/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/memsafety/lockfree-3.0.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:09:31,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:09:31,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:09:31,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:09:31,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:09:31,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:09:31,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:09:31,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:09:31,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:09:31,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:09:31,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:09:31,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:09:31,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:09:31,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:09:31,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:09:31,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:09:31,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:09:31,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:09:31,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:09:31,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:09:31,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:09:31,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:09:31,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:09:31,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:09:31,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-07 05:09:31,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-07 05:09:31,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-07 05:09:31,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-07 05:09:31,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-07 05:09:31,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-07 05:09:31,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:09:31,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:09:31,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:09:31,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:09:31,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:09:31,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:09:31,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:09:31,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:09:31,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:09:31,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:09:31,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:09:31,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:09:31,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:09:31,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:09:31,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:09:31,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:09:31,626 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:09:31,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:09:31,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:09:31,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:09:31,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:09:31,628 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:09:31,629 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:09:31,630 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:09:31,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:09:31,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:09:31,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:09:31,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:09:31,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:09:31,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:09:31,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:09:31,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:09:31,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:09:31,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:09:31,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:09:31,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:09:31,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:09:32,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:09:32,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:09:32,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:09:32,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:09:32,079 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:09:32,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/lockfree-3.0.i [2021-01-07 05:09:32,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/20d81951c/4fc64083c1f041fc9d23539a58bbdbc9/FLAGbb4bb16a7 [2021-01-07 05:09:32,979 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:09:32,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.0.i [2021-01-07 05:09:32,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/20d81951c/4fc64083c1f041fc9d23539a58bbdbc9/FLAGbb4bb16a7 [2021-01-07 05:09:33,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/20d81951c/4fc64083c1f041fc9d23539a58bbdbc9 [2021-01-07 05:09:33,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:09:33,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:09:33,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:09:33,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:09:33,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:09:33,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6645f94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33, skipping insertion in model container [2021-01-07 05:09:33,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:09:33,328 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~x1~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t1~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~S~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~res4~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~t4~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~t4~0,GLOBAL],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~garbage~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~garbage~0,GLOBAL] [2021-01-07 05:09:33,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:09:33,686 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~x1~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t1~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~x1~0,GLOBAL],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~S~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~S~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~res4~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~t4~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~t4~0,GLOBAL],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~garbage~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pc4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~garbage~0,GLOBAL] [2021-01-07 05:09:33,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:09:33,801 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:09:33,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33 WrapperNode [2021-01-07 05:09:33,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:09:33,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:09:33,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:09:33,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:09:33,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:09:33,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:09:33,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:09:33,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:09:33,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (1/1) ... [2021-01-07 05:09:33,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:09:33,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:09:33,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:09:33,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:09:33,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (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 [2021-01-07 05:09:34,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:09:34,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:09:34,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 05:09:34,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-07 05:09:34,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:09:34,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-07 05:09:34,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:09:34,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:09:34,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:09:34,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:09:34,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:09:34,602 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-07 05:09:34,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:09:34 BoogieIcfgContainer [2021-01-07 05:09:34,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:09:34,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:09:34,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:09:34,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:09:34,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:09:33" (1/3) ... [2021-01-07 05:09:34,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db1075e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:09:34, skipping insertion in model container [2021-01-07 05:09:34,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:09:33" (2/3) ... [2021-01-07 05:09:34,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db1075e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:09:34, skipping insertion in model container [2021-01-07 05:09:34,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:09:34" (3/3) ... [2021-01-07 05:09:34,617 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.0.i [2021-01-07 05:09:34,626 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:09:34,633 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2021-01-07 05:09:34,658 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-01-07 05:09:34,704 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:09:34,707 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:09:34,707 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:09:34,708 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:09:34,708 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:09:34,708 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:09:34,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:09:34,708 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:09:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2021-01-07 05:09:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 05:09:34,753 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:34,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 05:09:34,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:34,764 INFO L82 PathProgramCache]: Analyzing trace with hash 28817120, now seen corresponding path program 1 times [2021-01-07 05:09:34,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:34,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608588185] [2021-01-07 05:09:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:35,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608588185] [2021-01-07 05:09:35,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:09:35,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:09:35,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834939085] [2021-01-07 05:09:35,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-07 05:09:35,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:35,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-07 05:09:35,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:09:35,043 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2021-01-07 05:09:35,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:35,064 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2021-01-07 05:09:35,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-07 05:09:35,068 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-01-07 05:09:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:35,089 INFO L225 Difference]: With dead ends: 62 [2021-01-07 05:09:35,090 INFO L226 Difference]: Without dead ends: 60 [2021-01-07 05:09:35,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:09:35,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-07 05:09:35,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-01-07 05:09:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-01-07 05:09:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-01-07 05:09:35,172 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 5 [2021-01-07 05:09:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:35,173 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-01-07 05:09:35,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-07 05:09:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2021-01-07 05:09:35,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:09:35,175 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:35,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:35,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:09:35,177 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:35,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:35,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1806850988, now seen corresponding path program 1 times [2021-01-07 05:09:35,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:35,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866803046] [2021-01-07 05:09:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:35,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866803046] [2021-01-07 05:09:35,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:09:35,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:09:35,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049614265] [2021-01-07 05:09:35,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:09:35,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:35,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:09:35,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:09:35,240 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 3 states. [2021-01-07 05:09:35,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:35,262 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2021-01-07 05:09:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:09:35,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:09:35,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:35,265 INFO L225 Difference]: With dead ends: 61 [2021-01-07 05:09:35,265 INFO L226 Difference]: Without dead ends: 61 [2021-01-07 05:09:35,266 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 [2021-01-07 05:09:35,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-07 05:09:35,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-01-07 05:09:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-07 05:09:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2021-01-07 05:09:35,275 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 7 [2021-01-07 05:09:35,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:35,275 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2021-01-07 05:09:35,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:09:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2021-01-07 05:09:35,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:09:35,277 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:35,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:35,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:09:35,277 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:35,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:35,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1806910570, now seen corresponding path program 1 times [2021-01-07 05:09:35,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:35,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207701608] [2021-01-07 05:09:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:35,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207701608] [2021-01-07 05:09:35,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:09:35,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:09:35,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323410079] [2021-01-07 05:09:35,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:09:35,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:35,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:09:35,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:09:35,362 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 3 states. [2021-01-07 05:09:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:35,439 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2021-01-07 05:09:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:09:35,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:09:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:35,442 INFO L225 Difference]: With dead ends: 107 [2021-01-07 05:09:35,444 INFO L226 Difference]: Without dead ends: 107 [2021-01-07 05:09:35,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:09:35,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-07 05:09:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2021-01-07 05:09:35,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-07 05:09:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 133 transitions. [2021-01-07 05:09:35,471 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 133 transitions. Word has length 7 [2021-01-07 05:09:35,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:35,471 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 133 transitions. [2021-01-07 05:09:35,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:09:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 133 transitions. [2021-01-07 05:09:35,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:09:35,474 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:35,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:35,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:09:35,475 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:35,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:35,475 INFO L82 PathProgramCache]: Analyzing trace with hash 177749355, now seen corresponding path program 1 times [2021-01-07 05:09:35,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:35,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043736727] [2021-01-07 05:09:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:35,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043736727] [2021-01-07 05:09:35,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:09:35,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:09:35,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132460791] [2021-01-07 05:09:35,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:09:35,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:35,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:09:35,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:09:35,554 INFO L87 Difference]: Start difference. First operand 89 states and 133 transitions. Second operand 4 states. [2021-01-07 05:09:35,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:35,616 INFO L93 Difference]: Finished difference Result 97 states and 142 transitions. [2021-01-07 05:09:35,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:09:35,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-07 05:09:35,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:35,619 INFO L225 Difference]: With dead ends: 97 [2021-01-07 05:09:35,619 INFO L226 Difference]: Without dead ends: 97 [2021-01-07 05:09:35,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:09:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-07 05:09:35,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2021-01-07 05:09:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-01-07 05:09:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 135 transitions. [2021-01-07 05:09:35,633 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 135 transitions. Word has length 8 [2021-01-07 05:09:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:35,633 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 135 transitions. [2021-01-07 05:09:35,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:09:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 135 transitions. [2021-01-07 05:09:35,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:09:35,634 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:35,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:35,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:09:35,635 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:35,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:35,639 INFO L82 PathProgramCache]: Analyzing trace with hash 179651426, now seen corresponding path program 1 times [2021-01-07 05:09:35,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:35,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801593250] [2021-01-07 05:09:35,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:35,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801593250] [2021-01-07 05:09:35,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:09:35,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:09:35,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111396930] [2021-01-07 05:09:35,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:09:35,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:35,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:09:35,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:09:35,682 INFO L87 Difference]: Start difference. First operand 91 states and 135 transitions. Second operand 3 states. [2021-01-07 05:09:35,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:35,766 INFO L93 Difference]: Finished difference Result 169 states and 253 transitions. [2021-01-07 05:09:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:09:35,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-01-07 05:09:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:35,768 INFO L225 Difference]: With dead ends: 169 [2021-01-07 05:09:35,769 INFO L226 Difference]: Without dead ends: 166 [2021-01-07 05:09:35,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:09:35,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-01-07 05:09:35,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 145. [2021-01-07 05:09:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-01-07 05:09:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 238 transitions. [2021-01-07 05:09:35,783 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 238 transitions. Word has length 8 [2021-01-07 05:09:35,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:35,783 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 238 transitions. [2021-01-07 05:09:35,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:09:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 238 transitions. [2021-01-07 05:09:35,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:09:35,784 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:35,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:35,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:09:35,785 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:35,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:35,786 INFO L82 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2021-01-07 05:09:35,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:35,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667483612] [2021-01-07 05:09:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:35,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667483612] [2021-01-07 05:09:35,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:09:35,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:09:35,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421161919] [2021-01-07 05:09:35,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:09:35,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:35,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:09:35,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:09:35,838 INFO L87 Difference]: Start difference. First operand 145 states and 238 transitions. Second operand 3 states. [2021-01-07 05:09:35,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:35,955 INFO L93 Difference]: Finished difference Result 219 states and 343 transitions. [2021-01-07 05:09:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:09:35,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-01-07 05:09:35,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:35,958 INFO L225 Difference]: With dead ends: 219 [2021-01-07 05:09:35,959 INFO L226 Difference]: Without dead ends: 219 [2021-01-07 05:09:35,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:09:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-01-07 05:09:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 196. [2021-01-07 05:09:35,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-01-07 