/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/list-properties/alternating_list-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:18:26,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:18:26,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:18:26,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:18:26,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:18:26,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:18:26,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:18:26,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:18:26,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:18:26,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:18:26,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:18:26,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:18:26,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:18:26,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:18:26,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:18:26,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:18:26,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:18:26,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:18:26,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:18:26,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:18:26,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:18:26,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:18:26,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:18:26,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:18:26,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 17:18:26,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 17:18:26,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 17:18:26,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 17:18:26,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 17:18:26,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 17:18:26,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:18:26,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:18:26,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:18:26,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:18:26,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:18:26,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:18:26,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:18:26,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:18:26,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:18:26,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:18:26,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:18:26,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:18:26,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:18:26,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:18:26,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:18:26,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:18:26,661 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:18:26,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:18:26,661 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:18:26,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:18:26,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:18:26,662 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:18:26,662 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:18:26,663 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:18:26,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:18:26,663 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:18:26,663 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:18:26,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:18:26,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:18:26,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:18:26,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:18:26,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:18:26,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:18:26,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:18:26,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:18:26,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:18:26,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:18:27,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:18:27,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:18:27,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:18:27,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:18:27,189 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:18:27,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/alternating_list-1.i [2020-12-23 17:18:27,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/912b69c4e/621996117fbd4f70bee15b58aeb8a928/FLAGc1fb46b04 [2020-12-23 17:18:28,069 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:18:28,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-properties/alternating_list-1.i [2020-12-23 17:18:28,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/912b69c4e/621996117fbd4f70bee15b58aeb8a928/FLAGc1fb46b04 [2020-12-23 17:18:28,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/912b69c4e/621996117fbd4f70bee15b58aeb8a928 [2020-12-23 17:18:28,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:18:28,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:18:28,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:18:28,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:18:28,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:18:28,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:28,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b206262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28, skipping insertion in model container [2020-12-23 17:18:28,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:28,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:18:28,371 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~flag~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~flag~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~flag~0,] left hand side expression in assignment: lhs: VariableLHS[~flag~0,] left hand side expression in assignment: lhs: VariableLHS[~flag~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2020-12-23 17:18:28,758 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-properties/alternating_list-1.i[23574,23587] [2020-12-23 17:18:28,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:18:28,774 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~flag~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~flag~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~flag~0,] left hand side expression in assignment: lhs: VariableLHS[~flag~0,] left hand side expression in assignment: lhs: VariableLHS[~flag~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2020-12-23 17:18:28,821 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-properties/alternating_list-1.i[23574,23587] [2020-12-23 17:18:28,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:18:28,889 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:18:28,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28 WrapperNode [2020-12-23 17:18:28,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:18:28,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:18:28,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:18:28,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:18:28,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:28,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:28,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:18:28,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:18:28,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:18:28,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:18:29,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:29,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:29,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:29,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:29,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:29,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:29,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (1/1) ... [2020-12-23 17:18:29,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:18:29,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:18:29,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:18:29,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:18:29,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:18:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 17:18:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:18:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 17:18:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 17:18:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:18:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 17:18:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:18:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:18:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:18:29,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:18:29,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:18:29,727 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-23 17:18:29,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:18:29 BoogieIcfgContainer [2020-12-23 17:18:29,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:18:29,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:18:29,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:18:29,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:18:29,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:18:28" (1/3) ... [2020-12-23 17:18:29,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f96fbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:18:29, skipping insertion in model container [2020-12-23 17:18:29,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:28" (2/3) ... [2020-12-23 17:18:29,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f96fbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:18:29, skipping insertion in model container [2020-12-23 17:18:29,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:18:29" (3/3) ... [2020-12-23 17:18:29,739 INFO L111 eAbstractionObserver]: Analyzing ICFG alternating_list-1.i [2020-12-23 17:18:29,747 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:18:29,753 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-12-23 17:18:29,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-12-23 17:18:29,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:18:29,805 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:18:29,806 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:18:29,806 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:18:29,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:18:29,806 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:18:29,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:18:29,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:18:29,828 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-12-23 17:18:29,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 17:18:29,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:29,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 17:18:29,838 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:29,846 INFO L82 PathProgramCache]: Analyzing trace with hash 889600296, now seen corresponding path program 1 times [2020-12-23 17:18:29,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:29,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790460684] [2020-12-23 17:18:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:30,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790460684] [2020-12-23 17:18:30,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:30,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:18:30,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808099818] [2020-12-23 17:18:30,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 17:18:30,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:30,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 17:18:30,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:18:30,080 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-12-23 17:18:30,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:30,111 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-12-23 17:18:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 17:18:30,113 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-23 17:18:30,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:30,130 INFO L225 Difference]: With dead ends: 74 [2020-12-23 17:18:30,130 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 17:18:30,133 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 [2020-12-23 17:18:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 17:18:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-12-23 17:18:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 17:18:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2020-12-23 17:18:30,209 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 6 [2020-12-23 17:18:30,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:30,209 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2020-12-23 17:18:30,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 17:18:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2020-12-23 17:18:30,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:18:30,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:30,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:30,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:18:30,213 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:30,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:30,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1807769742, now seen corresponding path program 1 times [2020-12-23 17:18:30,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:30,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721429005] [2020-12-23 17:18:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:30,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721429005] [2020-12-23 17:18:30,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:30,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:18:30,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585027351] [2020-12-23 17:18:30,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:18:30,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:30,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:18:30,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:18:30,370 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 4 states. [2020-12-23 17:18:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:30,548 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-12-23 17:18:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:18:30,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 17:18:30,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:30,551 INFO L225 Difference]: With dead ends: 91 [2020-12-23 17:18:30,551 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 17:18:30,552 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 [2020-12-23 17:18:30,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 17:18:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2020-12-23 17:18:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-23 17:18:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2020-12-23 17:18:30,563 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 7 [2020-12-23 17:18:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:30,563 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2020-12-23 17:18:30,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:18:30,564 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2020-12-23 17:18:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:18:30,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:30,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:30,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:18:30,565 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:30,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:30,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1807769743, now seen corresponding path program 1 times [2020-12-23 17:18:30,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:30,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688931069] [2020-12-23 17:18:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:30,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688931069] [2020-12-23 17:18:30,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:30,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:18:30,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129857943] [2020-12-23 17:18:30,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:18:30,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:30,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:18:30,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:18:30,642 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand 4 states. [2020-12-23 17:18:30,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:30,822 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2020-12-23 17:18:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:18:30,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 17:18:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:30,824 INFO L225 Difference]: With dead ends: 99 [2020-12-23 17:18:30,824 INFO L226 Difference]: Without dead ends: 99 [2020-12-23 17:18:30,825 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 [2020-12-23 17:18:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-23 17:18:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2020-12-23 17:18:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 17:18:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2020-12-23 17:18:30,834 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 7 [2020-12-23 17:18:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:30,834 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2020-12-23 17:18:30,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:18:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2020-12-23 17:18:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 17:18:30,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:30,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:30,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:18:30,836 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2106443233, now seen corresponding path program 1 times [2020-12-23 17:18:30,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:30,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015638221] [2020-12-23 17:18:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:30,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015638221] [2020-12-23 17:18:30,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:30,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:18:30,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590326686] [2020-12-23 17:18:30,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:18:30,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:30,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:18:30,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:18:30,881 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand 3 states. [2020-12-23 17:18:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:30,898 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2020-12-23 17:18:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:18:30,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 17:18:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:30,900 INFO L225 Difference]: With dead ends: 136 [2020-12-23 17:18:30,900 INFO L226 Difference]: Without dead ends: 136 [2020-12-23 17:18:30,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:18:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-23 17:18:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2020-12-23 17:18:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 17:18:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 112 transitions. [2020-12-23 17:18:30,910 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 112 transitions. Word has length 14 [2020-12-23 17:18:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:30,911 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 112 transitions. [2020-12-23 17:18:30,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:18:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 112 transitions. [2020-12-23 17:18:30,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 17:18:30,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:30,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:30,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:18:30,912 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:30,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2106751063, now seen corresponding path program 1 times [2020-12-23 17:18:30,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:30,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532326439] [2020-12-23 17:18:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:30,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532326439] [2020-12-23 17:18:30,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:30,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 17:18:30,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183073726] [2020-12-23 17:18:30,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:30,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:30,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:30,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:30,984 INFO L87 Difference]: Start difference. First operand 96 states and 112 