... [2020-12-23 10:49:51,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:49:51,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:49:51,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:49:51,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:49:51,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (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 10:49:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:49:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:49:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:49:51,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:49:52,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:49:52,298 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:49:52,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:49:52 BoogieIcfgContainer [2020-12-23 10:49:52,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:49:52,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:49:52,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:49:52,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:49:52,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:49:50" (1/3) ... [2020-12-23 10:49:52,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc1c618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:49:52, skipping insertion in model container [2020-12-23 10:49:52,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:49:51" (2/3) ... [2020-12-23 10:49:52,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc1c618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:49:52, skipping insertion in model container [2020-12-23 10:49:52,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:49:52" (3/3) ... [2020-12-23 10:49:52,310 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 10:49:52,317 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:49:52,322 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:49:52,341 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:49:52,370 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:49:52,370 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:49:52,370 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:49:52,370 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:49:52,370 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:49:52,371 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:49:52,371 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:49:52,371 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:49:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-12-23 10:49:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 10:49:52,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:52,399 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] [2020-12-23 10:49:52,399 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:52,406 INFO L82 PathProgramCache]: Analyzing trace with hash 2117585175, now seen corresponding path program 1 times [2020-12-23 10:49:52,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:52,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034893358] [2020-12-23 10:49:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:52,793 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 10:49:52,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034893358] [2020-12-23 10:49:52,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:49:52,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:49:52,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087859482] [2020-12-23 10:49:52,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:49:52,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:49:52,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:49:52,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:49:52,823 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 3 states. [2020-12-23 10:49:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:49:52,905 INFO L93 Difference]: Finished difference Result 266 states and 425 transitions. [2020-12-23 10:49:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:49:52,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-23 10:49:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:49:52,921 INFO L225 Difference]: With dead ends: 266 [2020-12-23 10:49:52,921 INFO L226 Difference]: Without dead ends: 175 [2020-12-23 10:49:52,925 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 10:49:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-23 10:49:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-12-23 10:49:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-23 10:49:52,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 259 transitions. [2020-12-23 10:49:52,988 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 259 transitions. Word has length 49 [2020-12-23 10:49:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:49:52,989 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 259 transitions. [2020-12-23 10:49:52,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:49:52,989 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 259 transitions. [2020-12-23 10:49:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 10:49:52,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:52,992 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] [2020-12-23 10:49:52,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:49:52,993 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:52,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:52,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1419109229, now seen corresponding path program 1 times [2020-12-23 10:49:52,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:52,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920447523] [2020-12-23 10:49:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:53,154 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 10:49:53,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920447523] [2020-12-23 10:49:53,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:49:53,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:49:53,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342885897] [2020-12-23 10:49:53,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:49:53,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:49:53,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:49:53,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:49:53,160 INFO L87 Difference]: Start difference. First operand 173 states and 259 transitions. Second operand 3 states. [2020-12-23 10:49:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:49:53,260 INFO L93 Difference]: Finished difference Result 433 states and 671 transitions. [2020-12-23 10:49:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:49:53,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-23 10:49:53,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:49:53,265 INFO L225 Difference]: With dead ends: 433 [2020-12-23 10:49:53,265 INFO L226 Difference]: Without dead ends: 287 [2020-12-23 10:49:53,267 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 10:49:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-23 10:49:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2020-12-23 10:49:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-12-23 10:49:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 436 transitions. [2020-12-23 10:49:53,338 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 436 transitions. Word has length 50 [2020-12-23 10:49:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:49:53,339 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 436 transitions. [2020-12-23 10:49:53,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:49:53,339 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 