05:09:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 328 transitions. [2021-01-07 05:09:35,990 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 328 transitions. Word has length 8 [2021-01-07 05:09:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:35,990 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 328 transitions. [2021-01-07 05:09:35,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:09:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 328 transitions. [2021-01-07 05:09:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:09:35,993 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:35,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:35,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:09:35,994 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:35,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:35,995 INFO L82 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2021-01-07 05:09:35,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:35,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802405365] [2021-01-07 05:09:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:36,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:36,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802405365] [2021-01-07 05:09:36,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:09:36,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:09:36,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705273074] [2021-01-07 05:09:36,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:09:36,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:36,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:09:36,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:09:36,094 INFO L87 Difference]: Start difference. First operand 196 states and 328 transitions. Second operand 3 states. [2021-01-07 05:09:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:36,147 INFO L93 Difference]: Finished difference Result 214 states and 334 transitions. [2021-01-07 05:09:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:09:36,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-01-07 05:09:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:36,149 INFO L225 Difference]: With dead ends: 214 [2021-01-07 05:09:36,149 INFO L226 Difference]: Without dead ends: 214 [2021-01-07 05:09:36,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:09:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-01-07 05:09:36,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 194. [2021-01-07 05:09:36,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-01-07 05:09:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 320 transitions. [2021-01-07 05:09:36,160 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 320 transitions. Word has length 8 [2021-01-07 05:09:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:36,160 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 320 transitions. [2021-01-07 05:09:36,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:09:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 320 transitions. [2021-01-07 05:09:36,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:09:36,161 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:36,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:36,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:09:36,162 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:36,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:36,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2021-01-07 05:09:36,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:36,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111535576] [2021-01-07 05:09:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:36,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111535576] [2021-01-07 05:09:36,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:09:36,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:09:36,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994615925] [2021-01-07 05:09:36,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:09:36,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:36,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:09:36,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:09:36,195 INFO L87 Difference]: Start difference. First operand 194 states and 320 transitions. Second operand 4 states. [2021-01-07 05:09:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:36,233 INFO L93 Difference]: Finished difference Result 251 states and 352 transitions. [2021-01-07 05:09:36,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:09:36,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:09:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:36,236 INFO L225 Difference]: With dead ends: 251 [2021-01-07 05:09:36,236 INFO L226 Difference]: Without dead ends: 251 [2021-01-07 05:09:36,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:09:36,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-01-07 05:09:36,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 153. [2021-01-07 05:09:36,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-01-07 05:09:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 244 transitions. [2021-01-07 05:09:36,243 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 244 transitions. Word has length 9 [2021-01-07 05:09:36,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:36,244 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 244 transitions. [2021-01-07 05:09:36,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:09:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 244 transitions. [2021-01-07 05:09:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 05:09:36,245 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:36,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:36,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:09:36,245 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:36,246 INFO L82 PathProgramCache]: Analyzing trace with hash 844095278, now seen corresponding path program 1 times [2021-01-07 05:09:36,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:36,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059086330] [2021-01-07 05:09:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:36,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059086330] [2021-01-07 05:09:36,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:09:36,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:09:36,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426779284] [2021-01-07 05:09:36,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:09:36,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:36,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:09:36,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:09:36,277 INFO L87 Difference]: Start difference. First operand 153 states and 244 transitions. Second operand 4 states. [2021-01-07 05:09:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:36,313 INFO L93 Difference]: Finished difference Result 330 states and 496 transitions. [2021-01-07 05:09:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:09:36,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-07 05:09:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:36,316 INFO L225 Difference]: With dead ends: 330 [2021-01-07 05:09:36,316 INFO L226 Difference]: Without dead ends: 330 [2021-01-07 05:09:36,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:09:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-01-07 05:09:36,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 214. [2021-01-07 05:09:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-01-07 05:09:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 336 transitions. [2021-01-07 05:09:36,324 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 336 transitions. Word has length 10 [2021-01-07 05:09:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:36,325 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 336 transitions. [2021-01-07 05:09:36,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:09:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 336 transitions. [2021-01-07 05:09:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:09:36,326 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:36,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:36,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-07 05:09:36,327 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:36,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:36,327 INFO L82 PathProgramCache]: Analyzing trace with hash -359933169, now seen corresponding path program 1 times [2021-01-07 05:09:36,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:36,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623833659] [2021-01-07 05:09:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:36,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623833659] [2021-01-07 05:09:36,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626118715] [2021-01-07 05:09:36,383 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 [2021-01-07 05:09:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:36,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:09:36,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:36,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:36,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:09:36,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509357277] [2021-01-07 05:09:36,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:09:36,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:36,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:09:36,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:09:36,605 INFO L87 Difference]: Start difference. First operand 214 states and 336 transitions. Second operand 6 states. [2021-01-07 05:09:36,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:36,676 INFO L93 Difference]: Finished difference Result 218 states and 326 transitions. [2021-01-07 05:09:36,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:09:36,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-07 05:09:36,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:36,679 INFO L225 Difference]: With dead ends: 218 [2021-01-07 05:09:36,679 INFO L226 Difference]: Without dead ends: 218 [2021-01-07 05:09:36,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:09:36,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-01-07 05:09:36,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2021-01-07 05:09:36,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-01-07 05:09:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 324 transitions. [2021-01-07 05:09:36,687 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 324 transitions. Word has length 15 [2021-01-07 05:09:36,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:36,688 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 324 transitions. [2021-01-07 05:09:36,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:09:36,688 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 324 transitions. [2021-01-07 05:09:36,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:09:36,689 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:36,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:36,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-07 05:09:36,903 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:36,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:36,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1076944598, now seen corresponding path program 1 times [2021-01-07 05:09:36,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:36,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718145272] [2021-01-07 05:09:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:36,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718145272] [2021-01-07 05:09:36,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718351630] [2021-01-07 05:09:36,953 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:37,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:09:37,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:37,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:37,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-07 05:09:37,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333791735] [2021-01-07 05:09:37,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:09:37,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:37,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:09:37,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:09:37,077 INFO L87 Difference]: Start difference. First operand 210 states and 324 transitions. Second operand 7 states. [2021-01-07 05:09:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:37,163 INFO L93 Difference]: Finished difference Result 475 states and 688 transitions. [2021-01-07 05:09:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:09:37,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-01-07 05:09:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:37,167 INFO L225 Difference]: With dead ends: 475 [2021-01-07 05:09:37,167 INFO L226 Difference]: Without dead ends: 475 [2021-01-07 05:09:37,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:09:37,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-01-07 05:09:37,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 293. [2021-01-07 05:09:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-01-07 05:09:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 446 transitions. [2021-01-07 05:09:37,177 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 446 transitions. Word has length 15 [2021-01-07 05:09:37,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:37,178 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 446 transitions. [2021-01-07 05:09:37,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:09:37,178 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 446 transitions. [2021-01-07 05:09:37,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:09:37,179 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:37,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:37,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:37,394 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:37,395 INFO L82 PathProgramCache]: Analyzing trace with hash 549808174, now seen corresponding path program 2 times [2021-01-07 05:09:37,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:37,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089116758] [2021-01-07 05:09:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:09:37,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089116758] [2021-01-07 05:09:37,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906073295] [2021-01-07 05:09:37,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:37,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:09:37,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:37,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:09:37,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:37,580 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:09:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:37,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:37,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2021-01-07 05:09:37,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809431961] [2021-01-07 05:09:37,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:09:37,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:37,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:09:37,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:09:37,597 INFO L87 Difference]: Start difference. First operand 293 states and 446 transitions. Second operand 8 states. [2021-01-07 05:09:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:37,738 INFO L93 Difference]: Finished difference Result 475 states and 676 transitions. [2021-01-07 05:09:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:09:37,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2021-01-07 05:09:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:37,741 INFO L225 Difference]: With dead ends: 475 [2021-01-07 05:09:37,742 INFO L226 Difference]: Without dead ends: 475 [2021-01-07 05:09:37,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:09:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-01-07 05:09:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 293. [2021-01-07 05:09:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-01-07 05:09:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 434 transitions. [2021-01-07 05:09:37,765 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 434 transitions. Word has length 20 [2021-01-07 05:09:37,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:37,765 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 434 transitions. [2021-01-07 05:09:37,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:09:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 434 transitions. [2021-01-07 05:09:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:09:37,767 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:37,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:37,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:09:37,982 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:37,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1068746165, now seen corresponding path program 1 times [2021-01-07 05:09:37,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:37,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384587977] [2021-01-07 05:09:37,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:38,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384587977] [2021-01-07 05:09:38,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028796900] [2021-01-07 05:09:38,036 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:38,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:09:38,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:38,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:38,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-01-07 05:09:38,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627955514] [2021-01-07 05:09:38,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:09:38,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:38,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:09:38,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:09:38,163 INFO L87 Difference]: Start difference. First operand 293 states and 434 transitions. Second operand 4 states. [2021-01-07 05:09:38,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:38,248 INFO L93 Difference]: Finished difference Result 852 states and 1250 transitions. [2021-01-07 05:09:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:09:38,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-01-07 05:09:38,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:38,253 INFO L225 Difference]: With dead ends: 852 [2021-01-07 05:09:38,254 INFO L226 Difference]: Without dead ends: 852 [2021-01-07 05:09:38,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:09:38,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-01-07 05:09:38,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 737. [2021-01-07 05:09:38,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2021-01-07 05:09:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1108 transitions. [2021-01-07 05:09:38,273 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1108 transitions. Word has length 22 [2021-01-07 05:09:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:38,274 INFO L481 AbstractCegarLoop]: Abstraction has 737 states and 1108 transitions. [2021-01-07 05:09:38,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:09:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1108 transitions. [2021-01-07 05:09:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:09:38,275 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:38,275 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:38,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:38,489 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:38,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:38,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1500331496, now seen corresponding path program 1 times [2021-01-07 05:09:38,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:38,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124600297] [2021-01-07 05:09:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:38,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124600297] [2021-01-07 05:09:38,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583591203] [2021-01-07 05:09:38,589 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:38,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:09:38,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:38,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:38,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-07 05:09:38,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59855406] [2021-01-07 05:09:38,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:09:38,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:38,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:09:38,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:09:38,709 INFO L87 Difference]: Start difference. First operand 737 states and 1108 transitions. Second operand 7 states. [2021-01-07 05:09:38,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:38,797 INFO L93 Difference]: Finished difference Result 1279 states and 1808 transitions. [2021-01-07 05:09:38,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:09:38,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2021-01-07 05:09:38,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:38,804 INFO L225 Difference]: With dead ends: 1279 [2021-01-07 05:09:38,805 INFO L226 Difference]: Without dead ends: 1279 [2021-01-07 05:09:38,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:09:38,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-01-07 05:09:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1031. [2021-01-07 05:09:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2021-01-07 05:09:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1506 transitions. [2021-01-07 05:09:38,832 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1506 transitions. Word has length 25 [2021-01-07 05:09:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:38,832 INFO L481 AbstractCegarLoop]: Abstraction has 1031 states and 1506 transitions. [2021-01-07 05:09:38,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:09:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1506 transitions. [2021-01-07 05:09:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:09:38,833 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:38,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:39,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-07 05:09:39,050 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:39,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:39,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1328162967, now seen corresponding path program 1 times [2021-01-07 05:09:39,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:39,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895657220] [2021-01-07 05:09:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:09:39,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895657220] [2021-01-07 05:09:39,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538534364] [2021-01-07 05:09:39,173 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:39,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:09:39,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:39,290 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:09:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:09:39,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:39,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-01-07 05:09:39,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622527801] [2021-01-07 05:09:39,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:09:39,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:39,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:09:39,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:09:39,310 INFO L87 Difference]: Start difference. First operand 1031 states and 1506 transitions. Second operand 6 states. [2021-01-07 05:09:39,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:39,407 INFO L93 Difference]: Finished difference Result 813 states and 1115 transitions. [2021-01-07 05:09:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:09:39,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-01-07 05:09:39,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:39,411 INFO L225 Difference]: With dead ends: 813 [2021-01-07 05:09:39,412 INFO L226 Difference]: Without dead ends: 813 [2021-01-07 05:09:39,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:09:39,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-01-07 