transitions. Second operand 6 states. [2020-12-23 17:18:31,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:31,202 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2020-12-23 17:18:31,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:18:31,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-23 17:18:31,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:31,205 INFO L225 Difference]: With dead ends: 141 [2020-12-23 17:18:31,205 INFO L226 Difference]: Without dead ends: 141 [2020-12-23 17:18:31,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:18:31,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-23 17:18:31,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 99. [2020-12-23 17:18:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-23 17:18:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2020-12-23 17:18:31,215 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 14 [2020-12-23 17:18:31,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:31,215 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2020-12-23 17:18:31,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2020-12-23 17:18:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:18:31,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:31,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:31,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:18:31,217 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:31,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:31,218 INFO L82 PathProgramCache]: Analyzing trace with hash -916143496, now seen corresponding path program 1 times [2020-12-23 17:18:31,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:31,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716933032] [2020-12-23 17:18:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:31,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716933032] [2020-12-23 17:18:31,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:31,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:18:31,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433705980] [2020-12-23 17:18:31,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:18:31,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:31,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:18:31,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:18:31,309 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 4 states. [2020-12-23 17:18:31,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:31,411 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2020-12-23 17:18:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:18:31,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-23 17:18:31,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:31,414 INFO L225 Difference]: With dead ends: 106 [2020-12-23 17:18:31,414 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 17:18:31,414 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 [2020-12-23 17:18:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 17:18:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2020-12-23 17:18:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 17:18:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2020-12-23 17:18:31,439 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 15 [2020-12-23 17:18:31,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:31,440 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2020-12-23 17:18:31,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:18:31,440 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2020-12-23 17:18:31,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:18:31,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:31,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:31,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:18:31,443 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:31,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:31,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1664368567, now seen corresponding path program 1 times [2020-12-23 17:18:31,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:31,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601213714] [2020-12-23 17:18:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:31,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601213714] [2020-12-23 17:18:31,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:31,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 17:18:31,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372688127] [2020-12-23 17:18:31,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:18:31,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:31,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:18:31,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:18:31,509 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand 7 states. [2020-12-23 17:18:31,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:31,742 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2020-12-23 17:18:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:18:31,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-23 17:18:31,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:31,744 INFO L225 Difference]: With dead ends: 116 [2020-12-23 17:18:31,744 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 17:18:31,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:18:31,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 17:18:31,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2020-12-23 17:18:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 17:18:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2020-12-23 17:18:31,750 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 16 [2020-12-23 17:18:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:31,751 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2020-12-23 17:18:31,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:18:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2020-12-23 17:18:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:18:31,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:31,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:31,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:18:31,753 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:31,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash 54401118, now seen corresponding path program 1 times [2020-12-23 17:18:31,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:31,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425043032] [2020-12-23 17:18:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:31,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425043032] [2020-12-23 17:18:31,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:31,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:18:31,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018357812] [2020-12-23 17:18:31,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:18:31,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:31,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:18:31,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:18:31,878 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand 5 states. [2020-12-23 17:18:32,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:32,014 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2020-12-23 17:18:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:18:32,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 17:18:32,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:32,016 INFO L225 Difference]: With dead ends: 110 [2020-12-23 17:18:32,016 INFO L226 Difference]: Without dead ends: 99 [2020-12-23 17:18:32,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:18:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-23 17:18:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-12-23 17:18:32,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-23 17:18:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2020-12-23 17:18:32,020 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 17 [2020-12-23 17:18:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:32,021 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2020-12-23 17:18:32,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:18:32,021 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2020-12-23 17:18:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:18:32,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:32,022 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:32,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 17:18:32,022 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:32,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:32,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1609090789, now seen corresponding path program 1 times [2020-12-23 17:18:32,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:32,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780994655] [2020-12-23 17:18:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:32,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780994655] [2020-12-23 17:18:32,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:32,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:18:32,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629931811] [2020-12-23 17:18:32,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:32,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:32,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:32,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:32,072 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand 6 states. [2020-12-23 17:18:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:32,208 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2020-12-23 17:18:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:18:32,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 17:18:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:32,209 INFO L225 Difference]: With dead ends: 104 [2020-12-23 17:18:32,209 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 17:18:32,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:18:32,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 17:18:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-12-23 17:18:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 17:18:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-12-23 17:18:32,214 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 17 [2020-12-23 17:18:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:32,214 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-12-23 17:18:32,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-12-23 17:18:32,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:18:32,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:32,215 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:32,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 17:18:32,216 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:32,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1609090788, now seen corresponding path program 1 times [2020-12-23 17:18:32,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:32,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701482063] [2020-12-23 17:18:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:32,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701482063] [2020-12-23 17:18:32,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:32,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:18:32,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377569850] [2020-12-23 17:18:32,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:32,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:32,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:32,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:32,283 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 6 states. [2020-12-23 17:18:32,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:32,492 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2020-12-23 17:18:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:18:32,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 17:18:32,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:32,494 INFO L225 Difference]: With dead ends: 92 [2020-12-23 17:18:32,494 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 17:18:32,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:18:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 17:18:32,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-12-23 17:18:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 17:18:32,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2020-12-23 17:18:32,497 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 17 [2020-12-23 17:18:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:32,498 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2020-12-23 17:18:32,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2020-12-23 17:18:32,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 17:18:32,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:32,499 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:32,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 17:18:32,499 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:32,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:32,500 INFO L82 PathProgramCache]: Analyzing trace with hash 372860540, now seen corresponding path program 1 times [2020-12-23 17:18:32,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:32,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040643261] [2020-12-23 17:18:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:32,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040643261] [2020-12-23 17:18:32,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216291496] [2020-12-23 17:18:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:18:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:32,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 17:18:32,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:18:32,860 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 11 treesize of output 7 [2020-12-23 17:18:32,869 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:32,896 INFO L625 ElimStorePlain]: treesize reduction 3, result has 85.0 percent of original size [2020-12-23 17:18:32,899 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:32,900 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:17 [2020-12-23 17:18:33,018 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_12|], 2=[|v_#memory_int_15|]} [2020-12-23 17:18:33,030 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 [2020-12-23 17:18:33,031 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:33,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:33,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:18:33,052 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 11 [2020-12-23 17:18:33,054 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:33,062 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:33,064 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:33,065 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:49, output treesize:26 [2020-12-23 17:18:33,112 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 [2020-12-23 17:18:33,113 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:33,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:33,119 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:33,120 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:14 [2020-12-23 17:18:33,190 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:33,191 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 34 [2020-12-23 17:18:33,194 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:33,210 INFO L625 ElimStorePlain]: treesize reduction 12, result has 64.7 percent of original size [2020-12-23 17:18:33,214 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:33,218 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. [2020-12-23 17:18:33,218 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:22 [2020-12-23 17:18:33,220 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:33,279 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:33,434 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-12-23 17:18:33,435 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:33,553 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:33,554 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 22 treesize of output 18 [2020-12-23 17:18:33,558 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:33,562 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:33,564 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:33,565 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:3 [2020-12-23 17:18:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:33,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:18:33,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2020-12-23 17:18:33,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200667707] [2020-12-23 17:18:33,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 17:18:33,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:33,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 17:18:33,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2020-12-23 17:18:33,574 INFO L87 Difference]: Start difference. First operand 84 states and 97 transitions. Second operand 24 states. [2020-12-23 17:18:36,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:36,152 INFO L93 Difference]: Finished difference Result 266 states and 281 transitions. [2020-12-23 17:18:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 17:18:36,153 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2020-12-23 17:18:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:36,155 INFO L225 Difference]: With dead ends: 266 [2020-12-23 17:18:36,155 INFO L226 Difference]: Without dead ends: 266 [2020-12-23 17:18:36,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=495, Invalid=2261, Unknown=0, NotChecked=0, Total=2756 [2020-12-23 17:18:36,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-23 17:18:36,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 101. [2020-12-23 17:18:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-23 17:18:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2020-12-23 17:18:36,162 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 24 [2020-12-23 17:18:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:36,162 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2020-12-23 17:18:36,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 17:18:36,162 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2020-12-23 17:18:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 17:18:36,163 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:36,163 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:18:36,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 17:18:36,378 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:36,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:36,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1836717490, now seen corresponding path program 1 times [2020-12-23 17:18:36,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:36,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788073141] [2020-12-23 17:18:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:36,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788073141] [2020-12-23 17:18:36,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250224514] [2020-12-23 17:18:36,583 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 [2020-12-23 17:18:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:36,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 17:18:36,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:18:36,744 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 [2020-12-23 17:18:36,745 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:36,752 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:36,754 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:36,754 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-12-23 17:18:36,791 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 [2020-12-23 17:18:36,792 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:36,804 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:36,808 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 [2020-12-23 17:18:36,809 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:36,836 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:36,838 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:36,838 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:30 [2020-12-23 17:18:36,882 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 15 treesize of output 7 [2020-12-23 17:18:36,884 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:36,889 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:36,890 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:36,890 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:16 [2020-12-23 17:18:36,959 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 11 treesize of output 7 [2020-12-23 17:18:36,960 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:36,967 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:36,977 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 [2020-12-23 17:18:36,983 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:36,988 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:36,990 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. [2020-12-23 17:18:36,991 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:20 [2020-12-23 17:18:37,081 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:37,081 