436 transitions. [2020-12-23 10:49:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 10:49:53,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:53,341 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] [2020-12-23 10:49:53,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:49:53,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:53,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:53,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1570665396, now seen corresponding path program 1 times [2020-12-23 10:49:53,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:53,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171673709] [2020-12-23 10:49:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:53,446 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 10:49:53,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171673709] [2020-12-23 10:49:53,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:49:53,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:49:53,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128784992] [2020-12-23 10:49:53,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:49:53,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:49:53,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:49:53,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:49:53,450 INFO L87 Difference]: Start difference. First operand 285 states and 436 transitions. Second operand 3 states. [2020-12-23 10:49:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:49:53,511 INFO L93 Difference]: Finished difference Result 737 states and 1150 transitions. [2020-12-23 10:49:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:49:53,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-23 10:49:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:49:53,516 INFO L225 Difference]: With dead ends: 737 [2020-12-23 10:49:53,517 INFO L226 Difference]: Without dead ends: 479 [2020-12-23 10:49:53,519 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 10:49:53,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-12-23 10:49:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2020-12-23 10:49:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-12-23 10:49:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 736 transitions. [2020-12-23 10:49:53,622 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 736 transitions. Word has length 51 [2020-12-23 10:49:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:49:53,623 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 736 transitions. [2020-12-23 10:49:53,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:49:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 736 transitions. [2020-12-23 10:49:53,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 10:49:53,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:53,625 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] [2020-12-23 10:49:53,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:49:53,626 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:53,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1205622842, now seen corresponding path program 1 times [2020-12-23 10:49:53,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:53,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979356068] [2020-12-23 10:49:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:53,818 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 10:49:53,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979356068] [2020-12-23 10:49:53,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:49:53,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:49:53,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994526101] [2020-12-23 10:49:53,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:49:53,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:49:53,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:49:53,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:49:53,822 INFO L87 Difference]: Start difference. First operand 477 states and 736 transitions. Second operand 6 states. [2020-12-23 10:49:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:49:54,050 INFO L93 Difference]: Finished difference Result 2033 states and 3172 transitions. [2020-12-23 10:49:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:49:54,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-23 10:49:54,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:49:54,061 INFO L225 Difference]: With dead ends: 2033 [2020-12-23 10:49:54,062 INFO L226 Difference]: Without dead ends: 1583 [2020-12-23 10:49:54,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:49:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-12-23 10:49:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1577. [2020-12-23 10:49:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-12-23 10:49:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2452 transitions. [2020-12-23 10:49:54,231 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2452 transitions. Word has length 52 [2020-12-23 10:49:54,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:49:54,231 INFO L481 AbstractCegarLoop]: Abstraction has 1577 states and 2452 transitions. [2020-12-23 10:49:54,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:49:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2452 transitions. [2020-12-23 10:49:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 10:49:54,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:54,234 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] [2020-12-23 10:49:54,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:49:54,235 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:54,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1744489678, now seen corresponding path program 1 times [2020-12-23 10:49:54,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:54,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087834905] [2020-12-23 10:49:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:54,294 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 10:49:54,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087834905] [2020-12-23 10:49:54,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:49:54,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:49:54,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904216928] [2020-12-23 10:49:54,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:49:54,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:49:54,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:49:54,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:49:54,298 INFO L87 Difference]: Start difference. First operand 1577 states and 2452 transitions. Second operand 3 states. [2020-12-23 10:49:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:49:54,501 INFO L93 Difference]: Finished difference Result 4141 states and 6438 transitions. [2020-12-23 10:49:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:49:54,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-23 10:49:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:49:54,519 INFO L225 Difference]: With dead ends: 4141 [2020-12-23 10:49:54,519 INFO L226 Difference]: Without dead ends: 2591 [2020-12-23 10:49:54,524 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 10:49:54,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2020-12-23 10:49:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2020-12-23 10:49:54,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2589 states. [2020-12-23 10:49:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3980 transitions. [2020-12-23 10:49:54,761 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3980 transitions. Word has length 53 [2020-12-23 10:49:54,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:49:54,761 INFO L481 AbstractCegarLoop]: Abstraction has 2589 states and 3980 transitions. [2020-12-23 10:49:54,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:49:54,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3980 transitions. [2020-12-23 10:49:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 10:49:54,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:54,766 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] [2020-12-23 10:49:54,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:49:54,767 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:54,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:54,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1689386392, now seen corresponding path program 1 times [2020-12-23 10:49:54,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:54,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539795023] [2020-12-23 10:49:54,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:54,923 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 10:49:54,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539795023] [2020-12-23 10:49:54,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:49:54,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:49:54,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874811267] [2020-12-23 10:49:54,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:49:54,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:49:54,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:49:54,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:49:54,927 INFO L87 Difference]: Start difference. First operand 2589 states and 3980 transitions. Second operand 6 states. [2020-12-23 10:49:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:49:55,619 INFO L93 Difference]: Finished difference Result 11799 states and 18193 transitions. [2020-12-23 10:49:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:49:55,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-12-23 10:49:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:49:55,673 INFO L225 Difference]: With dead ends: 11799 [2020-12-23 10:49:55,674 INFO L226 Difference]: Without dead ends: 9237 [2020-12-23 10:49:55,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:49:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9237 states. [2020-12-23 10:49:56,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9237 to 5149. [2020-12-23 10:49:56,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5149 states. [2020-12-23 10:49:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 7804 transitions. [2020-12-23 10:49:56,237 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 7804 transitions. Word has length 54 [2020-12-23 10:49:56,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:49:56,237 INFO L481 AbstractCegarLoop]: Abstraction has 5149 states and 7804 transitions. [2020-12-23 10:49:56,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:49:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 7804 transitions. [2020-12-23 10:49:56,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-23 10:49:56,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:56,240 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] [2020-12-23 10:49:56,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:49:56,240 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:56,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:56,245 INFO L82 PathProgramCache]: Analyzing trace with hash -850826877, now seen corresponding path program 1 times [2020-12-23 10:49:56,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:56,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058484882] [2020-12-23 10:49:56,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:56,393 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 10:49:56,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058484882] [2020-12-23 10:49:56,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:49:56,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:49:56,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155226457] [2020-12-23 10:49:56,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:49:56,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:49:56,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:49:56,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:49:56,396 INFO L87 Difference]: Start difference. First operand 5149 states and 7804 transitions. Second operand 5 states. [2020-12-23 10:49:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:49:57,246 INFO L93 Difference]: Finished difference Result 10527 states and 15837 transitions. [2020-12-23 10:49:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:49:57,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-23 10:49:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:49:57,327 INFO L225 Difference]: With dead ends: 10527 [2020-12-23 10:49:57,327 INFO L226 Difference]: Without dead ends: 10525 [2020-12-23 10:49:57,335 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 10:49:57,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10525 states. [2020-12-23 10:49:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10525 to 5405. [2020-12-23 10:49:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2020-12-23 10:49:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 8060 transitions. [2020-12-23 10:49:57,919 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 8060 transitions. Word has length 55 [2020-12-23 10:49:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:49:57,921 INFO L481 AbstractCegarLoop]: Abstraction has 5405 states and 8060 transitions. [2020-12-23 10:49:57,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:49:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 8060 transitions. [2020-12-23 10:49:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 10:49:57,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:57,924 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] [2020-12-23 10:49:57,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:49:57,924 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:57,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:57,925 INFO L82 PathProgramCache]: Analyzing trace with hash -595256360, now seen corresponding path program 1 times [2020-12-23 10:49:57,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:57,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032394720] [2020-12-23 10:49:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:58,032 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 10:49:58,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032394720] [2020-12-23 10:49:58,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:49:58,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:49:58,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636639740] [2020-12-23 10:49:58,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:49:58,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:49:58,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:49:58,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:49:58,035 INFO L87 Difference]: Start difference. First operand 5405 states and 8060 transitions. Second operand 3 states. [2020-12-23 10:49:58,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:49:58,769 INFO L93 Difference]: Finished difference Result 13259 states and 19788 transitions. [2020-12-23 10:49:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:49:58,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-23 10:49:58,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:49:58,792 INFO L225 Difference]: With dead ends: 13259 [2020-12-23 