05:09:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 454. [2021-01-07 05:09:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2021-01-07 05:09:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 638 transitions. [2021-01-07 05:09:39,428 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 638 transitions. Word has length 25 [2021-01-07 05:09:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:39,429 INFO L481 AbstractCegarLoop]: Abstraction has 454 states and 638 transitions. [2021-01-07 05:09:39,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:09:39,429 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 638 transitions. [2021-01-07 05:09:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-07 05:09:39,431 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:39,431 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:39,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:39,647 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:39,648 INFO L82 PathProgramCache]: Analyzing trace with hash -694766621, now seen corresponding path program 1 times [2021-01-07 05:09:39,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:39,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125395830] [2021-01-07 05:09:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:09:39,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125395830] [2021-01-07 05:09:39,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381785879] [2021-01-07 05:09:39,757 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:39,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:09:39,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:39,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:39,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-01-07 05:09:39,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44518143] [2021-01-07 05:09:39,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:09:39,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:39,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:09:39,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:09:39,903 INFO L87 Difference]: Start difference. First operand 454 states and 638 transitions. Second operand 9 states. [2021-01-07 05:09:40,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:40,099 INFO L93 Difference]: Finished difference Result 960 states and 1274 transitions. [2021-01-07 05:09:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:09:40,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-01-07 05:09:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:40,104 INFO L225 Difference]: With dead ends: 960 [2021-01-07 05:09:40,105 INFO L226 Difference]: Without dead ends: 960 [2021-01-07 05:09:40,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:09:40,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-01-07 05:09:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 590. [2021-01-07 05:09:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2021-01-07 05:09:40,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 830 transitions. [2021-01-07 05:09:40,120 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 830 transitions. Word has length 32 [2021-01-07 05:09:40,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:40,121 INFO L481 AbstractCegarLoop]: Abstraction has 590 states and 830 transitions. [2021-01-07 05:09:40,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:09:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 830 transitions. [2021-01-07 05:09:40,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-07 05:09:40,122 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:40,122 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:40,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-07 05:09:40,336 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1206576598, now seen corresponding path program 1 times [2021-01-07 05:09:40,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:40,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935280319] [2021-01-07 05:09:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-07 05:09:40,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935280319] [2021-01-07 05:09:40,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625428576] [2021-01-07 05:09:40,406 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:40,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:09:40,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:40,506 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:09:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-07 05:09:40,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:40,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-01-07 05:09:40,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930492285] [2021-01-07 05:09:40,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:09:40,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:40,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:09:40,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:09:40,532 INFO L87 Difference]: Start difference. First operand 590 states and 830 transitions. Second operand 7 states. [2021-01-07 05:09:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:40,653 INFO L93 Difference]: Finished difference Result 1284 states and 1760 transitions. [2021-01-07 05:09:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:09:40,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2021-01-07 05:09:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:40,660 INFO L225 Difference]: With dead ends: 1284 [2021-01-07 05:09:40,660 INFO L226 Difference]: Without dead ends: 1284 [2021-01-07 05:09:40,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:09:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-01-07 05:09:40,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 699. [2021-01-07 05:09:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2021-01-07 05:09:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1004 transitions. [2021-01-07 05:09:40,679 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1004 transitions. Word has length 39 [2021-01-07 05:09:40,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:40,680 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 1004 transitions. [2021-01-07 05:09:40,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:09:40,680 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1004 transitions. [2021-01-07 05:09:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-07 05:09:40,681 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:40,681 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:40,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-07 05:09:40,896 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:40,897 INFO L82 PathProgramCache]: Analyzing trace with hash 2038387385, now seen corresponding path program 1 times [2021-01-07 05:09:40,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:40,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952603198] [2021-01-07 05:09:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 31 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:09:40,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952603198] [2021-01-07 05:09:40,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176596042] [2021-01-07 05:09:40,991 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:41,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-07 05:09:41,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:41,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:41,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-01-07 05:09:41,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489045372] [2021-01-07 05:09:41,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:09:41,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:41,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:09:41,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:09:41,167 INFO L87 Difference]: Start difference. First operand 699 states and 1004 transitions. Second operand 14 states. [2021-01-07 05:09:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:41,718 INFO L93 Difference]: Finished difference Result 1992 states and 2633 transitions. [2021-01-07 05:09:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-07 05:09:41,718 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2021-01-07 05:09:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:41,728 INFO L225 Difference]: With dead ends: 1992 [2021-01-07 05:09:41,728 INFO L226 Difference]: Without dead ends: 1992 [2021-01-07 05:09:41,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:09:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-01-07 05:09:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 980. [2021-01-07 05:09:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2021-01-07 05:09:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1343 transitions. [2021-01-07 05:09:41,756 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1343 transitions. Word has length 43 [2021-01-07 05:09:41,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:41,756 INFO L481 AbstractCegarLoop]: Abstraction has 980 states and 1343 transitions. [2021-01-07 05:09:41,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:09:41,756 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1343 transitions. [2021-01-07 05:09:41,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-07 05:09:41,757 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:41,757 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:41,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-07 05:09:41,972 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:41,973 INFO L82 PathProgramCache]: Analyzing trace with hash -213326138, now seen corresponding path program 1 times [2021-01-07 05:09:41,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:41,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642732571] [2021-01-07 05:09:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:09:42,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642732571] [2021-01-07 05:09:42,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895870666] [2021-01-07 05:09:42,089 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:42,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:09:42,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:42,211 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:09:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 48 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-07 05:09:42,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:42,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2021-01-07 05:09:42,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205418985] [2021-01-07 05:09:42,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:09:42,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:42,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:09:42,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:09:42,277 INFO L87 Difference]: Start difference. First operand 980 states and 1343 transitions. Second operand 9 states. [2021-01-07 05:09:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:42,506 INFO L93 Difference]: Finished difference Result 2265 states and 3046 transitions. [2021-01-07 05:09:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:09:42,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-01-07 05:09:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:42,517 INFO L225 Difference]: With dead ends: 2265 [2021-01-07 05:09:42,517 INFO L226 Difference]: Without dead ends: 2265 [2021-01-07 05:09:42,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:09:42,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2021-01-07 05:09:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1234. [2021-01-07 05:09:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2021-01-07 05:09:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1736 transitions. [2021-01-07 05:09:42,551 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1736 transitions. Word has length 48 [2021-01-07 05:09:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:42,551 INFO L481 AbstractCegarLoop]: Abstraction has 1234 states and 1736 transitions. [2021-01-07 05:09:42,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:09:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1736 transitions. [2021-01-07 05:09:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-07 05:09:42,553 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:42,553 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:42,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:42,768 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:42,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:42,769 INFO L82 PathProgramCache]: Analyzing trace with hash -214544417, now seen corresponding path program 1 times [2021-01-07 05:09:42,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:42,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877495059] [2021-01-07 05:09:42,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 33 proven. 39 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-01-07 05:09:42,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877495059] [2021-01-07 05:09:42,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867173396] [2021-01-07 05:09:42,837 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:42,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:09:42,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 33 proven. 39 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-01-07 05:09:43,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:43,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-01-07 05:09:43,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292246416] [2021-01-07 05:09:43,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:09:43,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:43,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:09:43,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:09:43,003 INFO L87 Difference]: Start difference. First operand 1234 states and 1736 transitions. Second operand 5 states. [2021-01-07 05:09:43,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:43,084 INFO L93 Difference]: Finished difference Result 2083 states and 2961 transitions. [2021-01-07 05:09:43,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:09:43,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2021-01-07 05:09:43,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:43,095 INFO L225 Difference]: With dead ends: 2083 [2021-01-07 05:09:43,095 INFO L226 Difference]: Without dead ends: 2083 [2021-01-07 05:09:43,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:09:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-01-07 05:09:43,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2073. [2021-01-07 05:09:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2021-01-07 05:09:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2957 transitions. [2021-01-07 05:09:43,140 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2957 transitions. Word has length 58 [2021-01-07 05:09:43,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:43,141 INFO L481 AbstractCegarLoop]: Abstraction has 2073 states and 2957 transitions. [2021-01-07 05:09:43,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:09:43,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2957 transitions. [2021-01-07 05:09:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-07 05:09:43,142 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:43,142 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:43,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:43,357 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:43,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:43,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1583318006, now seen corresponding path program 1 times [2021-01-07 05:09:43,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:43,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687554414] [2021-01-07 05:09:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 78 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-01-07 05:09:43,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687554414] [2021-01-07 05:09:43,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808300541] [2021-01-07 05:09:43,484 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:43,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-07 05:09:43,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:43,587 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:09:43,665 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:09:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 83 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-07 05:09:43,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:43,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2021-01-07 05:09:43,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438557296] [2021-01-07 05:09:43,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:09:43,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:43,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:09:43,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:09:43,684 INFO L87 Difference]: Start difference. First operand 2073 states and 2957 transitions. Second operand 9 states. [2021-01-07 05:09:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:44,042 INFO L93 Difference]: Finished difference Result 2760 states and 3770 transitions. [2021-01-07 05:09:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:09:44,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2021-01-07 05:09:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:44,056 INFO L225 Difference]: With dead ends: 2760 [2021-01-07 05:09:44,056 INFO L226 Difference]: Without dead ends: 2760 [2021-01-07 05:09:44,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:09:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-01-07 05:09:44,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1490. [2021-01-07 05:09:44,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2021-01-07 05:09:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2084 transitions. [2021-01-07 05:09:44,093 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2084 transitions. Word has length 59 [2021-01-07 05:09:44,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:44,094 INFO L481 AbstractCegarLoop]: Abstraction has 1490 states and 2084 transitions. [2021-01-07 05:09:44,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:09:44,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2084 transitions. [2021-01-07 05:09:44,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-07 05:09:44,095 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:44,095 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:44,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:44,309 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:44,310 INFO L82 PathProgramCache]: Analyzing trace with hash -988191337, now seen corresponding path program 1 times [2021-01-07 05:09:44,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:44,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638639105] [2021-01-07 05:09:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-01-07 05:09:44,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638639105] [2021-01-07 05:09:44,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961171621] [2021-01-07 05:09:44,441 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:44,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-07 05:09:44,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-01-07 05:09:44,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:44,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-01-07 05:09:44,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315018565] [2021-01-07 05:09:44,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:09:44,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:44,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:09:44,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:09:44,677 INFO L87 Difference]: Start difference. First operand 1490 states and 2084 transitions. Second operand 9 states. [2021-01-07 05:09:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:44,944 INFO L93 Difference]: Finished difference Result 3321 states and 4587 transitions. [2021-01-07 05:09:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:09:44,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2021-01-07 05:09:44,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:44,961 INFO L225 Difference]: With dead ends: 3321 [2021-01-07 05:09:44,961 INFO L226 Difference]: Without dead ends: 3321 [2021-01-07 05:09:44,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:09:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2021-01-07 05:09:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 2860. [2021-01-07 05:09:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2860 states. [2021-01-07 05:09:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4012 transitions. [2021-01-07 05:09:45,019 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4012 transitions. Word has length 62 [2021-01-07 05:09:45,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:45,020 INFO L481 AbstractCegarLoop]: Abstraction has 2860 states and 4012 transitions. [2021-01-07 05:09:45,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:09:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4012 transitions. [2021-01-07 05:09:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-07 05:09:45,021 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:45,021 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:45,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:09:45,235 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:45,236 INFO L82 PathProgramCache]: Analyzing trace with hash -988191338, now seen corresponding path program 1 times [2021-01-07 05:09:45,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:45,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118551976] [2021-01-07 05:09:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-01-07 05:09:45,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118551976] [2021-01-07 05:09:45,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712165548] [2021-01-07 05:09:45,298 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:45,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:09:45,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:45,418 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:09:45,419 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:45,421 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:45,422 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:45,422 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 05:09:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-01-07 05:09:45,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:45,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-01-07 05:09:45,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084706128] [2021-01-07 05:09:45,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:09:45,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:45,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:09:45,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:09:45,468 INFO L87 Difference]: Start difference. First operand 2860 states and 4012 transitions. Second operand 5 states. [2021-01-07 05:09:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:45,674 INFO L93 Difference]: Finished difference Result 3999 states and 5539 transitions. [2021-01-07 05:09:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:09:45,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2021-01-07 05:09:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:45,695 INFO L225 Difference]: With dead ends: 3999 [2021-01-07 05:09:45,695 INFO L226 Difference]: Without dead ends: 3999 [2021-01-07 05:09:45,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:09:45,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2021-01-07 05:09:45,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3545. [2021-01-07 05:09:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2021-01-07 05:09:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4968 transitions. [2021-01-07 05:09:45,774 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4968 transitions. Word has length 62 [2021-01-07 05:09:45,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:45,775 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4968 transitions. [2021-01-07 05:09:45,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:09:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4968 transitions. [2021-01-07 05:09:45,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-07 05:09:45,778 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:45,778 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 8, 6, 5, 4, 3, 3, 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] [2021-01-07 05:09:45,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:45,991 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:45,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:45,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1256876840, now seen corresponding path program 1 times [2021-01-07 05:09:45,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:45,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016742876] [2021-01-07 05:09:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-01-07 05:09:46,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016742876] [2021-01-07 05:09:46,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:09:46,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:09:46,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757683519] [2021-01-07 05:09:46,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:09:46,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:46,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:09:46,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:09:46,056 INFO L87 Difference]: Start difference. First operand 3545 states and 4968 transitions. Second operand 6 states. [2021-01-07 05:09:46,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:46,179 INFO L93 Difference]: Finished difference Result 7220 states and 10035 transitions. [2021-01-07 05:09:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:09:46,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2021-01-07 05:09:46,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:46,210 INFO L225 Difference]: With dead ends: 7220 [2021-01-07 05:09:46,210 INFO L226 Difference]: Without dead ends: 7220 [2021-01-07 05:09:46,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:09:46,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7220 states. [2021-01-07 05:09:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7220 to 3889. [2021-01-07 05:09:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3889 states. [2021-01-07 05:09:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 5510 transitions. [2021-01-07 05:09:46,324 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 5510 transitions. Word has length 79 [2021-01-07 05:09:46,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:46,324 INFO L481 AbstractCegarLoop]: Abstraction has 3889 states and 5510 transitions. [2021-01-07 05:09:46,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:09:46,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 5510 transitions. [2021-01-07 05:09:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-07 05:09:46,328 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:46,328 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 9, 6, 5, 4, 4, 3, 3, 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] [2021-01-07 05:09:46,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-07 05:09:46,329 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:46,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:46,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1007960541, now seen corresponding path program 1 times [2021-01-07 05:09:46,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:46,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676826694] [2021-01-07 05:09:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 71 proven. 