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 15 treesize of output 15 [2020-12-23 17:18:37,083 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:18:37,091 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:37,094 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:37,095 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:13 [2020-12-23 17:18:37,114 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 17 treesize of output 9 [2020-12-23 17:18:37,115 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:37,117 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:37,118 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:37,118 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2020-12-23 17:18:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:37,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:18:37,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2020-12-23 17:18:37,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459446139] [2020-12-23 17:18:37,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 17:18:37,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:37,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 17:18:37,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2020-12-23 17:18:37,127 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 22 states. [2020-12-23 17:18:38,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:38,783 INFO L93 Difference]: Finished difference Result 231 states and 248 transitions. [2020-12-23 17:18:38,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 17:18:38,784 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26 [2020-12-23 17:18:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:38,785 INFO L225 Difference]: With dead ends: 231 [2020-12-23 17:18:38,786 INFO L226 Difference]: Without dead ends: 231 [2020-12-23 17:18:38,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=367, Invalid=1525, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 17:18:38,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-12-23 17:18:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 104. [2020-12-23 17:18:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-23 17:18:38,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2020-12-23 17:18:38,792 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 26 [2020-12-23 17:18:38,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:38,792 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2020-12-23 17:18:38,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 17:18:38,792 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2020-12-23 17:18:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 17:18:38,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:38,794 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:18:39,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 17:18:39,009 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:39,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:39,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1836717491, now seen corresponding path program 1 times [2020-12-23 17:18:39,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:39,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463394613] [2020-12-23 17:18:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:39,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463394613] [2020-12-23 17:18:39,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092872818] [2020-12-23 17:18:39,331 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 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 [2020-12-23 17:18:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:39,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-23 17:18:39,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:18:39,457 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 [2020-12-23 17:18:39,458 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,467 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,468 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,468 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-12-23 17:18:39,512 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 [2020-12-23 17:18:39,513 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,531 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 [2020-12-23 17:18:39,532 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,547 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,549 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,550 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:30 [2020-12-23 17:18:39,667 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_18|], 2=[|v_#memory_$Pointer$.offset_15|, |v_#memory_$Pointer$.base_15|]} [2020-12-23 17:18:39,672 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 23 treesize of output 15 [2020-12-23 17:18:39,673 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,688 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,707 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,708 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 111 [2020-12-23 17:18:39,712 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,722 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,727 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2020-12-23 17:18:39,730 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,739 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,739 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:113, output treesize:31 [2020-12-23 17:18:39,811 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,812 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 [2020-12-23 17:18:39,813 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:18:39,823 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,824 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,824 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:32 [2020-12-23 17:18:39,946 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 [2020-12-23 17:18:39,948 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,956 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,959 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 [2020-12-23 17:18:39,961 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,966 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:39,969 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:39,969 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:9 [2020-12-23 17:18:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:39,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:18:39,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2020-12-23 17:18:39,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419869350] [2020-12-23 17:18:39,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 17:18:39,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:39,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 17:18:39,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2020-12-23 17:18:39,982 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand 24 states. [2020-12-23 17:18:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:41,521 INFO L93 Difference]: Finished difference Result 277 states and 294 transitions. [2020-12-23 17:18:41,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 17:18:41,522 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 26 [2020-12-23 17:18:41,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:41,524 INFO L225 Difference]: With dead ends: 277 [2020-12-23 17:18:41,525 INFO L226 Difference]: Without dead ends: 277 [2020-12-23 17:18:41,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=330, Invalid=1476, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 17:18:41,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-12-23 17:18:41,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 109. [2020-12-23 17:18:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 17:18:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 126 transitions. [2020-12-23 17:18:41,532 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 126 transitions. Word has length 26 [2020-12-23 17:18:41,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:41,532 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 126 transitions. [2020-12-23 17:18:41,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 17:18:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 126 transitions. [2020-12-23 17:18:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 17:18:41,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:41,534 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:18:41,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 17:18:41,748 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:41,749 INFO L82 PathProgramCache]: Analyzing trace with hash -159834080, now seen corresponding path program 1 times [2020-12-23 17:18:41,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:41,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652245940] [2020-12-23 17:18:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:42,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652245940] [2020-12-23 17:18:42,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130776630] [2020-12-23 17:18:42,054 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 [2020-12-23 17:18:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:42,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-23 17:18:42,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:18:42,199 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 [2020-12-23 17:18:42,200 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,210 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:42,214 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 [2020-12-23 17:18:42,215 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,224 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:42,225 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,226 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:19 [2020-12-23 17:18:42,358 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_19|], 2=[|v_#memory_$Pointer$.base_17|, |v_#memory_$Pointer$.offset_17|]} [2020-12-23 17:18:42,364 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 23 treesize of output 15 [2020-12-23 17:18:42,365 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,378 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:42,382 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 64 [2020-12-23 17:18:42,384 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,394 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:42,409 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:42,410 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 84 [2020-12-23 17:18:42,412 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,417 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:42,418 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,418 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:104, output treesize:22 [2020-12-23 17:18:42,564 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 11 [2020-12-23 17:18:42,569 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,577 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:42,588 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 15 treesize of output 7 [2020-12-23 17:18:42,590 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,596 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:42,600 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. [2020-12-23 17:18:42,601 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:18 [2020-12-23 17:18:42,710 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:42,717 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 22 treesize of output 18 [2020-12-23 17:18:42,720 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:42,726 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:42,727 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:3 [2020-12-23 17:18:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:42,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:18:42,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 27 [2020-12-23 17:18:42,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859314712] [2020-12-23 17:18:42,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 17:18:42,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:42,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 17:18:42,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2020-12-23 17:18:42,741 INFO L87 Difference]: Start difference. First operand 109 states and 126 transitions. Second operand 27 states. [2020-12-23 17:18:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:44,033 INFO L93 Difference]: Finished difference Result 196 states and 205 transitions. [2020-12-23 17:18:44,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 17:18:44,033 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 31 [2020-12-23 17:18:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:44,035 INFO L225 Difference]: With dead ends: 196 [2020-12-23 17:18:44,035 INFO L226 Difference]: Without dead ends: 196 [2020-12-23 17:18:44,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=299, Invalid=1771, Unknown=0, NotChecked=0, Total=2070 [2020-12-23 17:18:44,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-23 17:18:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 105. [2020-12-23 17:18:44,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-23 17:18:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-12-23 17:18:44,040 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 31 [2020-12-23 17:18:44,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:44,041 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-12-23 17:18:44,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 17:18:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-12-23 17:18:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 17:18:44,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:44,042 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:18:44,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:18:44,258 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:44,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:44,260 INFO L82 PathProgramCache]: Analyzing trace with hash -249976456, now seen corresponding path program 1 times [2020-12-23 17:18:44,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:44,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220425910] [2020-12-23 17:18:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 17:18:44,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220425910] [2020-12-23 17:18:44,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:44,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:18:44,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014887976] [2020-12-23 17:18:44,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:18:44,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:44,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:18:44,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:18:44,314 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 5 states. [2020-12-23 17:18:44,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:44,392 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-12-23 17:18:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:18:44,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-23 17:18:44,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:44,394 INFO L225 Difference]: With dead ends: 113 [2020-12-23 17:18:44,395 INFO L226 Difference]: Without dead ends: 113 [2020-12-23 17:18:44,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:18:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-23 17:18:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2020-12-23 17:18:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-23 17:18:44,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-12-23 17:18:44,402 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 33 [2020-12-23 17:18:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:44,403 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-12-23 17:18:44,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:18:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-12-23 17:18:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 17:18:44,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:44,410 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:18:44,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 17:18:44,410 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:44,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:44,411 INFO L82 PathProgramCache]: Analyzing trace with hash 839247549, now seen corresponding path program 1 times [2020-12-23 17:18:44,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:44,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948945694] [2020-12-23 17:18:44,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:18:44,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948945694] [2020-12-23 17:18:44,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505521736] [2020-12-23 17:18:44,500 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 [2020-12-23 17:18:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:44,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 17:18:44,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:18:44,694 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:44,695 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 15 treesize of output 15 [2020-12-23 17:18:44,698 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:18:44,704 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:44,706 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:44,706 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:12 [2020-12-23 17:18:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:44,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:18:44,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2020-12-23 17:18:44,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765011521] [2020-12-23 17:18:44,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 17:18:44,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:44,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 17:18:44,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-12-23 17:18:44,761 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 16 states. [2020-12-23 17:18:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:45,314 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2020-12-23 17:18:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 17:18:45,314 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-12-23 17:18:45,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:45,315 INFO L225 Difference]: With dead ends: 124 [2020-12-23 17:18:45,315 INFO L226 Difference]: Without dead ends: 124 [2020-12-23 17:18:45,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2020-12-23 17:18:45,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-23 17:18:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2020-12-23 17:18:45,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-23 17:18:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2020-12-23 17:18:45,320 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 34 [2020-12-23 17:18:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:45,320 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2020-12-23 17:18:45,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 17:18:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2020-12-23 17:18:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 17:18:45,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:45,321 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:18:45,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 17:18:45,537 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:45,538 INFO L82 PathProgramCache]: Analyzing trace with hash 840664604, now seen corresponding path program 1 times [2020-12-23 17:18:45,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:45,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121013431] [2020-12-23 17:18:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 17:18:45,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121013431] [2020-12-23 17:18:45,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:45,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:18:45,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673390668] [2020-12-23 17:18:45,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:18:45,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:45,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:18:45,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:18:45,627 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand 5 states. [2020-12-23 17:18:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:45,749 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2020-12-23 17:18:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:18:45,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-12-23 17:18:45,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:45,750 INFO L225 Difference]: With dead ends: 114 [2020-12-23 17:18:45,751 INFO L226 Difference]: Without dead ends: 114 [2020-12-23 17:18:45,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:18:45,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-23 17:18:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2020-12-23 17:18:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-23 17:18:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2020-12-23 17:18:45,754 