10:49:58,793 INFO L226 Difference]: Without dead ends: 7881 [2020-12-23 10:49:58,803 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 10:49:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7881 states. [2020-12-23 10:49:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7881 to 7823. [2020-12-23 10:49:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7823 states. [2020-12-23 10:49:59,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 11586 transitions. [2020-12-23 10:49:59,499 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 11586 transitions. Word has length 56 [2020-12-23 10:49:59,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:49:59,500 INFO L481 AbstractCegarLoop]: Abstraction has 7823 states and 11586 transitions. [2020-12-23 10:49:59,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:49:59,500 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 11586 transitions. [2020-12-23 10:49:59,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:49:59,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:49:59,507 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:49:59,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:49:59,507 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:49:59,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:49:59,508 INFO L82 PathProgramCache]: Analyzing trace with hash -264442661, now seen corresponding path program 1 times [2020-12-23 10:49:59,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:49:59,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58189452] [2020-12-23 10:49:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:49:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:49:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:49:59,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58189452] [2020-12-23 10:49:59,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025981067] [2020-12-23 10:49:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 10:50:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:50:00,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 10:50:00,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:50:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:50:00,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:50:00,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 10:50:00,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415550028] [2020-12-23 10:50:00,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 10:50:00,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:50:00,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 10:50:00,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-23 10:50:00,507 INFO L87 Difference]: Start difference. First operand 7823 states and 11586 transitions. Second operand 12 states. [2020-12-23 10:50:17,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:50:17,479 INFO L93 Difference]: Finished difference Result 112903 states and 164848 transitions. [2020-12-23 10:50:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-12-23 10:50:17,480 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-12-23 10:50:17,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:50:17,785 INFO L225 Difference]: With dead ends: 112903 [2020-12-23 10:50:17,785 INFO L226 Difference]: Without dead ends: 105109 [2020-12-23 10:50:17,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3778 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1653, Invalid=7853, Unknown=0, NotChecked=0, Total=9506 [2020-12-23 10:50:17,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105109 states. [2020-12-23 10:50:21,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105109 to 28707. [2020-12-23 10:50:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28707 states. [2020-12-23 10:50:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28707 states to 28707 states and 41326 transitions. [2020-12-23 10:50:21,931 INFO L78 Accepts]: Start accepts. Automaton has 28707 states and 41326 transitions. Word has length 79 [2020-12-23 10:50:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:50:21,931 INFO L481 AbstractCegarLoop]: Abstraction has 28707 states and 41326 transitions. [2020-12-23 10:50:21,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 10:50:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 28707 states and 41326 transitions. [2020-12-23 10:50:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:50:21,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:50:21,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:50:22,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 10:50:22,143 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:50:22,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:50:22,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2142394861, now seen corresponding path program 1 times [2020-12-23 10:50:22,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:50:22,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901121974] [2020-12-23 10:50:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:50:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:50:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:50:22,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901121974] [2020-12-23 10:50:22,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:50:22,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:50:22,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463349444] [2020-12-23 10:50:22,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:50:22,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:50:22,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:50:22,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:50:22,224 INFO L87 Difference]: Start difference. First operand 28707 states and 41326 transitions. Second operand 3 states. [2020-12-23 10:50:26,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:50:26,041 INFO L93 Difference]: Finished difference Result 67304 states and 97202 transitions. [2020-12-23 10:50:26,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:50:26,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 10:50:26,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:50:26,132 INFO L225 Difference]: With dead ends: 67304 [2020-12-23 10:50:26,132 INFO L226 Difference]: Without dead ends: 44118 [2020-12-23 10:50:26,171 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 10:50:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44118 states. [2020-12-23 10:50:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44118 to 44116. [2020-12-23 10:50:30,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44116 states. [2020-12-23 10:50:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44116 states to 44116 states and 63104 transitions. [2020-12-23 10:50:30,265 INFO L78 Accepts]: Start accepts. Automaton has 44116 states and 63104 transitions. Word has length 79 [2020-12-23 10:50:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:50:30,266 INFO L481 AbstractCegarLoop]: Abstraction has 44116 states and 63104 transitions. [2020-12-23 10:50:30,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:50:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 44116 states and 63104 transitions. [2020-12-23 10:50:30,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:50:30,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:50:30,279 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:50:30,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:50:30,279 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:50:30,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:50:30,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1807198399, now seen corresponding path program 1 times [2020-12-23 10:50:30,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:50:30,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479336171] [2020-12-23 10:50:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:50:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:50:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:50:30,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479336171] [2020-12-23 10:50:30,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:50:30,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:50:30,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58367392] [2020-12-23 10:50:30,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:50:30,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:50:30,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:50:30,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:50:30,335 INFO L87 Difference]: Start difference. First operand 44116 states and 63104 transitions. Second operand 3 states. [2020-12-23 10:50:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:50:35,988 INFO L93 Difference]: Finished difference Result 90088 states and 128859 transitions. [2020-12-23 10:50:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:50:35,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 10:50:35,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:50:36,064 INFO L225 Difference]: With dead ends: 90088 [2020-12-23 10:50:36,065 INFO L226 Difference]: Without dead ends: 63382 [2020-12-23 10:50:36,107 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 10:50:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63382 states. [2020-12-23 10:50:41,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63382 to 58420. [2020-12-23 10:50:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58420 states. [2020-12-23 10:50:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58420 states to 58420 states and 82705 transitions. [2020-12-23 10:50:41,645 INFO L78 Accepts]: Start accepts. Automaton has 58420 states and 82705 transitions. Word has length 79 [2020-12-23 10:50:41,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:50:41,645 INFO L481 AbstractCegarLoop]: Abstraction has 58420 states and 82705 transitions. [2020-12-23 10:50:41,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:50:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand 58420 states and 82705 transitions. [2020-12-23 10:50:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:50:41,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:50:41,661 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:50:41,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:50:41,661 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:50:41,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:50:41,662 INFO L82 PathProgramCache]: Analyzing trace with hash 611086120, now seen corresponding path program 1 times [2020-12-23 10:50:41,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:50:41,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896459524] [2020-12-23 10:50:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:50:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:50:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:50:41,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896459524] [2020-12-23 10:50:41,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:50:41,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:50:41,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967712661] [2020-12-23 10:50:41,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:50:41,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:50:41,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:50:41,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:50:41,716 INFO L87 Difference]: Start difference. First operand 58420 states and 82705 transitions. Second operand 3 states. [2020-12-23 10:50:47,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:50:47,920 INFO L93 Difference]: Finished difference Result 93972 states and 132386 transitions. [2020-12-23 10:50:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:50:47,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 10:50:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:50:47,990 INFO L225 Difference]: With dead ends: 93972 [2020-12-23 10:50:47,990 INFO L226 Difference]: Without dead ends: 61947 [2020-12-23 10:50:48,013 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 10:50:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61947 states. [2020-12-23 10:50:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61947 to 59144. [2020-12-23 10:50:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59144 states. [2020-12-23 10:50:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59144 states to 59144 states and 82228 transitions. [2020-12-23 10:50:53,864 INFO L78 Accepts]: Start accepts. Automaton has 59144 states and 82228 transitions. Word has length 79 [2020-12-23 10:50:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:50:53,864 INFO L481 AbstractCegarLoop]: Abstraction has 59144 states and 82228 transitions. [2020-12-23 10:50:53,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:50:53,864 INFO L276 IsEmpty]: Start isEmpty. Operand 59144 states and 82228 transitions. [2020-12-23 10:50:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:50:53,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:50:53,877 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:50:53,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:50:53,877 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:50:53,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:50:53,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1536259716, now seen corresponding path program 1 times [2020-12-23 10:50:53,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:50:53,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847816418] [2020-12-23 10:50:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:50:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:50:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 10:50:53,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847816418] [2020-12-23 10:50:53,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:50:53,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:50:53,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302082725] [2020-12-23 10:50:53,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:50:53,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:50:53,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:50:53,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:50:53,974 INFO L87 Difference]: Start difference. First operand 59144 states and 82228 transitions. Second operand 6 states. [2020-12-23 10:51:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:51:03,212 INFO L93 Difference]: Finished difference Result 128822 states and 181079 transitions. [2020-12-23 10:51:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:51:03,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-23 10:51:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:51:03,339 INFO L225 Difference]: With dead ends: 128822 [2020-12-23 10:51:03,340 INFO L226 Difference]: Without dead ends: 101015 [2020-12-23 10:51:03,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 10:51:03,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101015 states. [2020-12-23 10:51:11,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101015 to 79697. [2020-12-23 10:51:11,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79697 states. [2020-12-23 10:51:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79697 states to 79697 states and 110745 transitions. [2020-12-23 10:51:11,844 INFO L78 