121 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-01-07 05:09:46,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676826694] [2021-01-07 05:09:46,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548099836] [2021-01-07 05:09:46,448 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:46,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:09:46,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-01-07 05:09:46,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:09:46,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-01-07 05:09:46,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043054188] [2021-01-07 05:09:46,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:09:46,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:46,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:09:46,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:09:46,631 INFO L87 Difference]: Start difference. First operand 3889 states and 5510 transitions. Second operand 3 states. [2021-01-07 05:09:46,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:46,665 INFO L93 Difference]: Finished difference Result 4356 states and 6011 transitions. [2021-01-07 05:09:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:09:46,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-01-07 05:09:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:46,675 INFO L225 Difference]: With dead ends: 4356 [2021-01-07 05:09:46,676 INFO L226 Difference]: Without dead ends: 4356 [2021-01-07 05:09:46,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:09:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2021-01-07 05:09:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 3943. [2021-01-07 05:09:46,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3943 states. [2021-01-07 05:09:46,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 5490 transitions. [2021-01-07 05:09:46,749 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 5490 transitions. Word has length 86 [2021-01-07 05:09:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:46,749 INFO L481 AbstractCegarLoop]: Abstraction has 3943 states and 5490 transitions. [2021-01-07 05:09:46,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:09:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 5490 transitions. [2021-01-07 05:09:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-01-07 05:09:46,753 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:46,753 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 9, 6, 5, 4, 4, 3, 3, 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] [2021-01-07 05:09:46,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-07 05:09:46,967 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:46,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:46,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1571256936, now seen corresponding path program 1 times [2021-01-07 05:09:46,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:46,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883144996] [2021-01-07 05:09:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 74 proven. 3 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-01-07 05:09:47,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883144996] [2021-01-07 05:09:47,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189999590] [2021-01-07 05:09:47,055 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:47,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:09:47,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 69 proven. 64 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-01-07 05:09:47,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:47,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-01-07 05:09:47,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424478812] [2021-01-07 05:09:47,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:09:47,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:47,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:09:47,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:09:47,288 INFO L87 Difference]: Start difference. First operand 3943 states and 5490 transitions. Second operand 12 states. [2021-01-07 05:09:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:47,594 INFO L93 Difference]: Finished difference Result 4431 states and 5698 transitions. [2021-01-07 05:09:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 05:09:47,594 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2021-01-07 05:09:47,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:47,603 INFO L225 Difference]: With dead ends: 4431 [2021-01-07 05:09:47,604 INFO L226 Difference]: Without dead ends: 4431 [2021-01-07 05:09:47,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:09:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4431 states. [2021-01-07 05:09:47,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4431 to 2469. [2021-01-07 05:09:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2021-01-07 05:09:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3184 transitions. [2021-01-07 05:09:47,652 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3184 transitions. Word has length 88 [2021-01-07 05:09:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:47,653 INFO L481 AbstractCegarLoop]: Abstraction has 2469 states and 3184 transitions. [2021-01-07 05:09:47,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:09:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3184 transitions. [2021-01-07 05:09:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-01-07 05:09:47,656 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:47,657 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 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] [2021-01-07 05:09:47,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:47,871 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:47,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:47,872 INFO L82 PathProgramCache]: Analyzing trace with hash -796469580, now seen corresponding path program 1 times [2021-01-07 05:09:47,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:47,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652989465] [2021-01-07 05:09:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-01-07 05:09:47,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652989465] [2021-01-07 05:09:47,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273262774] [2021-01-07 05:09:47,942 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:48,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:09:48,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:48,063 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:09:48,091 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:48,093 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:48,094 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:48,094 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 05:09:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-01-07 05:09:48,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:48,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 5 [2021-01-07 05:09:48,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698702035] [2021-01-07 05:09:48,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:09:48,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:48,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:09:48,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:09:48,201 INFO L87 Difference]: Start difference. First operand 2469 states and 3184 transitions. Second operand 6 states. [2021-01-07 05:09:48,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:48,517 INFO L93 Difference]: Finished difference Result 3669 states and 4677 transitions. [2021-01-07 05:09:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:09:48,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2021-01-07 05:09:48,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:48,526 INFO L225 Difference]: With dead ends: 3669 [2021-01-07 05:09:48,526 INFO L226 Difference]: Without dead ends: 3669 [2021-01-07 05:09:48,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:09:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2021-01-07 05:09:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 2470. [2021-01-07 05:09:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2470 states. [2021-01-07 05:09:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3187 transitions. [2021-01-07 05:09:48,571 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3187 transitions. Word has length 100 [2021-01-07 05:09:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:48,572 INFO L481 AbstractCegarLoop]: Abstraction has 2470 states and 3187 transitions. [2021-01-07 05:09:48,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:09:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3187 transitions. [2021-01-07 05:09:48,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-01-07 05:09:48,575 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:48,575 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 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] [2021-01-07 05:09:48,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:09:48,791 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:48,791 INFO L82 PathProgramCache]: Analyzing trace with hash -796469579, now seen corresponding path program 1 times [2021-01-07 05:09:48,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:48,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296970741] [2021-01-07 05:09:48,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-01-07 05:09:48,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296970741] [2021-01-07 05:09:48,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647492528] [2021-01-07 05:09:48,923 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:49,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-07 05:09:49,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-01-07 05:09:49,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:49,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-01-07 05:09:49,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077256636] [2021-01-07 05:09:49,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:09:49,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:49,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:09:49,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:09:49,237 INFO L87 Difference]: Start difference. First operand 2470 states and 3187 transitions. Second operand 11 states. [2021-01-07 05:09:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:49,773 INFO L93 Difference]: Finished difference Result 5079 states and 6557 transitions. [2021-01-07 05:09:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:09:49,773 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2021-01-07 05:09:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:49,783 INFO L225 Difference]: With dead ends: 5079 [2021-01-07 05:09:49,784 INFO L226 Difference]: Without dead ends: 5079 [2021-01-07 05:09:49,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:09:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5079 states. [2021-01-07 05:09:49,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5079 to 2819. [2021-01-07 05:09:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2819 states. [2021-01-07 05:09:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3682 transitions. [2021-01-07 05:09:49,839 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3682 transitions. Word has length 100 [2021-01-07 05:09:49,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:49,839 INFO L481 AbstractCegarLoop]: Abstraction has 2819 states and 3682 transitions. [2021-01-07 05:09:49,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:09:49,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3682 transitions. [2021-01-07 05:09:49,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-07 05:09:49,842 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:49,843 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 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] [2021-01-07 05:09:50,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:09:50,057 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:50,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1079245400, now seen corresponding path program 1 times [2021-01-07 05:09:50,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:50,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033209366] [2021-01-07 05:09:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-01-07 05:09:50,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033209366] [2021-01-07 05:09:50,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511059797] [2021-01-07 05:09:50,147 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:50,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:09:50,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-01-07 05:09:50,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:50,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-01-07 05:09:50,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285494728] [2021-01-07 05:09:50,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:09:50,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:50,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:09:50,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:09:50,397 INFO L87 Difference]: Start difference. First operand 2819 states and 3682 transitions. Second operand 6 states. [2021-01-07 05:09:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:50,759 INFO L93 Difference]: Finished difference Result 5073 states and 6533 transitions. [2021-01-07 05:09:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:09:50,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2021-01-07 05:09:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:50,770 INFO L225 Difference]: With dead ends: 5073 [2021-01-07 05:09:50,770 INFO L226 Difference]: Without dead ends: 5073 [2021-01-07 05:09:50,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:09:50,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5073 states. [2021-01-07 05:09:50,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5073 to 2819. [2021-01-07 05:09:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2819 states. [2021-01-07 05:09:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3672 transitions. [2021-01-07 05:09:50,831 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3672 transitions. Word has length 101 [2021-01-07 05:09:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:50,831 INFO L481 AbstractCegarLoop]: Abstraction has 2819 states and 3672 transitions. [2021-01-07 05:09:50,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:09:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3672 transitions. [2021-01-07 05:09:50,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-01-07 05:09:50,835 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:50,835 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 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] [2021-01-07 05:09:51,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:09:51,050 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:51,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:51,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2069163900, now seen corresponding path program 1 times [2021-01-07 05:09:51,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:51,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631164604] [2021-01-07 05:09:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-01-07 05:09:51,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631164604] [2021-01-07 05:09:51,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297597980] [2021-01-07 05:09:51,188 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:51,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:09:51,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-01-07 05:09:51,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:51,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-01-07 05:09:51,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966880089] [2021-01-07 05:09:51,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:09:51,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:51,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:09:51,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:09:51,412 INFO L87 Difference]: Start difference. First operand 2819 states and 3672 transitions. Second operand 6 states. [2021-01-07 05:09:51,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:51,720 INFO L93 Difference]: Finished difference Result 5069 states and 6529 transitions. [2021-01-07 05:09:51,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:09:51,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2021-01-07 05:09:51,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:51,732 INFO L225 Difference]: With dead ends: 5069 [2021-01-07 05:09:51,732 INFO L226 Difference]: Without dead ends: 5069 [2021-01-07 05:09:51,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:09:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2021-01-07 05:09:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 2820. [2021-01-07 05:09:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2820 states. [2021-01-07 05:09:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3673 transitions. [2021-01-07 05:09:51,784 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3673 transitions. Word has length 103 [2021-01-07 05:09:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:51,785 INFO L481 AbstractCegarLoop]: Abstraction has 2820 states and 3673 transitions. [2021-01-07 05:09:51,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:09:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3673 transitions. [2021-01-07 05:09:51,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-01-07 05:09:51,788 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:51,788 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 8, 6, 5, 4, 4, 3, 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] [2021-01-07 05:09:52,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:52,002 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:52,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:52,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1485142690, now seen corresponding path program 1 times [2021-01-07 05:09:52,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:52,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746973433] [2021-01-07 05:09:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 78 proven. 290 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-01-07 05:09:52,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746973433] [2021-01-07 05:09:52,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588787954] [2021-01-07 05:09:52,250 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:52,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-07 05:09:52,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:52,437 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:09:52,438 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:52,444 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:52,448 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:09:52,448 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:52,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:52,455 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:52,455 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2021-01-07 05:09:52,523 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-01-07 05:09:52,524 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:52,532 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:52,535 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-01-07 05:09:52,536 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:52,542 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:52,542 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:52,543 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:10 [2021-01-07 05:09:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 78 proven. 290 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-01-07 05:09:52,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:52,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-07 05:09:52,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710738826] [2021-01-07 05:09:52,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:09:52,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:52,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:09:52,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:09:52,649 INFO L87 Difference]: Start difference. First operand 2820 states and 3673 transitions. Second operand 12 states. [2021-01-07 05:09:55,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:55,103 INFO L93 Difference]: Finished difference Result 16660 states and 21220 transitions. [2021-01-07 05:09:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-01-07 05:09:55,104 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2021-01-07 05:09:55,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:55,132 INFO L225 Difference]: With dead ends: 16660 [2021-01-07 05:09:55,132 INFO L226 Difference]: Without dead ends: 16660 [2021-01-07 05:09:55,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=696, Invalid=3726, Unknown=0, NotChecked=0, Total=4422 [2021-01-07 05:09:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16660 states. [2021-01-07 05:09:55,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16660 to 9102. [2021-01-07 05:09:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9102 states. [2021-01-07 05:09:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9102 states to 9102 states and 11967 transitions. [2021-01-07 05:09:55,352 INFO L78 Accepts]: Start accepts. Automaton has 9102 states and 11967 transitions. Word has length 105 [2021-01-07 05:09:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:55,352 INFO L481 AbstractCegarLoop]: Abstraction has 9102 states and 11967 transitions. [2021-01-07 05:09:55,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:09:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 9102 states and 11967 transitions. [2021-01-07 05:09:55,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-07 05:09:55,367 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:55,368 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 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] [2021-01-07 05:09:55,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:55,582 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:55,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1091289145, now seen corresponding path program 1 times [2021-01-07 05:09:55,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:55,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761280669] [2021-01-07 05:09:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 46 proven. 