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 34 [2020-12-23 17:18:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:45,755 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2020-12-23 17:18:45,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:18:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2020-12-23 17:18:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 17:18:45,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:45,756 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:45,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 17:18:45,756 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:45,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:45,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1278797425, now seen corresponding path program 2 times [2020-12-23 17:18:45,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:45,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210264311] [2020-12-23 17:18:45,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:45,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210264311] [2020-12-23 17:18:45,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:45,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:18:45,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817230094] [2020-12-23 17:18:45,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:18:45,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:45,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:18:45,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:18:45,788 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand 3 states. [2020-12-23 17:18:45,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:45,797 INFO L93 Difference]: Finished difference Result 142 states and 149 transitions. [2020-12-23 17:18:45,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:18:45,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-23 17:18:45,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:45,798 INFO L225 Difference]: With dead ends: 142 [2020-12-23 17:18:45,799 INFO L226 Difference]: Without dead ends: 142 [2020-12-23 17:18:45,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:18:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-23 17:18:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 108. [2020-12-23 17:18:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-23 17:18:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2020-12-23 17:18:45,803 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 34 [2020-12-23 17:18:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:45,803 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2020-12-23 17:18:45,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:18:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2020-12-23 17:18:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 17:18:45,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:45,804 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:18:45,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 17:18:45,804 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:45,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:45,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2090388873, now seen corresponding path program 1 times [2020-12-23 17:18:45,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:45,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385432468] [2020-12-23 17:18:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:46,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385432468] [2020-12-23 17:18:46,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119297397] [2020-12-23 17:18:46,073 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 [2020-12-23 17:18:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:46,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-23 17:18:46,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:18:46,152 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 [2020-12-23 17:18:46,153 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,157 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,158 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,158 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:18:46,228 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 11 treesize of output 7 [2020-12-23 17:18:46,229 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,248 INFO L625 ElimStorePlain]: treesize reduction 8, result has 73.3 percent of original size [2020-12-23 17:18:46,249 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,249 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:22 [2020-12-23 17:18:46,292 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,293 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 [2020-12-23 17:18:46,295 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,297 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,305 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,306 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:21 [2020-12-23 17:18:46,349 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_18|], 2=[|v_#memory_int_21|]} [2020-12-23 17:18:46,353 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 [2020-12-23 17:18:46,354 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:18:46,372 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 11 [2020-12-23 17:18:46,373 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,382 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,384 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,384 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:53, output treesize:27 [2020-12-23 17:18:46,419 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 20 treesize of output 8 [2020-12-23 17:18:46,420 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,425 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,426 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,426 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:15 [2020-12-23 17:18:46,490 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 19 treesize of output 18 [2020-12-23 17:18:46,492 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,499 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,500 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,500 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-12-23 17:18:46,570 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_18|], 6=[|v_#memory_int_23|]} [2020-12-23 17:18:46,574 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 [2020-12-23 17:18:46,576 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,587 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:18:46,592 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 34 treesize of output 21 [2020-12-23 17:18:46,594 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,603 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,604 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,604 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:54, output treesize:31 [2020-12-23 17:18:46,650 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 19 treesize of output 7 [2020-12-23 17:18:46,651 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,659 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,662 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. [2020-12-23 17:18:46,662 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:25 [2020-12-23 17:18:46,810 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:46,810 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 2 case distinctions, treesize of input 26 treesize of output 68 [2020-12-23 17:18:46,813 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:46,847 INFO L625 ElimStorePlain]: treesize reduction 28, result has 59.4 percent of original size [2020-12-23 17:18:46,851 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:18:46,853 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,855 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,858 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:18:46,859 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,861 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,863 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:18:46,865 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,868 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:18:46,869 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 17:18:46,870 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:37 [2020-12-23 17:18:46,873 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:18:46,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,875 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,877 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:18:46,878 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,879 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,881 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:18:46,882 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,884 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:18:46,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:18:46,945 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,947 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:46,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:18:46,951 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:18:46,953 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:47,177 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-12-23 17:18:47,177 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:18:47,280 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 22 treesize of output 10 [2020-12-23 17:18:47,282 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:47,286 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:47,288 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:47,288 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2020-12-23 17:18:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:47,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:18:47,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 33 [2020-12-23 17:18:47,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195340086] [2020-12-23 17:18:47,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 17:18:47,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:47,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 17:18:47,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 17:18:47,323 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 33 states. [2020-12-23 17:19:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:02,612 INFO L93 Difference]: Finished difference Result 241 states and 248 transitions. [2020-12-23 17:19:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-23 17:19:02,612 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 34 [2020-12-23 17:19:02,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:02,614 INFO L225 Difference]: With dead ends: 241 [2020-12-23 17:19:02,614 INFO L226 Difference]: Without dead ends: 241 [2020-12-23 17:19:02,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=724, Invalid=4532, Unknown=0, NotChecked=0, Total=5256 [2020-12-23 17:19:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-23 17:19:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 112. [2020-12-23 17:19:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-23 17:19:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2020-12-23 17:19:02,620 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 34 [2020-12-23 17:19:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:02,621 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2020-12-23 17:19:02,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-23 17:19:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2020-12-23 17:19:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 17:19:02,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:02,622 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:19:02,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:19:02,836 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:02,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:02,837 INFO L82 PathProgramCache]: Analyzing trace with hash 290799098, now seen corresponding path program 1 times [2020-12-23 17:19:02,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:02,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803295878] [2020-12-23 17:19:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:19:02,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803295878] [2020-12-23 17:19:02,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477895885] [2020-12-23 17:19:02,892 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 [2020-12-23 17:19:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:02,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 17:19:02,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:19:03,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:03,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2020-12-23 17:19:03,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523342006] [2020-12-23 17:19:03,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:19:03,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:03,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:19:03,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:19:03,008 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand 7 states. [2020-12-23 17:19:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:03,158 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2020-12-23 17:19:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 17:19:03,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-23 17:19:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:03,160 INFO L225 Difference]: With dead ends: 116 [2020-12-23 17:19:03,160 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 17:19:03,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:19:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 17:19:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2020-12-23 17:19:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 17:19:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-12-23 17:19:03,167 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 35 [2020-12-23 17:19:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:03,167 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-12-23 17:19:03,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:19:03,167 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-12-23 17:19:03,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 17:19:03,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:03,168 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:19:03,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:19:03,384 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:03,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:03,385 INFO L82 PathProgramCache]: Analyzing trace with hash 424837581, now seen corresponding path program 1 times [2020-12-23 17:19:03,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:03,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086407545] [2020-12-23 17:19:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:03,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086407545] [2020-12-23 17:19:03,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816867144] [2020-12-23 17:19:03,653 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 [2020-12-23 17:19:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:03,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 17:19:03,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:03,778 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 [2020-12-23 17:19:03,779 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:03,785 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:03,786 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:03,786 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-12-23 17:19:03,823 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 [2020-12-23 17:19:03,824 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:03,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:03,840 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 [2020-12-23 17:19:03,841 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:03,851 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:03,853 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:03,853 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:30 [2020-12-23 17:19:03,893 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 15 treesize of output 7 [2020-12-23 17:19:03,894 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:03,901 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:03,902 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:03,903 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:23 [2020-12-23 17:19:03,996 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 38 [2020-12-23 17:19:03,997 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:04,003 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:04,005 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 19 treesize of output 11 [2020-12-23 17:19:04,006 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:04,012 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:04,012 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:04,013 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:59, output treesize:24 [2020-12-23 17:19:04,103 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:04,104 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 [2020-12-23 17:19:04,105 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:19:04,112 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:04,113 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:04,113 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:25 [2020-12-23 17:19:04,228 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 [2020-12-23 17:19:04,229 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:04,233 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:04,234 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:04,234 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:10 [2020-12-23 17:19:04,261 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:04,261 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 16 treesize of output 32 [2020-12-23 17:19:04,263 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:04,270 INFO L625 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2020-12-23 17:19:04,271 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:19:04,271 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:11 [2020-12-23 17:19:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:04,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:04,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 28 [2020-12-23 17:19:04,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006813323] [2020-12-23 17:19:04,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-23 17:19:04,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:04,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-23 17:19:04,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2020-12-23 17:19:04,313 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 29 states. [2020-12-23 17:19:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:06,150 INFO L93 Difference]: Finished difference Result 178 states and 185 transitions. [2020-12-23 17:19:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 17:19:06,151 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 36 [2020-12-23 17:19:06,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:06,153 INFO L225 Difference]: With dead ends: 178 [2020-12-23 17:19:06,153 INFO L226 Difference]: Without dead ends: 178 [2020-12-23 17:19:06,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=401, Invalid=2149, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 17:19:06,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-23 17:19:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 120. [2020-12-23 17:19:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-23 17:19:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2020-12-23 17:19:06,159 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 36 [2020-12-23 17:19:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:06,159 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2020-12-23 17:19:06,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-23 17:19:06,159 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2020-12-23 17:19:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 17:19:06,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:06,160 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:19:06,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 17:19:06,372 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:06,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:06,373 INFO L82 PathProgramCache]: Analyzing trace with hash 424837582, now seen corresponding path program 1 times [2020-12-23 17:19:06,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:06,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724671577] [2020-12-23 17:19:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:06,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724671577] [2020-12-23 17:19:06,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194819329] [2020-12-23 17:19:06,647 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 [2020-12-23 17:19:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:06,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 