Accepts]: Start accepts. Automaton has 79697 states and 110745 transitions. Word has length 79 [2020-12-23 10:51:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:51:11,845 INFO L481 AbstractCegarLoop]: Abstraction has 79697 states and 110745 transitions. [2020-12-23 10:51:11,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:51:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 79697 states and 110745 transitions. [2020-12-23 10:51:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:51:11,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:51:11,858 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:51:11,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:51:11,858 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:51:11,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:51:11,858 INFO L82 PathProgramCache]: Analyzing trace with hash -259731985, now seen corresponding path program 1 times [2020-12-23 10:51:11,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:51:11,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767579489] [2020-12-23 10:51:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:51:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:51:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 10:51:11,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767579489] [2020-12-23 10:51:11,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:51:11,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:51:11,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250433202] [2020-12-23 10:51:11,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:51:11,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:51:11,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:51:11,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:51:11,931 INFO L87 Difference]: Start difference. First operand 79697 states and 110745 transitions. Second operand 5 states. [2020-12-23 10:51:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:51:24,513 INFO L93 Difference]: Finished difference Result 200082 states and 277196 transitions. [2020-12-23 10:51:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:51:24,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-12-23 10:51:24,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:51:24,846 INFO L225 Difference]: With dead ends: 200082 [2020-12-23 10:51:24,847 INFO L226 Difference]: Without dead ends: 120509 [2020-12-23 10:51:24,912 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 10:51:25,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120509 states. [2020-12-23 10:51:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120509 to 119976. [2020-12-23 10:51:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119976 states. [2020-12-23 10:51:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119976 states to 119976 states and 165118 transitions. [2020-12-23 10:51:37,969 INFO L78 Accepts]: Start accepts. Automaton has 119976 states and 165118 transitions. Word has length 79 [2020-12-23 10:51:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:51:37,970 INFO L481 AbstractCegarLoop]: Abstraction has 119976 states and 165118 transitions. [2020-12-23 10:51:37,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:51:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 119976 states and 165118 transitions. [2020-12-23 10:51:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:51:37,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:51:37,985 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:51:37,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:51:37,986 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:51:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:51:37,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1327277398, now seen corresponding path program 1 times [2020-12-23 10:51:37,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:51:37,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145635160] [2020-12-23 10:51:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:51:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:51:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 10:51:38,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145635160] [2020-12-23 10:51:38,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:51:38,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:51:38,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383483343] [2020-12-23 10:51:38,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:51:38,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:51:38,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:51:38,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:51:38,102 INFO L87 Difference]: Start difference. First operand 119976 states and 165118 transitions. Second operand 6 states. [2020-12-23 10:51:57,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:51:57,384 INFO L93 Difference]: Finished difference Result 207040 states and 287957 transitions. [2020-12-23 10:51:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 10:51:57,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-23 10:51:57,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:51:57,819 INFO L225 Difference]: With dead ends: 207040 [2020-12-23 10:51:57,819 INFO L226 Difference]: Without dead ends: 180875 [2020-12-23 10:51:57,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:51:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180875 states. [2020-12-23 10:52:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180875 to 145392. [2020-12-23 10:52:13,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145392 states. [2020-12-23 10:52:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145392 states to 145392 states and 200384 transitions. [2020-12-23 10:52:14,094 INFO L78 Accepts]: Start accepts. Automaton has 145392 states and 200384 transitions. Word has length 79 [2020-12-23 10:52:14,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:52:14,094 INFO L481 AbstractCegarLoop]: Abstraction has 145392 states and 200384 transitions. [2020-12-23 10:52:14,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:52:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 145392 states and 200384 transitions. [2020-12-23 10:52:14,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 10:52:14,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:52:14,360 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 10:52:14,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:52:14,361 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:52:14,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:52:14,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1216138536, now seen corresponding path program 1 times [2020-12-23 10:52:14,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:52:14,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857130573] [2020-12-23 10:52:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:52:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:52:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 10:52:14,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857130573] [2020-12-23 10:52:14,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:52:14,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:52:14,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682079007] [2020-12-23 10:52:14,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:52:14,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:52:14,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:52:14,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:52:14,520 INFO L87 Difference]: Start difference. First operand 145392 states and 200384 transitions. Second operand 6 states.