180 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-01-07 05:09:55,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761280669] [2021-01-07 05:09:55,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420410047] [2021-01-07 05:09:55,842 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:55,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:09:55,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:56,045 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:09:56,046 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:56,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:56,055 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:09:56,056 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:56,062 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:56,063 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:56,063 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2021-01-07 05:09:56,162 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:56,162 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-01-07 05:09:56,164 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:09:56,174 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:56,181 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:56,181 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-01-07 05:09:56,183 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-01-07 05:09:56,193 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:56,195 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:09:56,197 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:09:56,201 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:09:56,205 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2021-01-07 05:09:56,206 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:43, output treesize:37 [2021-01-07 05:09:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-01-07 05:09:56,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:56,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-01-07 05:09:56,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868229561] [2021-01-07 05:09:56,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:09:56,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:56,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:09:56,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:09:56,289 INFO L87 Difference]: Start difference. First operand 9102 states and 11967 transitions. Second operand 16 states. [2021-01-07 05:09:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:56,891 INFO L93 Difference]: Finished difference Result 15747 states and 20349 transitions. [2021-01-07 05:09:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:09:56,891 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2021-01-07 05:09:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:56,915 INFO L225 Difference]: With dead ends: 15747 [2021-01-07 05:09:56,915 INFO L226 Difference]: Without dead ends: 15747 [2021-01-07 05:09:56,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:09:56,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15747 states. [2021-01-07 05:09:57,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15747 to 11547. [2021-01-07 05:09:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11547 states. [2021-01-07 05:09:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11547 states to 11547 states and 15172 transitions. [2021-01-07 05:09:57,108 INFO L78 Accepts]: Start accepts. Automaton has 11547 states and 15172 transitions. Word has length 106 [2021-01-07 05:09:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:57,108 INFO L481 AbstractCegarLoop]: Abstraction has 11547 states and 15172 transitions. [2021-01-07 05:09:57,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:09:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 11547 states and 15172 transitions. [2021-01-07 05:09:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-07 05:09:57,116 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:57,117 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 5, 5, 4, 4, 3, 3, 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] [2021-01-07 05:09:57,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:57,330 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:57,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:57,331 INFO L82 PathProgramCache]: Analyzing trace with hash -529776269, now seen corresponding path program 1 times [2021-01-07 05:09:57,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:57,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177278102] [2021-01-07 05:09:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-01-07 05:09:57,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177278102] [2021-01-07 05:09:57,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369562357] [2021-01-07 05:09:57,535 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:57,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:09:57,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-01-07 05:09:57,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:57,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-01-07 05:09:57,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182384127] [2021-01-07 05:09:57,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:09:57,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:57,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:09:57,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:09:57,944 INFO L87 Difference]: Start difference. First operand 11547 states and 15172 transitions. Second operand 12 states. [2021-01-07 05:09:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:58,658 INFO L93 Difference]: Finished difference Result 26656 states and 35024 transitions. [2021-01-07 05:09:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:09:58,659 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2021-01-07 05:09:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:58,702 INFO L225 Difference]: With dead ends: 26656 [2021-01-07 05:09:58,702 INFO L226 Difference]: Without dead ends: 26638 [2021-01-07 05:09:58,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:09:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26638 states. [2021-01-07 05:09:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26638 to 20250. [2021-01-07 05:09:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20250 states. [2021-01-07 05:09:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20250 states to 20250 states and 26695 transitions. [2021-01-07 05:09:59,199 INFO L78 Accepts]: Start accepts. Automaton has 20250 states and 26695 transitions. Word has length 107 [2021-01-07 05:09:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:59,200 INFO L481 AbstractCegarLoop]: Abstraction has 20250 states and 26695 transitions. [2021-01-07 05:09:59,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:09:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 20250 states and 26695 transitions. [2021-01-07 05:09:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-07 05:09:59,253 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:59,253 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 8, 7, 6, 6, 5, 4, 3, 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] [2021-01-07 05:09:59,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-07 05:09:59,454 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:59,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:59,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1958934177, now seen corresponding path program 2 times [2021-01-07 05:09:59,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:59,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25664966] [2021-01-07 05:09:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 273 proven. 3 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-01-07 05:09:59,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25664966] [2021-01-07 05:09:59,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011234505] [2021-01-07 05:09:59,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:59,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:09:59,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:59,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:09:59,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:59,811 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:09:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 298 proven. 10 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-01-07 05:09:59,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:59,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2021-01-07 05:09:59,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343807411] [2021-01-07 05:09:59,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:09:59,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:59,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:09:59,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:09:59,878 INFO L87 Difference]: Start difference. First operand 20250 states and 26695 transitions. Second operand 9 states. [2021-01-07 05:10:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:00,057 INFO L93 Difference]: Finished difference Result 9867 states and 11900 transitions. [2021-01-07 05:10:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:10:00,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2021-01-07 05:10:00,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:00,071 INFO L225 Difference]: With dead ends: 9867 [2021-01-07 05:10:00,071 INFO L226 Difference]: Without dead ends: 9617 [2021-01-07 05:10:00,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:10:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9617 states. [2021-01-07 05:10:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9617 to 7469. [2021-01-07 05:10:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7469 states. [2021-01-07 05:10:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7469 states to 7469 states and 9061 transitions. [2021-01-07 05:10:00,226 INFO L78 Accepts]: Start accepts. Automaton has 7469 states and 9061 transitions. Word has length 121 [2021-01-07 05:10:00,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:00,227 INFO L481 AbstractCegarLoop]: Abstraction has 7469 states and 9061 transitions. [2021-01-07 05:10:00,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:10:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 7469 states and 9061 transitions. [2021-01-07 05:10:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-01-07 05:10:00,236 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:00,236 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 12, 9, 6, 5, 4, 3, 3, 3, 3, 3, 3, 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] [2021-01-07 05:10:00,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:00,449 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:00,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:00,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1546969809, now seen corresponding path program 3 times [2021-01-07 05:10:00,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:00,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148754599] [2021-01-07 05:10:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 392 proven. 3 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-01-07 05:10:00,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148754599] [2021-01-07 05:10:00,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064586578] [2021-01-07 05:10:00,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:00,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-01-07 05:10:00,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:00,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-07 05:10:00,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:00,934 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:10:00,935 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:00,942 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:00,946 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:10:00,947 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:00,953 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:00,953 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:00,954 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:25 [2021-01-07 05:10:01,018 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:01,019 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-01-07 05:10:01,020 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-01-07 05:10:01,030 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:01,041 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:01,042 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-01-07 05:10:01,043 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2021-01-07 05:10:01,055 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:01,056 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:01,056 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:40, output treesize:28 [2021-01-07 05:10:01,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:10:01,128 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:10:01,130 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:10:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 141 proven. 480 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-01-07 05:10:01,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:01,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 18 [2021-01-07 05:10:01,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841242700] [2021-01-07 05:10:01,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-07 05:10:01,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:01,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-07 05:10:01,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:10:01,288 INFO L87 Difference]: Start difference. First operand 7469 states and 9061 transitions. Second operand 18 states. [2021-01-07 05:10:06,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:06,650 INFO L93 Difference]: Finished difference Result 17153 states and 20204 transitions. [2021-01-07 05:10:06,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-01-07 05:10:06,650 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 139 [2021-01-07 05:10:06,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:06,678 INFO L225 Difference]: With dead ends: 17153 [2021-01-07 05:10:06,678 INFO L226 Difference]: Without dead ends: 17082 [2021-01-07 05:10:06,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3921 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1385, Invalid=9327, Unknown=0, NotChecked=0, Total=10712 [2021-01-07 05:10:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17082 states. [2021-01-07 05:10:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17082 to 10765. [2021-01-07 05:10:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10765 states. [2021-01-07 05:10:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 12899 transitions. [2021-01-07 05:10:06,902 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 12899 transitions. Word has length 139 [2021-01-07 05:10:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:06,903 INFO L481 AbstractCegarLoop]: Abstraction has 10765 states and 12899 transitions. [2021-01-07 05:10:06,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-07 05:10:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 12899 transitions. [2021-01-07 05:10:06,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-01-07 05:10:06,915 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:06,915 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:07,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:10:07,129 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:07,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:07,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2038254336, now seen corresponding path program 1 times [2021-01-07 05:10:07,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:07,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514286193] [2021-01-07 05:10:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 98 proven. 638 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-07 05:10:07,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514286193] [2021-01-07 05:10:07,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479935848] [2021-01-07 05:10:07,597 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:07,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 57 conjunts are in the unsatisfiable core [2021-01-07 05:10:07,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:07,729 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:10:07,730 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,735 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:07,736 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2021-01-07 05:10:07,771 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:10:07,771 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,778 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:07,782 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:10:07,782 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,789 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:07,789 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,789 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:27 [2021-01-07 05:10:07,887 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:07,887 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:10:07,889 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:10:07,891 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,896 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:07,897 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,897 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2021-01-07 05:10:07,906 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-01-07 05:10:07,909 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,919 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:07,923 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-01-07 05:10:07,924 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,930 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:07,931 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,931 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:22 [2021-01-07 05:10:07,943 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:10:07,945 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,955 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:07,960 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:10:07,961 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,971 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:07,971 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:07,972 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2021-01-07 05:10:08,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:10:08,017 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-01-07 05:10:08,019 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:08,031 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:08,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:10:08,035 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-01-07 05:10:08,037 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:08,046 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:08,047 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:08,047 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:70, output treesize:40 [2021-01-07 05:10:08,083 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-01-07 05:10:08,084 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:08,097 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:08,101 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-01-07 05:10:08,102 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:08,111 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:08,112 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:08,113 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:66, output treesize:18 [2021-01-07 05:10:08,158 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-01-07 05:10:08,158 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:08,165 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:08,168 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-01-07 05:10:08,169 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:08,175 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:08,176 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:08,176 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:10 [2021-01-07 05:10:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 98 proven. 625 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-01-07 05:10:08,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:08,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-01-07 05:10:08,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807173319] [2021-01-07 05:10:08,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:10:08,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:08,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:10:08,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:10:08,316 INFO L87 Difference]: Start difference. First operand 10765 states and 12899 transitions. Second operand 17 states. [2021-01-07 05:10:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:13,687 INFO L93 Difference]: Finished difference Result 38640 states and 45316 transitions. [2021-01-07 05:10:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-01-07 05:10:13,688 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 145 [2021-01-07 05:10:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:13,731 INFO L225 Difference]: With dead ends: 38640 [2021-01-07 05:10:13,731 INFO L226 Difference]: Without dead ends: 38502 [2021-01-07 05:10:13,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1415, Invalid=8887, Unknown=0, NotChecked=0, Total=10302 [2021-01-07 05:10:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38502 states. [2021-01-07 05:10:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38502 to 16501. [2021-01-07 05:10:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16501 states. [2021-01-07 05:10:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16501 states to 16501 states and 19769 transitions. [2021-01-07 05:10:14,087 INFO L78 Accepts]: Start accepts. Automaton has 16501 states and 19769 transitions. Word has length 145 [2021-01-07 05:10:14,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:14,087 INFO L481 AbstractCegarLoop]: Abstraction has 16501 states and 19769 transitions. [2021-01-07 05:10:14,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:10:14,087 INFO L276 IsEmpty]: Start isEmpty. Operand 16501 states and 19769 transitions. [2021-01-07 05:10:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-01-07 05:10:14,102 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:14,103 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:14,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:10:14,318 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1766483300, now seen corresponding path program 2 times [2021-01-07 05:10:14,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:14,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993735020] [2021-01-07 05:10:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 98 proven. 