17:19:06,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:06,779 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 [2020-12-23 17:19:06,780 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:06,788 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:06,789 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:06,789 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-12-23 17:19:06,820 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 [2020-12-23 17:19:06,821 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:06,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:06,834 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 [2020-12-23 17:19:06,835 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:06,844 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:06,845 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:06,845 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:30 [2020-12-23 17:19:06,878 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 15 treesize of output 7 [2020-12-23 17:19:06,879 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:06,883 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:06,884 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:06,884 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:16 [2020-12-23 17:19:06,937 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 [2020-12-23 17:19:06,945 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:06,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:06,954 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 11 treesize of output 7 [2020-12-23 17:19:06,955 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:06,960 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:06,961 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. [2020-12-23 17:19:06,962 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:20 [2020-12-23 17:19:07,065 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:19:07,068 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:07,068 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 15 treesize of output 15 [2020-12-23 17:19:07,070 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:19:07,080 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:07,082 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:07,082 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:19 [2020-12-23 17:19:07,284 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 32 treesize of output 20 [2020-12-23 17:19:07,285 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:07,293 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:07,295 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 26 treesize of output 14 [2020-12-23 17:19:07,297 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:07,302 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:07,303 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:07,303 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:46, output treesize:16 [2020-12-23 17:19:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:07,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:07,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2020-12-23 17:19:07,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758268441] [2020-12-23 17:19:07,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-23 17:19:07,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:07,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-23 17:19:07,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-12-23 17:19:07,372 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand 30 states. [2020-12-23 17:19:09,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:09,208 INFO L93 Difference]: Finished difference Result 196 states and 202 transitions. [2020-12-23 17:19:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 17:19:09,211 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2020-12-23 17:19:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:09,213 INFO L225 Difference]: With dead ends: 196 [2020-12-23 17:19:09,214 INFO L226 Difference]: Without dead ends: 196 [2020-12-23 17:19:09,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=378, Invalid=1878, Unknown=0, NotChecked=0, Total=2256 [2020-12-23 17:19:09,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-23 17:19:09,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 123. [2020-12-23 17:19:09,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-23 17:19:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2020-12-23 17:19:09,219 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 36 [2020-12-23 17:19:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:09,219 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2020-12-23 17:19:09,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-23 17:19:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2020-12-23 17:19:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 17:19:09,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:09,220 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:19:09,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:19:09,437 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:09,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1180963457, now seen corresponding path program 1 times [2020-12-23 17:19:09,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:09,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966353508] [2020-12-23 17:19:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:09,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966353508] [2020-12-23 17:19:09,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54172418] [2020-12-23 17:19:09,725 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 [2020-12-23 17:19:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:09,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-23 17:19:09,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:09,800 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 [2020-12-23 17:19:09,800 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:09,803 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:09,804 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:09,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:19:09,931 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:09,932 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:19:09,934 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:09,937 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:09,947 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:09,948 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:09,948 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:24 [2020-12-23 17:19:09,996 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 [2020-12-23 17:19:09,997 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,009 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,011 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,011 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:36 [2020-12-23 17:19:10,147 INFO L348 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2020-12-23 17:19:10,147 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 46 treesize of output 32 [2020-12-23 17:19:10,150 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,158 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,159 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,160 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:27 [2020-12-23 17:19:10,222 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,222 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 99 [2020-12-23 17:19:10,225 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:19:10,226 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:10,231 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,248 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,249 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,249 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:61 [2020-12-23 17:19:10,307 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_21|], 2=[|v_#memory_$Pointer$.base_25|]} [2020-12-23 17:19:10,312 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 [2020-12-23 17:19:10,313 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,332 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,355 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,355 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 1 case distinctions, treesize of input 54 treesize of output 69 [2020-12-23 17:19:10,358 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,376 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,378 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,378 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:84, output treesize:67 [2020-12-23 17:19:10,437 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 31 treesize of output 7 [2020-12-23 17:19:10,438 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,457 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,459 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. [2020-12-23 17:19:10,460 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:130, output treesize:103 [2020-12-23 17:19:10,598 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_27|], 6=[|v_#memory_$Pointer$.base_26|]} [2020-12-23 17:19:10,602 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2020-12-23 17:19:10,603 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,624 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:19:10,650 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,651 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 115 [2020-12-23 17:19:10,654 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-23 17:19:10,655 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:19:10,657 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,672 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,674 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. [2020-12-23 17:19:10,674 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:171, output treesize:104 [2020-12-23 17:19:10,858 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 27 treesize of output 7 [2020-12-23 17:19:10,860 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:10,875 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,878 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. [2020-12-23 17:19:10,879 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:111, output treesize:85 [2020-12-23 17:19:10,968 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,969 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 43 [2020-12-23 17:19:10,973 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:19:10,983 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:10,990 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. [2020-12-23 17:19:10,990 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:77, output treesize:28 [2020-12-23 17:19:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:11,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:11,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2020-12-23 17:19:11,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816415578] [2020-12-23 17:19:11,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 17:19:11,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:11,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 17:19:11,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 17:19:11,123 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 33 states. [2020-12-23 17:19:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:14,347 INFO L93 Difference]: Finished difference Result 236 states and 246 transitions. [2020-12-23 17:19:14,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 17:19:14,347 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 36 [2020-12-23 17:19:14,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:14,349 INFO L225 Difference]: With dead ends: 236 [2020-12-23 17:19:14,349 INFO L226 Difference]: Without dead ends: 236 [2020-12-23 17:19:14,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=569, Invalid=3091, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 17:19:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-12-23 17:19:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 143. [2020-12-23 17:19:14,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-23 17:19:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 156 transitions. [2020-12-23 17:19:14,354 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 156 transitions. Word has length 36 [2020-12-23 17:19:14,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:14,354 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 156 transitions. [2020-12-23 17:19:14,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-23 17:19:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 156 transitions. [2020-12-23 17:19:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 17:19:14,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:14,355 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:19:14,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:19:14,568 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1180963456, now seen corresponding path program 1 times [2020-12-23 17:19:14,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:14,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830210133] [2020-12-23 17:19:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:14,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830210133] [2020-12-23 17:19:14,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333012473] [2020-12-23 17:19:14,976 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 [2020-12-23 17:19:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:15,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-23 17:19:15,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:15,077 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 [2020-12-23 17:19:15,078 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,082 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,083 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,083 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:19:15,211 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,212 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 [2020-12-23 17:19:15,215 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:15,217 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,228 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,228 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,229 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:20 [2020-12-23 17:19:15,248 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 [2020-12-23 17:19:15,248 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,261 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,265 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 [2020-12-23 17:19:15,266 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,278 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,279 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,280 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:29 [2020-12-23 17:19:15,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:19:15,409 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 [2020-12-23 17:19:15,411 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,422 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,455 INFO L348 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2020-12-23 17:19:15,455 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 23 [2020-12-23 17:19:15,457 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,467 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,468 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,468 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:59, output treesize:25 [2020-12-23 17:19:15,562 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 [2020-12-23 17:19:15,564 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,587 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 [2020-12-23 17:19:15,588 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,603 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,605 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,605 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:58, output treesize:41 [2020-12-23 17:19:15,824 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_28|], 2=[|v_#memory_$Pointer$.base_30|], 6=[|v_#memory_$Pointer$.offset_25|]} [2020-12-23 17:19:15,830 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 21 treesize of output 17 [2020-12-23 17:19:15,831 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,856 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,876 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,876 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 128 [2020-12-23 17:19:15,879 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:19:15,880 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:19:15,881 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:19:15,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:19:15,886 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,909 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,948 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:15,949 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 122 [2020-12-23 17:19:15,951 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:15,986 INFO L625 ElimStorePlain]: treesize reduction 46, result has 53.5 percent of original size [2020-12-23 17:19:15,988 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:19:15,988 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:137, output treesize:53 [2020-12-23 17:19:16,170 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:16,170 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 15 treesize of output 15 [2020-12-23 17:19:16,172 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:19:16,188 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:16,190 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:19:16,191 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:60, output treesize:46 [2020-12-23 17:19:16,271 INFO L443 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.base|], 2=[|#memory_$Pointer$.offset|]} [2020-12-23 17:19:16,274 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 40 treesize of output 24 [2020-12-23 17:19:16,276 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:16,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:16,290 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 [2020-12-23 17:19:16,292 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:16,298 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:16,301 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:16,301 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:57, output treesize:9 [2020-12-23 17:19:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:16,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:16,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 31 [2020-12-23 17:19:16,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498678609] [2020-12-23 17:19:16,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-23 17:19:16,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:16,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-23 17:19:16,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2020-12-23 17:19:16,319 INFO L87 Difference]: Start difference. First operand 143 states and 156 transitions. Second operand 32 states. [2020-12-23 17:19:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:20,200 INFO L93 Difference]: Finished difference Result 282 states and 293 transitions. [2020-12-23 17:19:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 17:19:20,201 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 36 [2020-12-23 17:19:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:20,204 INFO L225 Difference]: With dead ends: 282 [2020-12-23 17:19:20,204 INFO L226 Difference]: Without dead ends: 282 [2020-12-23 17:19:20,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=521, Invalid=3511, Unknown=0, NotChecked=0, Total=4032 [2020-12-23 17:19:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-23 17:19:20,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 148. [2020-12-23 17:19:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-23 17:19:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 162 transitions. [2020-12-23 17:19:20,211 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 162 transitions. Word has length 36 [2020-12-23 17:19:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:20,211 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 162 transitions. [2020-12-23 17:19:20,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-23 17:19:20,211 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 162 transitions. [2020-12-23 17:19:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 17:19:20,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:20,212 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:19:20,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 17:19:20,424 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash -932167743, now seen corresponding path program 1 times [2020-12-23 17:19:20,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:20,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480681402] [2020-12-23 17:19:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:20,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480681402] [2020-12-23 17:19:20,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878959489] [2020-12-23 17:19:20,692 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 [2020-12-23 17:19:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:20,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 17:19:20,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:20,866 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 [2020-12-23 17:19:20,867 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:20,879 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:20,884 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 [2020-12-23 17:19:20,885 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:20,897 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:20,903 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:20,904 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:28 [2020-12-23 17:19:20,943 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 15 treesize of output 7 [2020-12-23 17:19:20,944 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:20,950 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:20,951 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:20,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:14 [2020-12-23 17:19:21,010 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 [2020-12-23 17:19:21,011 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:21,019 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:21,023 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 11 treesize of output 7 [2020-12-23 17:19:21,023 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:21,029 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:21,030 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. [2020-12-23 17:19:21,031 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:18 [2020-12-23 17:19:21,134 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:21,135 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 15 treesize of output 15 [2020-12-23 17:19:21,136 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:19:21,143 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:21,145 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:21,146 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:11 [2020-12-23 17:19:21,193 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 17 treesize of output 9 [2020-12-23 17:19:21,194 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:21,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:21,196 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:21,197 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2020-12-23 17:19:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:21,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:21,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2020-12-23 17:19:21,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040113273] [2020-12-23 17:19:21,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 17:19:21,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:21,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 17:19:21,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-12-23 17:19:21,212 INFO L87 Difference]: Start difference. First operand 148 states and 162 transitions. Second operand 23 states. [2020-12-23 17:19:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:22,593 INFO L93 Difference]: Finished difference Result 206 states and 215 transitions. [2020-12-23 17:19:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 17:19:22,594 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 39 [2020-12-23 17:19:22,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:22,596 INFO L225 Difference]: With dead ends: 206 [2020-12-23 17:19:22,596 INFO L226 Difference]: Without dead ends: 206 [2020-12-23 17:19:22,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=292, Invalid=1430, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 17:19:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-23 17:19:22,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-12-23 17:19:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-23 17:19:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2020-12-23 17:19:22,602 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 39 [2020-12-23 17:19:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:22,602 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2020-12-23 17:19:22,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 17:19:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2020-12-23 17:19:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 17:19:22,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:22,603 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:19:22,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 17:19:22,818 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:22,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:22,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1167616910, now seen corresponding path program 1 times [2020-12-23 17:19:22,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:22,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505040362] [2020-12-23 17:19:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:23,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505040362] [2020-12-23 17:19:23,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114276275] [2020-12-23 17:19:23,037 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 [2020-12-23 17:19:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:23,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 17:19:23,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:23,174 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 [2020-12-23 17:19:23,175 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,184 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:23,185 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,185 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-12-23 17:19:23,235 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 [2020-12-23 17:19:23,235 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,248 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:23,252 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 [2020-12-23 17:19:23,252 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,263 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:23,264 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,264 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:30 [2020-12-23 17:19:23,301 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 15 treesize of output 7 [2020-12-23 17:19:23,302 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:23,311 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,314 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:23 [2020-12-23 17:19:23,385 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 19 treesize of output 11 [2020-12-23 17:19:23,386 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,395 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:23,399 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2020-12-23 17:19:23,400 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,407 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:23,408 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,409 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:59, output treesize:24 [2020-12-23 17:19:23,496 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:23,497 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 [2020-12-23 17:19:23,498 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:19:23,510 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:23,511 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,511 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:25 [2020-12-23 17:19:23,625 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 [2020-12-23 17:19:23,626 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:23,633 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,633 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:5 [2020-12-23 17:19:23,754 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 9 [2020-12-23 17:19:23,755 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,757 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:23,758 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:23,758 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:7 [2020-12-23 17:19:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:23,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:23,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 30 [2020-12-23 17:19:23,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612970920] [2020-12-23 17:19:23,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 17:19:23,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:23,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 17:19:23,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2020-12-23 17:19:23,786 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand 31 states. [2020-12-23 17:19:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:25,589 INFO L93 Difference]: Finished difference Result 210 states and 218 transitions. [2020-12-23 17:19:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 17:19:25,589 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 40 [2020-12-23 17:19:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:25,591 INFO L225 Difference]: With dead ends: 210 [2020-12-23 17:19:25,591 INFO L226 Difference]: Without dead ends: 210 [2020-12-23 17:19:25,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=459, Invalid=2511, Unknown=0, NotChecked=0, Total=2970 [2020-12-23 17:19:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-12-23 17:19:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 149. [2020-12-23 17:19:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-23 17:19:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2020-12-23 17:19:25,597 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 40 [2020-12-23 17:19:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:25,598 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2020-12-23 17:19:25,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 17:19:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2020-12-23 17:19:25,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 17:19:25,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:25,599 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:19:25,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 17:19:25,809 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:25,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:25,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1834968935, now seen corresponding path program 1 times [2020-12-23 17:19:25,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:25,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049744591] [2020-12-23 17:19:25,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:26,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049744591] [2020-12-23 17:19:26,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915826673] [2020-12-23 17:19:26,415 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 [2020-12-23 17:19:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:26,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-23 17:19:26,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:26,617 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 [2020-12-23 17:19:26,618 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:26,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:26,632 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:26,633 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:44 [2020-12-23 17:19:26,791 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:26,792 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 80 [2020-12-23 17:19:26,794 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-23 17:19:26,794 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:19:26,796 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:26,815 INFO L625 ElimStorePlain]: treesize reduction 47, result has 44.7 percent of original size [2020-12-23 17:19:26,815 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:26,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:82, output treesize:38 [2020-12-23 17:19:27,516 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:19:27,517 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:19:27,518 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2020-12-23 17:19:27,519 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:27,550 INFO L625 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2020-12-23 17:19:27,552 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:27,553 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:70, output treesize:23 [2020-12-23 17:19:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:27,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:27,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 36 [2020-12-23 17:19:27,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815739214] [2020-12-23 17:19:27,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 17:19:27,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:27,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 17:19:27,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1212, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 17:19:27,896 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 37 states. [2020-12-23 17:19:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:29,848 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2020-12-23 17:19:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 17:19:29,848 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 41 [2020-12-23 17:19:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:29,850 INFO L225 Difference]: With dead ends: 156 [2020-12-23 17:19:29,850 INFO L226 Difference]: Without dead ends: 152 [2020-12-23 17:19:29,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=260, Invalid=2190, Unknown=0, NotChecked=0, Total=2450 [2020-12-23 17:19:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-23 17:19:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 149. [2020-12-23 17:19:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-23 17:19:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2020-12-23 17:19:29,855 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 41 [2020-12-23 17:19:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:29,855 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2020-12-23 17:19:29,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 17:19:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2020-12-23 17:19:29,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 17:19:29,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:29,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:19:30,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:19:30,072 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:30,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1836385990, now seen corresponding path program 1 times [2020-12-23 17:19:30,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:30,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268890291] [2020-12-23 17:19:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:30,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268890291] [2020-12-23 17:19:30,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896858448] [2020-12-23 17:19:30,410 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 [2020-12-23 17:19:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:30,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 17:19:30,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:30,553 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 [2020-12-23 17:19:30,553 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:30,565 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:30,568 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 [2020-12-23 17:19:30,569 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:30,578 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:30,580 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:30,580 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:28 [2020-12-23 17:19:30,637 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 15 treesize of output 7 [2020-12-23 17:19:30,638 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:30,643 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:30,644 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:30,644 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:14 [2020-12-23 17:19:30,730 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 11 treesize of output 7 [2020-12-23 17:19:30,731 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:30,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:30,744 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 [2020-12-23 17:19:30,745 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:30,751 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:30,754 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. [2020-12-23 17:19:30,754 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:18 [2020-12-23 17:19:30,884 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:30,884 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 15 treesize of output 15 [2020-12-23 17:19:30,886 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:19:30,894 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:30,895 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:30,896 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:11 [2020-12-23 17:19:31,009 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:19:31,011 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:31,012 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 17 treesize of output 10 [2020-12-23 17:19:31,013 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:31,019 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:31,021 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:31,021 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2020-12-23 17:19:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:31,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:31,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 34 [2020-12-23 17:19:31,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115015314] [2020-12-23 17:19:31,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 17:19:31,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:31,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 17:19:31,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 17:19:31,117 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 34 states. [2020-12-23 17:19:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:33,800 INFO L93 Difference]: Finished difference Result 186 states and 193 transitions. [2020-12-23 17:19:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-23 17:19:33,801 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 41 [2020-12-23 17:19:33,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:33,802 INFO L225 Difference]: With dead ends: 186 [2020-12-23 17:19:33,802 INFO L226 Difference]: Without dead ends: 162 [2020-12-23 17:19:33,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1067 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=507, Invalid=4185, Unknown=0, NotChecked=0, Total=4692 [2020-12-23 17:19:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-23 17:19:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 125. [2020-12-23 17:19:33,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-23 17:19:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-12-23 17:19:33,808 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 41 [2020-12-23 17:19:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:33,808 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-12-23 17:19:33,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 17:19:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-12-23 17:19:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 17:19:33,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:33,809 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 17:19:34,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 17:19:34,016 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:34,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1454841971, now seen corresponding path program 1 times [2020-12-23 17:19:34,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:34,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100486470] [2020-12-23 17:19:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:34,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100486470] [2020-12-23 17:19:34,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662406438] [2020-12-23 17:19:34,413 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 [2020-12-23 17:19:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:34,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 76 conjunts are in the unsatisfiable core [2020-12-23 17:19:34,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:34,503 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 [2020-12-23 17:19:34,504 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:34,510 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:34,511 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:34,511 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:19:34,625 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:34,625 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:19:34,627 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:34,632 