638 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-07 05:10:14,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993735020] [2021-01-07 05:10:14,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770066538] [2021-01-07 05:10:14,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:14,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:10:14,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:14,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 57 conjunts are in the unsatisfiable core [2021-01-07 05:10:14,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:15,002 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:10:15,003 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,008 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,009 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,009 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2021-01-07 05:10:15,047 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:10:15,047 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,055 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,058 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:10:15,058 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,065 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,066 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,066 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:27 [2021-01-07 05:10:15,108 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,109 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:10:15,110 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:10:15,112 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,119 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,119 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2021-01-07 05:10:15,127 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-01-07 05:10:15,128 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,140 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-01-07 05:10:15,141 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,148 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,148 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,149 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:22 [2021-01-07 05:10:15,156 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:10:15,158 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,168 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,171 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:10:15,172 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,181 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,182 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,182 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2021-01-07 05:10:15,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:10:15,235 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-01-07 05:10:15,236 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,248 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:10:15,253 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-01-07 05:10:15,254 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,263 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,264 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,264 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:70, output treesize:40 [2021-01-07 05:10:15,343 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-01-07 05:10:15,345 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,361 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-01-07 05:10:15,363 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,374 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,376 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,377 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:66, output treesize:18 [2021-01-07 05:10:15,415 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-01-07 05:10:15,416 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,423 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,425 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-01-07 05:10:15,426 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,431 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:15,432 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:15,432 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:10 [2021-01-07 05:10:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 98 proven. 630 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-07 05:10:15,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:15,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 17 [2021-01-07 05:10:15,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921148837] [2021-01-07 05:10:15,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-07 05:10:15,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:15,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-07 05:10:15,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:10:15,577 INFO L87 Difference]: Start difference. First operand 16501 states and 19769 transitions. Second operand 18 states. [2021-01-07 05:10:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:24,428 INFO L93 Difference]: Finished difference Result 50056 states and 58534 transitions. [2021-01-07 05:10:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-01-07 05:10:24,428 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 145 [2021-01-07 05:10:24,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:24,474 INFO L225 Difference]: With dead ends: 50056 [2021-01-07 05:10:24,475 INFO L226 Difference]: Without dead ends: 49859 [2021-01-07 05:10:24,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7124 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2241, Invalid=15315, Unknown=0, NotChecked=0, Total=17556 [2021-01-07 05:10:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49859 states. [2021-01-07 05:10:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49859 to 17430. [2021-01-07 05:10:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17430 states. [2021-01-07 05:10:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17430 states to 17430 states and 20853 transitions. [2021-01-07 05:10:24,878 INFO L78 Accepts]: Start accepts. Automaton has 17430 states and 20853 transitions. Word has length 145 [2021-01-07 05:10:24,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:24,878 INFO L481 AbstractCegarLoop]: Abstraction has 17430 states and 20853 transitions. [2021-01-07 05:10:24,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-07 05:10:24,878 INFO L276 IsEmpty]: Start isEmpty. Operand 17430 states and 20853 transitions. [2021-01-07 05:10:24,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-01-07 05:10:24,892 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:24,892 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:25,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-07 05:10:25,108 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:25,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:25,109 INFO L82 PathProgramCache]: Analyzing trace with hash -2022618510, now seen corresponding path program 3 times [2021-01-07 05:10:25,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:25,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187447142] [2021-01-07 05:10:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 98 proven. 639 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-01-07 05:10:25,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187447142] [2021-01-07 05:10:25,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209219933] [2021-01-07 05:10:25,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:25,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-01-07 05:10:25,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:25,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 59 conjunts are in the unsatisfiable core [2021-01-07 05:10:25,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:25,829 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:10:25,830 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:25,835 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:25,836 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:25,836 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2021-01-07 05:10:25,864 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:10:25,864 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:25,874 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:25,877 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:10:25,878 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:25,886 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:25,887 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:25,887 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:33 [2021-01-07 05:10:26,005 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,005 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:10:26,007 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:10:26,008 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,015 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,015 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,016 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2021-01-07 05:10:26,048 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-01-07 05:10:26,049 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,058 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,061 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-01-07 05:10:26,062 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,068 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,069 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,069 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:22 [2021-01-07 05:10:26,078 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:10:26,079 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,089 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,094 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:10:26,095 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,104 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,105 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,105 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2021-01-07 05:10:26,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:10:26,155 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-01-07 05:10:26,156 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,170 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:10:26,175 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-01-07 05:10:26,176 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,185 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,186 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,187 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:70, output treesize:40 [2021-01-07 05:10:26,271 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-01-07 05:10:26,273 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,291 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-01-07 05:10:26,292 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,307 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:10:26,307 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:66, output treesize:40 [2021-01-07 05:10:26,451 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,451 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 40 [2021-01-07 05:10:26,453 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,478 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,501 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,502 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 40 [2021-01-07 05:10:26,503 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,537 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:26,539 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:10:26,540 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:10:26,542 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:26,542 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:58, output treesize:28 [2021-01-07 05:10:26,876 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-01-07 05:10:26,888 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:10:26,889 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:10:26,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:10:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 138 proven. 577 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-01-07 05:10:27,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:27,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 24 [2021-01-07 05:10:27,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528411808] [2021-01-07 05:10:27,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-07 05:10:27,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:27,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-07 05:10:27,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:10:27,032 INFO L87 Difference]: Start difference. First operand 17430 states and 20853 transitions. Second operand 25 states. [2021-01-07 05:10:28,390 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2021-01-07 05:10:29,164 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:10:30,206 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:10:30,394 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-01-07 05:10:30,530 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-01-07 05:10:31,103 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-01-07 05:10:31,669 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-01-07 05:10:32,220 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-01-07 05:10:32,871 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-01-07 05:10:33,252 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-01-07 05:10:33,384 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-01-07 05:10:33,553 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:10:33,726 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-01-07 05:10:34,492 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-01-07 05:10:34,687 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-01-07 05:10:35,034 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:10:35,215 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-01-07 05:10:35,494 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-01-07 05:10:36,058 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-01-07 05:10:36,199 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-01-07 05:10:36,434 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-01-07 05:10:37,241 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-01-07 05:10:38,232 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2021-01-07 05:10:40,182 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:10:41,472 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:10:42,975 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-01-07 05:10:43,968 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-07 05:10:44,280 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-07 05:10:44,512 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-01-07 05:10:44,675 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-01-07 05:10:44,972 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-01-07 05:10:45,130 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-07 05:10:45,307 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-07 05:10:45,609 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-07 05:10:45,858 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-07 05:10:46,017 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-01-07 05:10:46,362 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-01-07 05:10:46,717 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-01-07 05:10:47,069 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-01-07 05:10:47,460 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-07 05:10:47,640 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-01-07 05:10:47,838 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-01-07 05:10:48,124 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-07 05:10:48,275 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-01-07 05:10:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:49,303 INFO L93 Difference]: Finished difference Result 61945 states and 72723 transitions. [2021-01-07 05:10:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2021-01-07 05:10:49,303 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 145 [2021-01-07 05:10:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:49,365 INFO L225 Difference]: With dead ends: 61945 [2021-01-07 05:10:49,365 INFO L226 Difference]: Without dead ends: 61768 [2021-01-07 05:10:49,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16430 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=4565, Invalid=35235, Unknown=0, NotChecked=0, Total=39800 [2021-01-07 05:10:49,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61768 states. [2021-01-07 05:10:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61768 to 12414. [2021-01-07 05:10:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12414 states. [2021-01-07 05:10:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 14858 transitions. [2021-01-07 05:10:49,791 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 14858 transitions. Word has length 145 [2021-01-07 05:10:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:49,792 INFO L481 AbstractCegarLoop]: Abstraction has 12414 states and 14858 transitions. [2021-01-07 05:10:49,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-07 05:10:49,792 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 14858 transitions. [2021-01-07 05:10:49,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-01-07 05:10:49,799 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:49,799 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 15, 10, 8, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:50,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:10:50,013 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1004735527, now seen corresponding path program 1 times [2021-01-07 05:10:50,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:50,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701565936] [2021-01-07 05:10:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 365 proven. 3 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-01-07 05:10:50,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701565936] [2021-01-07 05:10:50,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473923755] [2021-01-07 05:10:50,132 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:50,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-07 05:10:50,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:50,504 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-01-07 05:10:50,536 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:10:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 323 proven. 106 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-01-07 05:10:50,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:50,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-01-07 05:10:50,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947889969] [2021-01-07 05:10:50,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:10:50,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:50,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:10:50,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:10:50,583 INFO L87 Difference]: Start difference. First operand 12414 states and 14858 transitions. Second operand 10 states. [2021-01-07 05:10:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:50,920 INFO L93 Difference]: Finished difference Result 11093 states and 12827 transitions. [2021-01-07 05:10:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:10:50,921 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2021-01-07 05:10:50,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:50,930 INFO L225 Difference]: With dead ends: 11093 [2021-01-07 05:10:50,930 INFO L226 Difference]: Without dead ends: 10855 [2021-01-07 05:10:50,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:10:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10855 states. [2021-01-07 05:10:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10855 to 8479. [2021-01-07 05:10:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8479 states. [2021-01-07 05:10:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 9828 transitions. [2021-01-07 05:10:51,036 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 9828 transitions. Word has length 150 [2021-01-07 05:10:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:51,036 INFO L481 AbstractCegarLoop]: Abstraction has 8479 states and 9828 transitions. [2021-01-07 05:10:51,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:10:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 9828 transitions. [2021-01-07 05:10:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-01-07 05:10:51,043 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:51,043 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 11, 9, 8, 7, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:51,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-07 05:10:51,258 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:51,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:51,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1257123705, now seen corresponding path program 4 times [2021-01-07 05:10:51,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:51,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617660792] [2021-01-07 05:10:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 82 proven. 721 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-01-07 05:10:51,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617660792] [2021-01-07 05:10:51,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963776900] [2021-01-07 05:10:51,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:51,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:10:51,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:51,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-07 05:10:51,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:51,874 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:10:51,875 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:51,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:51,882 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:10:51,883 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:51,888 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:51,888 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:51,889 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2021-01-07 05:10:51,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:10:51,964 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-01-07 05:10:51,965 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:51,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:51,982 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:51,982 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:10:51,984 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:10:51,985 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:51,996 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:51,997 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:51,997 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2021-01-07 05:10:52,091 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:10:52,092 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:52,103 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:52,107 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:10:52,107 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:52,117 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:52,118 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:52,118 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:39 [2021-01-07 05:10:52,268 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-01-07 05:10:52,269 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:52,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:52,280 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:10:52,283 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:52,289 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:52,290 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:10:52,291 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:18 [2021-01-07 05:10:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 82 proven. 