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:34,643 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:34,643 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:34,644 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:27 [2020-12-23 17:19:34,702 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 [2020-12-23 17:19:34,703 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:34,720 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:34,724 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 [2020-12-23 17:19:34,724 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:34,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:34,742 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:34,742 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:53, output treesize:45 [2020-12-23 17:19:34,923 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_32|], 2=[|v_#memory_$Pointer$.offset_30|, |v_#memory_$Pointer$.base_40|]} [2020-12-23 17:19:34,928 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 11 treesize of output 7 [2020-12-23 17:19:34,929 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:34,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:34,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:19:34,964 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 34 treesize of output 16 [2020-12-23 17:19:34,965 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:34,993 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:35,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:19:35,004 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 46 treesize of output 22 [2020-12-23 17:19:35,005 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:35,023 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:35,024 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:35,024 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:101, output treesize:61 [2020-12-23 17:19:35,108 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:35,108 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 32 [2020-12-23 17:19:35,110 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:19:35,111 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:35,112 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:35,131 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:35,132 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:35,134 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:62 [2020-12-23 17:19:35,206 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:19:35,216 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:35,217 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 1 case distinctions, treesize of input 43 treesize of output 48 [2020-12-23 17:19:35,218 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:35,285 INFO L625 ElimStorePlain]: treesize reduction 4, result has 95.5 percent of original size [2020-12-23 17:19:35,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:19:35,290 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2020-12-23 17:19:35,292 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:35,320 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:35,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:19:35,326 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2020-12-23 17:19:35,328 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:35,350 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:35,352 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:35,352 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:104, output treesize:64 [2020-12-23 17:19:35,612 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_34|], 6=[|v_#memory_$Pointer$.base_42|, |v_#memory_$Pointer$.offset_32|]} [2020-12-23 17:19:35,619 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 66 [2020-12-23 17:19:35,620 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:35,696 INFO L625 ElimStorePlain]: treesize reduction 28, result has 92.3 percent of original size [2020-12-23 17:19:35,701 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:19:35,750 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:35,750 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 316 treesize of output 277 [2020-12-23 17:19:35,755 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:19:35,756 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:19:35,758 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:19:35,759 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:19:35,760 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:19:35,764 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:35,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:35,767 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:35,769 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:35,770 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:35,771 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:35,773 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:19:35,778 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-23 17:19:35,778 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:19:35,780 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:19:35,781 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-12-23 17:19:35,781 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:35,783 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:19:35,784 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:35,785 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:35,786 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:19:35,791 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2020-12-23 17:19:35,904 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-12-23 17:19:35,905 INFO L625 ElimStorePlain]: treesize reduction 1200, result has 16.2 percent of original size [2020-12-23 17:19:35,966 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:35,967 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 229 treesize of output 250 [2020-12-23 17:19:35,971 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-12-23 17:19:35,972 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:35,974 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:19:35,978 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2020-12-23 17:19:36,032 INFO L625 ElimStorePlain]: treesize reduction 234, result has 23.0 percent of original size [2020-12-23 17:19:36,033 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:36,034 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:387, output treesize:70 [2020-12-23 17:19:36,375 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:36,376 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2020-12-23 17:19:36,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:36,379 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:36,379 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:19:36,401 INFO L625 ElimStorePlain]: treesize reduction 8, result has 84.3 percent of original size [2020-12-23 17:19:36,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:19:36,406 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 22 treesize of output 10 [2020-12-23 17:19:36,408 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:36,417 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:36,419 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:19:36,419 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:66, output treesize:25 [2020-12-23 17:19:36,614 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:36,615 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 37 [2020-12-23 17:19:36,617 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:36,624 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:36,626 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:36,626 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2020-12-23 17:19:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:36,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:36,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2020-12-23 17:19:36,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654509141] [2020-12-23 17:19:36,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 17:19:36,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:36,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 17:19:36,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 17:19:36,657 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 37 states. [2020-12-23 17:19:37,544 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-12-23 17:19:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:40,119 INFO L93 Difference]: Finished difference Result 257 states and 266 transitions. [2020-12-23 17:19:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 17:19:40,120 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 41 [2020-12-23 17:19:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:40,122 INFO L225 Difference]: With dead ends: 257 [2020-12-23 17:19:40,122 INFO L226 Difference]: Without dead ends: 257 [2020-12-23 17:19:40,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=432, Invalid=3350, Unknown=0, NotChecked=0, Total=3782 [2020-12-23 17:19:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-12-23 17:19:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 125. [2020-12-23 17:19:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-23 17:19:40,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2020-12-23 17:19:40,130 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 41 [2020-12-23 17:19:40,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:40,130 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2020-12-23 17:19:40,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 17:19:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2020-12-23 17:19:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 17:19:40,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:40,131 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-23 17:19:40,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 17:19:40,345 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:40,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:40,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2056180247, now seen corresponding path program 1 times [2020-12-23 17:19:40,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:40,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904678700] [2020-12-23 17:19:40,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:40,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904678700] [2020-12-23 17:19:40,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953048390] [2020-12-23 17:19:40,934 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 [2020-12-23 17:19:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:41,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 71 conjunts are in the unsatisfiable core [2020-12-23 17:19:41,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:41,104 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:41,105 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:19:41,107 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:19:41,108 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:41,109 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:41,109 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:19:41,111 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,140 INFO L625 ElimStorePlain]: treesize reduction 10, result has 73.0 percent of original size [2020-12-23 17:19:41,141 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,141 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:27 [2020-12-23 17:19:41,204 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 [2020-12-23 17:19:41,205 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,226 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:41,233 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 [2020-12-23 17:19:41,234 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,254 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:41,256 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,256 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:53, output treesize:45 [2020-12-23 17:19:41,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:19:41,475 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 40 treesize of output 20 [2020-12-23 17:19:41,476 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,498 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:41,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:19:41,504 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 30 treesize of output 14 [2020-12-23 17:19:41,505 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,522 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:41,523 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,523 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:80, output treesize:50 [2020-12-23 17:19:41,641 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:41,642 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 89 [2020-12-23 17:19:41,644 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:19:41,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:41,647 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:19:41,648 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:19:41,651 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,712 INFO L625 ElimStorePlain]: treesize reduction 10, result has 87.5 percent of original size [2020-12-23 17:19:41,713 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,713 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:70 [2020-12-23 17:19:41,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:19:41,820 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2020-12-23 17:19:41,822 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,857 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:41,864 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:19:41,876 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:41,876 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 1 case distinctions, treesize of input 46 treesize of output 49 [2020-12-23 17:19:41,878 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,942 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.5 percent of original size [2020-12-23 17:19:41,945 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:41,946 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:93, output treesize:78 [2020-12-23 17:19:42,256 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_35|], 6=[|v_#memory_$Pointer$.offset_36|, |v_#memory_$Pointer$.base_46|]} [2020-12-23 17:19:42,263 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 27 [2020-12-23 17:19:42,263 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:42,308 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:42,323 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:42,323 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 144 [2020-12-23 17:19:42,325 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:42,403 INFO L625 ElimStorePlain]: treesize reduction 30, result has 86.2 percent of original size [2020-12-23 17:19:42,408 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:19:42,454 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:42,455 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 162 treesize of output 171 [2020-12-23 17:19:42,460 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-23 17:19:42,461 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:19:42,462 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-12-23 17:19:42,463 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-12-23 17:19:42,464 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:19:42,465 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:42,466 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:19:42,467 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-12-23 17:19:42,468 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:19:42,470 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:19:42,471 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:42,472 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:19:42,473 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:19:42,474 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:42,475 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:19:42,480 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 6 xjuncts. [2020-12-23 17:19:42,599 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-12-23 17:19:42,600 INFO L625 ElimStorePlain]: treesize reduction 734, result has 14.3 percent of original size [2020-12-23 17:19:42,602 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:19:42,602 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:266, output treesize:122 [2020-12-23 17:19:42,841 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 35 treesize of output 7 [2020-12-23 17:19:42,843 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:42,869 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:42,871 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. [2020-12-23 17:19:42,871 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:129, output treesize:95 [2020-12-23 17:19:43,005 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:43,005 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 35 treesize of output 31 [2020-12-23 17:19:43,009 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:43,054 INFO L625 ElimStorePlain]: treesize reduction 16, result has 83.0 percent of original size [2020-12-23 17:19:43,057 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. [2020-12-23 17:19:43,058 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:106, output treesize:78 [2020-12-23 17:19:43,329 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:19:43,331 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:19:43,343 INFO L348 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2020-12-23 17:19:43,344 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 36 [2020-12-23 17:19:43,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:19:43,348 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:19:43,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:43,370 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. [2020-12-23 17:19:43,371 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:84, output treesize:28 [2020-12-23 17:19:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:43,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:19:43,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 39 [2020-12-23 17:19:43,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235805456] [2020-12-23 17:19:43,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-23 17:19:43,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:19:43,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-23 17:19:43,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 17:19:43,549 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand 40 states. [2020-12-23 17:19:58,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:19:58,967 INFO L93 Difference]: Finished difference Result 219 states and 228 transitions. [2020-12-23 17:19:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-23 17:19:58,968 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 43 [2020-12-23 17:19:58,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:19:58,969 INFO L225 Difference]: With dead ends: 219 [2020-12-23 17:19:58,969 INFO L226 Difference]: Without dead ends: 219 [2020-12-23 17:19:58,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=531, Invalid=3501, Unknown=0, NotChecked=0, Total=4032 [2020-12-23 17:19:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-23 17:19:58,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 127. [2020-12-23 17:19:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-23 17:19:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2020-12-23 17:19:58,975 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 43 [2020-12-23 17:19:58,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:19:58,975 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2020-12-23 17:19:58,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-23 17:19:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2020-12-23 17:19:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 17:19:58,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:19:58,976 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-23 17:19:59,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:19:59,189 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:19:59,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:19:59,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2056180246, now seen corresponding path program 1 times [2020-12-23 17:19:59,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:19:59,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044227033] [2020-12-23 17:19:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:19:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:19:59,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044227033] [2020-12-23 17:19:59,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157280757] [2020-12-23 17:19:59,764 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 [2020-12-23 17:19:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:19:59,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 82 conjunts are in the unsatisfiable core [2020-12-23 17:19:59,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:19:59,856 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 [2020-12-23 17:19:59,856 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:19:59,860 