716 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-01-07 05:10:52,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:52,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2021-01-07 05:10:52,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027025710] [2021-01-07 05:10:52,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-07 05:10:52,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:52,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-07 05:10:52,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:10:52,781 INFO L87 Difference]: Start difference. First operand 8479 states and 9828 transitions. Second operand 25 states. [2021-01-07 05:10:54,374 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2021-01-07 05:10:55,090 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-01-07 05:10:55,229 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-01-07 05:10:55,365 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-07 05:10:56,463 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-01-07 05:10:56,977 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-01-07 05:10:57,579 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2021-01-07 05:10:58,311 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-01-07 05:10:58,558 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-01-07 05:10:59,470 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-01-07 05:10:59,934 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:11:00,521 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-07 05:11:00,924 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-01-07 05:11:01,086 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-01-07 05:11:02,632 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-01-07 05:11:02,931 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-01-07 05:11:03,396 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2021-01-07 05:11:03,805 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-01-07 05:11:03,960 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-01-07 05:11:04,199 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-01-07 05:11:04,359 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-01-07 05:11:04,533 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-01-07 05:11:04,691 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-01-07 05:11:04,917 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-01-07 05:11:05,087 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-01-07 05:11:06,233 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-01-07 05:11:06,705 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-01-07 05:11:06,970 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-01-07 05:11:07,749 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-01-07 05:11:07,923 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-01-07 05:11:08,104 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-01-07 05:11:08,272 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2021-01-07 05:11:08,871 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2021-01-07 05:11:09,269 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-01-07 05:11:09,451 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-01-07 05:11:09,703 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-01-07 05:11:09,895 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-01-07 05:11:10,068 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2021-01-07 05:11:10,247 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-01-07 05:11:11,042 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-01-07 05:11:11,563 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-01-07 05:11:11,910 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-01-07 05:11:12,963 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2021-01-07 05:11:13,683 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2021-01-07 05:11:14,013 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2021-01-07 05:11:14,989 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-01-07 05:11:15,955 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-01-07 05:11:17,088 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-01-07 05:11:17,484 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-01-07 05:11:17,676 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2021-01-07 05:11:18,825 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2021-01-07 05:11:18,997 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2021-01-07 05:11:20,651 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2021-01-07 05:11:20,867 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-01-07 05:11:21,031 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-01-07 05:11:21,733 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-01-07 05:11:21,993 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-01-07 05:11:22,439 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-01-07 05:11:22,928 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-01-07 05:11:23,099 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-01-07 05:11:23,471 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:11:23,627 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-01-07 05:11:24,098 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-01-07 05:11:24,292 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-01-07 05:11:24,808 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-01-07 05:11:25,293 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-01-07 05:11:25,591 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-01-07 05:11:26,089 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-01-07 05:11:26,240 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-01-07 05:11:26,576 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-01-07 05:11:26,848 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-01-07 05:11:27,533 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-01-07 05:11:27,722 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2021-01-07 05:11:27,963 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-01-07 05:11:28,702 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-01-07 05:11:29,206 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-01-07 05:11:29,495 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-01-07 05:11:29,824 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-01-07 05:11:30,162 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-01-07 05:11:30,513 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-01-07 05:11:30,853 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2021-01-07 05:11:31,229 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-01-07 05:11:31,652 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-01-07 05:11:31,831 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2021-01-07 05:11:31,995 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-01-07 05:11:32,349 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-01-07 05:11:32,701 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-01-07 05:11:33,287 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-01-07 05:11:33,481 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-01-07 05:11:33,674 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2021-01-07 05:11:34,120 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2021-01-07 05:11:34,568 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-01-07 05:11:34,750 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-01-07 05:11:35,586 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-01-07 05:11:36,051 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2021-01-07 05:11:36,259 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2021-01-07 05:11:36,637 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:11:36,957 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-01-07 05:11:37,277 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-01-07 05:11:37,487 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2021-01-07 05:11:37,679 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2021-01-07 05:11:37,879 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2021-01-07 05:11:38,088 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-01-07 05:11:38,313 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2021-01-07 05:11:38,570 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-01-07 05:11:39,213 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-01-07 05:11:39,396 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2021-01-07 05:11:39,739 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-01-07 05:11:39,987 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-01-07 05:11:40,218 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-01-07 05:11:40,409 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-01-07 05:11:41,883 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2021-01-07 05:11:42,080 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-01-07 05:11:42,501 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2021-01-07 05:11:42,757 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2021-01-07 05:11:43,038 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2021-01-07 05:11:43,264 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2021-01-07 05:11:43,545 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-01-07 05:11:43,726 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-01-07 05:11:43,892 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-01-07 05:11:44,087 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-01-07 05:11:44,719 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2021-01-07 05:11:44,928 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-01-07 05:11:45,111 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:11:45,376 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2021-01-07 05:11:45,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:45,544 INFO L93 Difference]: Finished difference Result 122756 states and 139602 transitions. [2021-01-07 05:11:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2021-01-07 05:11:45,547 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 155 [2021-01-07 05:11:45,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:45,677 INFO L225 Difference]: With dead ends: 122756 [2021-01-07 05:11:45,677 INFO L226 Difference]: Without dead ends: 122756 [2021-01-07 05:11:45,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 401 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75443 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=30138, Invalid=131868, Unknown=0, NotChecked=0, Total=162006 [2021-01-07 05:11:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122756 states. [2021-01-07 05:11:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122756 to 19759. [2021-01-07 05:11:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19759 states. [2021-01-07 05:11:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19759 states to 19759 states and 22963 transitions. [2021-01-07 05:11:46,498 INFO L78 Accepts]: Start accepts. Automaton has 19759 states and 22963 transitions. Word has length 155 [2021-01-07 05:11:46,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:46,499 INFO L481 AbstractCegarLoop]: Abstraction has 19759 states and 22963 transitions. [2021-01-07 05:11:46,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-07 05:11:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand 19759 states and 22963 transitions. [2021-01-07 05:11:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-01-07 05:11:46,504 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:46,504 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 11, 9, 8, 7, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:46,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:46,705 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:11:46,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:46,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1257123706, now seen corresponding path program 1 times [2021-01-07 05:11:46,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:46,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412425663] [2021-01-07 05:11:46,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 114 proven. 681 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-01-07 05:11:47,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412425663] [2021-01-07 05:11:47,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190331331] [2021-01-07 05:11:47,044 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:47,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-07 05:11:47,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:47,190 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:11:47,190 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:47,192 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:47,193 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:11:47,193 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 05:11:47,256 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:47,256 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:11:47,257 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:47,273 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2021-01-07 05:11:47,274 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:11:47,274 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2021-01-07 05:11:47,363 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:11:47,364 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:47,373 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:47,374 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:11:47,374 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2021-01-07 05:11:47,515 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-01-07 05:11:47,517 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:47,527 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:47,529 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:11:47,529 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2021-01-07 05:11:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 236 proven. 559 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-01-07 05:11:47,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:11:47,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2021-01-07 05:11:47,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475679018] [2021-01-07 05:11:47,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-07 05:11:47,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:47,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-07 05:11:47,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:11:47,640 INFO L87 Difference]: Start difference. First operand 19759 states and 22963 transitions. Second operand 21 states. [2021-01-07 05:11:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:50,382 INFO L93 Difference]: Finished difference Result 50592 states and 58336 transitions. [2021-01-07 05:11:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-07 05:11:50,382 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 155 [2021-01-07 05:11:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:50,432 INFO L225 Difference]: With dead ends: 50592 [2021-01-07 05:11:50,432 INFO L226 Difference]: Without dead ends: 50592 [2021-01-07 05:11:50,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=960, Invalid=2346, Unknown=0, NotChecked=0, Total=3306 [2021-01-07 05:11:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50592 states. [2021-01-07 05:11:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50592 to 30247. [2021-01-07 05:11:51,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30247 states. [2021-01-07 05:11:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30247 states to 30247 states and 35260 transitions. [2021-01-07 05:11:51,423 INFO L78 Accepts]: Start accepts. Automaton has 30247 states and 35260 transitions. Word has length 155 [2021-01-07 05:11:51,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:51,423 INFO L481 AbstractCegarLoop]: Abstraction has 30247 states and 35260 transitions. [2021-01-07 05:11:51,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-07 05:11:51,423 INFO L276 IsEmpty]: Start isEmpty. Operand 30247 states and 35260 transitions. [2021-01-07 05:11:51,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-01-07 05:11:51,429 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:51,429 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 16, 12, 10, 8, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:51,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:51,636 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:11:51,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:51,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1262137880, now seen corresponding path program 2 times [2021-01-07 05:11:51,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:51,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110644347] [2021-01-07 05:11:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 117 proven. 592 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-01-07 05:11:52,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110644347] [2021-01-07 05:11:52,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013445995] [2021-01-07 05:11:52,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:52,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:11:52,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:11:52,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-07 05:11:52,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:52,307 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:11:52,307 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:52,311 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:52,312 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:11:52,313 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2021-01-07 05:11:52,390 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:52,390 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-01-07 05:11:52,392 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:11:52,393 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:11:52,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:52,397 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 05:11:52,397 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:9 [2021-01-07 05:11:52,503 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:11:52,544 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:11:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 102 proven. 619 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-01-07 05:11:52,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:11:52,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 24 [2021-01-07 05:11:52,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46348793] [2021-01-07 05:11:52,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:11:52,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:52,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:11:52,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:11:52,650 INFO L87 Difference]: Start difference. First operand 30247 states and 35260 transitions. Second operand 24 states. [2021-01-07 05:11:59,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:59,943 INFO L93 Difference]: Finished difference Result 65023 states and 74471 transitions. [2021-01-07 05:11:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-01-07 05:11:59,944 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 157 [2021-01-07 05:11:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:12:00,006 INFO L225 Difference]: With dead ends: 65023 [2021-01-07 05:12:00,006 INFO L226 Difference]: Without dead ends: 65023 [2021-01-07 05:12:00,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4312 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3051, Invalid=11469, Unknown=0, NotChecked=0, Total=14520 [2021-01-07 05:12:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65023 states. [2021-01-07 05:12:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65023 to 29973. [2021-01-07 05:12:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29973 states. [2021-01-07 05:12:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29973 states to 29973 states and 34917 transitions. [2021-01-07 05:12:00,505 INFO L78 Accepts]: Start accepts. Automaton has 29973 states and 34917 transitions. Word has length 157 [2021-01-07 05:12:00,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:12:00,505 INFO L481 AbstractCegarLoop]: Abstraction has 29973 states and 34917 transitions. [2021-01-07 05:12:00,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:12:00,506 INFO L276 IsEmpty]: Start isEmpty. Operand 29973 states and 34917 transitions. [2021-01-07 05:12:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-01-07 05:12:00,511 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:12:00,511 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 16, 12, 10, 8, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:12:00,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-01-07 05:12:00,716 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:12:00,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:12:00,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1073464644, now seen corresponding path program 3 times [2021-01-07 05:12:00,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:12:00,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681399826] [2021-01-07 05:12:00,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:12:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:12:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 194 proven. 477 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-01-07 05:12:00,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681399826] [2021-01-07 05:12:00,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112316655] [2021-01-07 05:12:00,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:12:01,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-07 05:12:01,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:12:01,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:12:01,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:12:01,169 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:01,169 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:12:01,171 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:12:01,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:12:01,174 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:01,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:01,177 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:01,177 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2021-01-07 05:12:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 194 proven. 477 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-01-07 05:12:01,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:12:01,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-01-07 05:12:01,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346587969] [2021-01-07 05:12:01,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:12:01,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:12:01,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:12:01,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:12:01,276 INFO L87 Difference]: Start difference. First operand 29973 states and 34917 transitions. Second operand 9 states. [2021-01-07 05:12:01,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:12:01,879 INFO L93 Difference]: Finished difference Result 43708 states and 50447 transitions. [2021-01-07 05:12:01,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:12:01,880 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-01-07 05:12:01,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:12:02,088 INFO L225 Difference]: With dead ends: 43708 [2021-01-07 05:12:02,089 INFO L226 Difference]: Without dead ends: 43692 [2021-01-07 05:12:02,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:12:02,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43692 states. [2021-01-07 05:12:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43692 to 36708. [2021-01-07 05:12:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36708 states. [2021-01-07 05:12:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36708 states to 36708 states and 42502 transitions. [2021-01-07 05:12:02,554 INFO L78 Accepts]: Start accepts. Automaton has 36708 states and 42502 transitions. Word has length 157 [2021-01-07 05:12:02,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:12:02,554 INFO L481 AbstractCegarLoop]: Abstraction has 36708 states and 42502 transitions. [2021-01-07 05:12:02,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:12:02,554 INFO L276 IsEmpty]: Start isEmpty. Operand 36708 states and 42502 transitions. [2021-01-07 05:12:02,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-01-07 05:12:02,561 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:12:02,562 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 16, 12, 10, 8, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:12:02,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:12:02,763 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:12:02,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:12:02,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1158952238, now seen corresponding path program 4 times [2021-01-07 05:12:02,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:12:02,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783679726] [2021-01-07 05:12:02,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:12:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:12:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 194 proven. 469 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-01-07 05:12:02,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783679726] [2021-01-07 05:12:02,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52738656] [2021-01-07 05:12:02,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:12:03,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:12:03,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:12:03,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-07 05:12:03,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:12:03,219 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:12:03,219 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:03,229 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:03,231 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:03,232 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 05:12:03,277 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:03,277 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:12:03,279 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:12:03,280 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:03,282 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:03,282 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:03,282 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2021-01-07 05:12:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 193 proven. 470 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-01-07 05:12:03,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:12:03,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-01-07 05:12:03,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026715771] [2021-01-07 05:12:03,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:12:03,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:12:03,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:12:03,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:12:03,367 INFO L87 Difference]: Start difference. First operand 36708 states and 42502 transitions. Second operand 7 states. [2021-01-07 05:12:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:12:03,930 INFO L93 Difference]: Finished difference Result 49849 states and 57508 transitions. [2021-01-07 05:12:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:12:03,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2021-01-07 05:12:03,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:12:03,978 INFO L225 Difference]: With dead ends: 49849 [2021-01-07 05:12:03,979 INFO L226 Difference]: Without dead ends: 49833 [2021-01-07 05:12:03,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:12:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49833 states. [2021-01-07 05:12:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49833 to 29410. [2021-01-07 05:12:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29410 states. [2021-01-07 05:12:04,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29410 states to 29410 states and 34166 transitions. [2021-01-07 05:12:04,553 INFO L78 Accepts]: Start accepts. Automaton has 29410 states and 34166 transitions. Word has length 157 [2021-01-07 05:12:04,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:12:04,554 INFO L481 AbstractCegarLoop]: Abstraction has 29410 states and 34166 transitions. [2021-01-07 05:12:04,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:12:04,554 INFO L276 IsEmpty]: Start isEmpty. Operand 29410 states and 34166 transitions. [2021-01-07 05:12:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-01-07 05:12:04,559 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:12:04,560 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 16, 12, 10, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:12:04,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-01-07 05:12:04,761 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:12:04,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:12:04,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1208665945, now seen corresponding path program 1 times [2021-01-07 05:12:04,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:12:04,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987798801] [2021-01-07 05:12:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:12:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:12:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 336 proven. 244 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-01-07 05:12:04,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987798801] [2021-01-07 05:12:04,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064796700] [2021-01-07 05:12:04,891 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:12:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:12:05,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:12:05,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:12:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 507 proven. 16 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-01-07 05:12:05,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:12:05,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2021-01-07 05:12:05,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895655249] [2021-01-07 05:12:05,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:12:05,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:12:05,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:12:05,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:12:05,296 INFO L87 Difference]: Start difference. First operand 29410 states and 34166 transitions. Second operand 11 states. [2021-01-07 05:12:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:12:05,983 INFO L93 Difference]: Finished difference Result 18986 states and 22000 transitions. [2021-01-07 05:12:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-07 05:12:05,984 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 161 [2021-01-07 05:12:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:12:06,001 INFO L225 Difference]: With dead ends: 18986 [2021-01-07 05:12:06,001 INFO L226 Difference]: Without dead ends: 18986 [2021-01-07 05:12:06,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=1147, Unknown=0, NotChecked=0, Total=1332 [2021-01-07 05:12:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18986 states. [2021-01-07 05:12:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18986 to 10506. [2021-01-07 05:12:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10506 states. [2021-01-07 05:12:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10506 states to 10506 states and 12028 transitions. [2021-01-07 05:12:06,170 INFO L78 Accepts]: Start accepts. Automaton has 10506 states and 12028 transitions. Word has length 161 [2021-01-07 05:12:06,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:12:06,170 INFO L481 AbstractCegarLoop]: Abstraction has 10506 states and 12028 transitions. [2021-01-07 05:12:06,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:12:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10506 states and 12028 transitions. [2021-01-07 05:12:06,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-01-07 05:12:06,174 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:12:06,174 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 13, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:12:06,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:12:06,375 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:12:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:12:06,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1135580078, now seen corresponding path program 2 times [2021-01-07 05:12:06,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:12:06,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779210052] [2021-01-07 05:12:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:12:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:12:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 263 proven. 735 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-01-07 05:12:06,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779210052] [2021-01-07 05:12:06,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611941617] [2021-01-07 05:12:06,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:12:07,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:12:07,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:12:07,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-07 05:12:07,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:12:07,144 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:12:07,145 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,152 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 05:12:07,212 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,213 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:12:07,215 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,228 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2021-01-07 05:12:07,229 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,229 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2021-01-07 05:12:07,261 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:12:07,262 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,269 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,270 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,270 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2021-01-07 05:12:07,367 INFO L348 Elim1Store]: treesize reduction 12, result has 86.2 percent of original size [2021-01-07 05:12:07,368 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 89 [2021-01-07 05:12:07,369 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:12:07,370 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:12:07,372 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,384 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,384 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,385 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:35 [2021-01-07 05:12:07,426 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-01-07 05:12:07,427 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,438 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,439 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,439 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:35 [2021-01-07 05:12:07,451 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-01-07 05:12:07,453 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,469 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,471 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:12:07,471 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:48, output treesize:44 [2021-01-07 05:12:07,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:12:07,734 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-01-07 05:12:07,735 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,746 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,748 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:12:07,749 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:53, output treesize:27 [2021-01-07 05:12:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 289 proven. 717 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-01-07 05:12:08,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:12:08,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 26 [2021-01-07 05:12:08,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988126670] [2021-01-07 05:12:08,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-07 05:12:08,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:12:08,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-07 05:12:08,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:12:08,540 INFO L87 Difference]: Start difference. First operand 10506 states and 12028 transitions. Second operand 27 states. [2021-01-07 05:12:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:12:40,563 INFO L93 Difference]: Finished difference Result 29321 states and 33164 transitions. [2021-01-07 05:12:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-01-07 05:12:40,564 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 172 [2021-01-07 05:12:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:12:40,588 INFO L225 Difference]: With dead ends: 29321 [2021-01-07 05:12:40,588 INFO L226 Difference]: Without dead ends: 29321 [2021-01-07 05:12:40,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4036 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=3129, Invalid=9979, Unknown=2, NotChecked=0, Total=13110 [2021-01-07 05:12:40,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29321 states. [2021-01-07 05:12:40,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29321 to 9902. [2021-01-07 05:12:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9902 states. [2021-01-07 05:12:40,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9902 states to 9902 states and 11318 transitions. [2021-01-07 05:12:40,804 INFO L78 Accepts]: Start accepts. Automaton has 9902 states and 11318 transitions. Word has length 172 [2021-01-07 05:12:40,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:12:40,804 INFO L481 AbstractCegarLoop]: Abstraction has 9902 states and 11318 transitions. [2021-01-07 05:12:40,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-07 05:12:40,804 INFO L276 IsEmpty]: Start isEmpty. Operand 9902 states and 11318 transitions. [2021-01-07 05:12:40,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-01-07 05:12:40,807 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:12:40,808 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 13, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:12:41,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-01-07 05:12:41,009 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:12:41,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:12:41,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1063373525, now seen corresponding path program 5 times [2021-01-07 05:12:41,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:12:41,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891599889] [2021-01-07 05:12:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:12:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:12:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 123 proven. 876 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-01-07 05:12:41,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891599889] [2021-01-07 05:12:41,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022753151] [2021-01-07 05:12:41,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:12:42,296 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-01-07 05:12:42,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:12:42,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 65 conjunts are in the unsatisfiable core [2021-01-07 05:12:42,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:12:42,335 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:12:42,336 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,341 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:42,342 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:12:42,448 INFO L443 ElimStorePlain]: Different costs {0=[|v_#valid_49|], 1=[|v_#length_25|]} [2021-01-07 05:12:42,452 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:12:42,453 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,463 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:42,478 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:42,479 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:12:42,480 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,506 INFO L625 ElimStorePlain]: treesize reduction 14, result has 61.1 percent of original size [2021-01-07 05:12:42,507 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,507 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:22 [2021-01-07 05:12:42,633 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:12:42,634 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,647 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:42,651 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 05:12:42,652 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,664 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:42,665 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,665 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:45, output treesize:34 [2021-01-07 05:12:42,854 INFO L443 ElimStorePlain]: Different costs {1=[|v_#valid_50|], 3=[|v_#length_26|]} [2021-01-07 05:12:42,862 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:42,863 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:12:42,864 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:12:42,866 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:42,900 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:42,901 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 74 [2021-01-07 05:12:42,903 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,937 INFO L625 ElimStorePlain]: treesize reduction 32, result has 54.3 percent of original size [2021-01-07 05:12:42,938 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:42,939 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:38 [2021-01-07 05:12:43,043 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-01-07 05:12:43,045 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:43,062 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:43,076 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-01-07 05:12:43,077 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:43,088 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:43,089 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:12:43,089 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:68, output treesize:38 [2021-01-07 05:12:43,101 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 05:12:43,102 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:43,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:43,124 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-01-07 05:12:43,125 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:43,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:43,142 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:12:43,143 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:64, output treesize:56 [2021-01-07 05:12:43,315 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 12 [2021-01-07 05:12:43,317 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:43,330 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:43,334 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2021-01-07 05:12:43,335 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:43,344 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:43,345 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:12:43,346 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:23 [2021-01-07 05:12:44,175 WARN L197 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-01-07 05:12:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 133 proven. 900 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-01-07 05:12:44,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:12:44,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2021-01-07 05:12:44,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347167653] [2021-01-07 05:12:44,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-07 05:12:44,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:12:44,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-07 05:12:44,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:12:44,580 INFO L87 Difference]: Start difference. First operand 9902 states and 11318 transitions. Second operand 32 states. [2021-01-07 05:12:46,702 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-01-07 05:12:47,910 WARN L197 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-01-07 05:12:48,852 WARN L197 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-01-07 05:12:49,162 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-01-07 05:12:49,530 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-01-07 05:12:49,877 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2021-01-07 05:12:50,533 WARN L197 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-01-07 05:12:50,797 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2021-01-07 05:12:51,443 WARN L197 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-01-07 05:12:52,302 WARN L197 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-01-07 05:12:52,702 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-01-07 05:12:53,382 WARN L197 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-01-07 05:12:54,211 WARN L197 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-01-07 05:12:54,602 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-01-07 05:12:55,418 WARN L197 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-01-07 05:12:55,670 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-01-07 05:12:55,835 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-01-07 05:12:56,943 WARN L197 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-01-07 05:12:58,094 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-01-07 05:12:58,594 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-01-07 05:12:58,970 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-01-07 05:12:59,183 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-01-07 05:12:59,828 WARN L197 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-01-07 05:13:00,424 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-01-07 05:13:00,857 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-01-07 05:13:01,412 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-01-07 05:13:01,795 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-01-07 05:13:02,006 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2021-01-07 05:13:02,652 WARN L197 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2021-01-07 05:13:02,984 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-01-07 05:13:03,383 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2021-01-07 05:13:04,669 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-01-07 05:13:04,850 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:13:05,011 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-01-07 05:13:05,754 WARN L197 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-01-07 05:13:05,951 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-01-07 05:13:06,658 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-01-07 05:13:06,833 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-01-07 05:13:07,571 WARN L197 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-01-07 05:13:09,539 WARN L197 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-01-07 05:13:10,351 WARN L197 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-01-07 05:13:10,497 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-01-07 05:13:11,223 WARN L197 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-01-07 05:13:11,403 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-01-07 05:13:11,613 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2021-01-07 05:13:12,416 WARN L197 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2021-01-07 05:13:12,608 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-01-07 05:13:13,618 WARN L197 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-01-07 05:13:14,537 WARN L197 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-07 05:13:14,720 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-01-07 05:13:15,992 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2021-01-07 05:13:16,249 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-01-07 05:13:17,005 WARN L197 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-01-07 05:13:17,873 WARN L197 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-01-07 05:13:18,627 WARN L197 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-07 05:13:18,996 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-01-07 05:13:19,462 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-01-07 05:13:20,259 WARN L197 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-01-07 05:13:21,042 WARN L197 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-07 05:13:21,212 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-01-07 05:13:21,700 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-01-07 05:13:22,617 WARN L197 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-01-07 05:13:22,996 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2021-01-07 05:13:23,951 WARN L197 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-01-07 05:13:24,125 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-01-07 05:13:24,839 WARN L197 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-01-07 05:13:25,069 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2021-01-07 05:13:25,229 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-01-07 05:13:25,686 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-01-07 05:13:26,485 WARN L197 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-01-07 05:13:26,776 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-01-07 05:13:27,780 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-01-07 05:13:28,040 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71