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:19:59,861 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:19:59,861 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:20:00,020 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,020 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 [2020-12-23 17:20:00,021 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:20:00,023 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,035 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,035 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,036 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:20 [2020-12-23 17:20:00,053 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 [2020-12-23 17:20:00,053 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,066 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,073 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 [2020-12-23 17:20:00,074 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,087 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,088 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,088 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:29 [2020-12-23 17:20:00,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:20:00,271 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 30 treesize of output 14 [2020-12-23 17:20:00,272 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,286 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,290 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 15 [2020-12-23 17:20:00,292 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,302 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,305 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,305 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:25 [2020-12-23 17:20:00,359 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 [2020-12-23 17:20:00,360 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,374 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,375 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,375 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:41 [2020-12-23 17:20:00,451 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:20:00,477 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,477 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 40 [2020-12-23 17:20:00,479 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,500 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,505 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 28 treesize of output 23 [2020-12-23 17:20:00,506 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,527 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,528 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,528 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:64, output treesize:49 [2020-12-23 17:20:00,765 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_36|], 6=[|v_#memory_$Pointer$.offset_40|, |v_#memory_$Pointer$.base_50|]} [2020-12-23 17:20:00,771 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 53 treesize of output 35 [2020-12-23 17:20:00,772 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,801 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,843 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,844 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 5 new quantified variables, introduced 2 case distinctions, treesize of input 249 treesize of output 232 [2020-12-23 17:20:00,847 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,877 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,878 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 63 [2020-12-23 17:20:00,880 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,893 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:00,894 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:00,894 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:278, output treesize:58 [2020-12-23 17:20:01,490 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:20:01,506 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:01,507 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 50 [2020-12-23 17:20:01,508 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:01,548 INFO L625 ElimStorePlain]: treesize reduction 8, result has 90.2 percent of original size [2020-12-23 17:20:01,549 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:20:01,550 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. [2020-12-23 17:20:01,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:75, output treesize:74 [2020-12-23 17:20:01,551 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:20:04,317 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:20:04,333 INFO L348 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2020-12-23 17:20:04,334 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 51 [2020-12-23 17:20:04,336 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:04,352 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:04,364 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:04,364 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2020-12-23 17:20:04,365 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:04,377 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:04,378 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:04,379 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:94, output treesize:9 [2020-12-23 17:20:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:20:04,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:20:04,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 38 [2020-12-23 17:20:04,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572964452] [2020-12-23 17:20:04,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-23 17:20:04,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:20:04,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-23 17:20:04,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1360, Unknown=2, NotChecked=0, Total=1482 [2020-12-23 17:20:04,397 INFO L87 Difference]: Start difference. First operand 127 states and 139 transitions. Second operand 39 states. [2020-12-23 17:20:05,603 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-12-23 17:20:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:20:08,828 INFO L93 Difference]: Finished difference Result 267 states and 277 transitions. [2020-12-23 17:20:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-23 17:20:08,829 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 43 [2020-12-23 17:20:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:20:08,830 INFO L225 Difference]: With dead ends: 267 [2020-12-23 17:20:08,831 INFO L226 Difference]: Without dead ends: 267 [2020-12-23 17:20:08,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=498, Invalid=4192, Unknown=2, NotChecked=0, Total=4692 [2020-12-23 17:20:08,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-12-23 17:20:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 131. [2020-12-23 17:20:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-23 17:20:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2020-12-23 17:20:08,837 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 43 [2020-12-23 17:20:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:20:08,837 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2020-12-23 17:20:08,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-23 17:20:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2020-12-23 17:20:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 17:20:08,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:20:08,838 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-23 17:20:09,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-23 17:20:09,054 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:20:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:20:09,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1116291750, now seen corresponding path program 1 times [2020-12-23 17:20:09,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:20:09,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137458680] [2020-12-23 17:20:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:20:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:20:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:20:09,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137458680] [2020-12-23 17:20:09,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602286239] [2020-12-23 17:20:09,543 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 [2020-12-23 17:20:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:20:09,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-23 17:20:09,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:20:09,650 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 [2020-12-23 17:20:09,650 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:09,655 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:09,655 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:09,656 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:20:09,848 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:09,848 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:20:09,850 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:20:09,854 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:09,870 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:09,871 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:09,872 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:27 [2020-12-23 17:20:09,947 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 [2020-12-23 17:20:09,948 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:09,969 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:09,971 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:09,971 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:39 [2020-12-23 17:20:10,216 INFO L348 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2020-12-23 17:20:10,216 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 46 treesize of output 32 [2020-12-23 17:20:10,218 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:10,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:10,238 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. [2020-12-23 17:20:10,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:60, output treesize:33 [2020-12-23 17:20:10,345 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:10,345 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 [2020-12-23 17:20:10,347 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:10,404 INFO L625 ElimStorePlain]: treesize reduction 46, result has 53.5 percent of original size [2020-12-23 17:20:10,406 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:10,406 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:54, output treesize:53 [2020-12-23 17:20:10,504 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_41|], 2=[|v_#memory_$Pointer$.base_53|]} [2020-12-23 17:20:10,510 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 [2020-12-23 17:20:10,511 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:10,536 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:10,565 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:10,566 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 44 treesize of output 65 [2020-12-23 17:20:10,572 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:10,592 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:10,594 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. [2020-12-23 17:20:10,594 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:71, output treesize:42 [2020-12-23 17:20:10,683 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 31 treesize of output 7 [2020-12-23 17:20:10,685 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:10,699 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:10,701 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:10,701 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:66, output treesize:39 [2020-12-23 17:20:10,860 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_37|], 2=[|v_#memory_$Pointer$.base_54|]} [2020-12-23 17:20:10,864 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 11 treesize of output 7 [2020-12-23 17:20:10,865 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:10,883 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:10,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:20:10,889 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 37 treesize of output 19 [2020-12-23 17:20:10,890 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:10,904 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:10,905 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. [2020-12-23 17:20:10,906 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:62, output treesize:43 [2020-12-23 17:20:11,097 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:11,097 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 15 treesize of output 15 [2020-12-23 17:20:11,098 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:20:11,117 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:11,119 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:11,120 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:36 [2020-12-23 17:20:11,363 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:20:11,364 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2020-12-23 17:20:11,365 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:11,373 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:11,376 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:11,376 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:15 [2020-12-23 17:20:11,483 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 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-23 17:20:11,484 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:11,493 INFO L625 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2020-12-23 17:20:11,494 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:11,495 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:11 [2020-12-23 17:20:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:20:11,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:20:11,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2020-12-23 17:20:11,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122980203] [2020-12-23 17:20:11,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-23 17:20:11,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:20:11,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-23 17:20:11,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1382, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 17:20:11,567 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand 40 states. [2020-12-23 17:20:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:20:15,069 INFO L93 Difference]: Finished difference Result 246 states and 259 transitions. [2020-12-23 17:20:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-23 17:20:15,070 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 46 [2020-12-23 17:20:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:20:15,071 INFO L225 Difference]: With dead ends: 246 [2020-12-23 17:20:15,071 INFO L226 Difference]: Without dead ends: 246 [2020-12-23 17:20:15,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=653, Invalid=4317, Unknown=0, NotChecked=0, Total=4970 [2020-12-23 17:20:15,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-12-23 17:20:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 155. [2020-12-23 17:20:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-23 17:20:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 181 transitions. [2020-12-23 17:20:15,077 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 181 transitions. Word has length 46 [2020-12-23 17:20:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:20:15,078 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 181 transitions. [2020-12-23 17:20:15,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-23 17:20:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 181 transitions. [2020-12-23 17:20:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 17:20:15,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:20:15,079 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-23 17:20:15,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:20:15,294 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:20:15,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:20:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1116291749, now seen corresponding path program 1 times [2020-12-23 17:20:15,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:20:15,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491728674] [2020-12-23 17:20:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:20:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:20:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:20:15,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491728674] [2020-12-23 17:20:15,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705530860] [2020-12-23 17:20:15,711 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 [2020-12-23 17:20:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:20:15,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 64 conjunts are in the unsatisfiable core [2020-12-23 17:20:15,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:20:15,796 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 [2020-12-23 17:20:15,797 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:15,801 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:15,801 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:15,801 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:20:15,956 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:15,957 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 [2020-12-23 17:20:15,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:20:15,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:15,969 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:15,970 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:15,970 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:20 [2020-12-23 17:20:16,019 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 [2020-12-23 17:20:16,019 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:16,034 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:16,038 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 [2020-12-23 17:20:16,039 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:16,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:16,053 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:16,053 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:32 [2020-12-23 17:20:16,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:20:16,259 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 [2020-12-23 17:20:16,260 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:16,279 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:16,305 INFO L348 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2020-12-23 17:20:16,306 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 27 [2020-12-23 17:20:16,307 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:16,324 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:16,325 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. [2020-12-23 17:20:16,325 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:71, output treesize:35 [2020-12-23 17:20:16,489 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 [2020-12-23 17:20:16,490 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:16,513 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:16,518 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 [2020-12-23 17:20:16,519 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:16,547 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:16,549 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. [2020-12-23 17:20:16,550 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:68, output treesize:51 [2020-12-23 17:20:16,832 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_38|], 2=[|v_#memory_$Pointer$.base_58|], 6=[|v_#memory_$Pointer$.offset_45|]} [2020-12-23 17:20:16,838 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 23 treesize of output 19 [2020-12-23 17:20:16,839 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:16,873 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:16,895 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:16,895 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 136 [2020-12-23 17:20:16,897 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:20:16,898 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:20:16,900 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:20:16,901 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:20:16,902 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:16,974 INFO L625 ElimStorePlain]: treesize reduction 52, result has 63.6 percent of original size [2020-12-23 17:20:17,015 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:17,016 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 114 [2020-12-23 17:20:17,018 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:17,084 INFO L625 ElimStorePlain]: treesize reduction 68, result has 46.0 percent of original size [2020-12-23 17:20:17,089 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:17,089 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:161, output treesize:67 [2020-12-23 17:20:17,318 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:17,318 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 15 treesize of output 15 [2020-12-23 17:20:17,319 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 17:20:17,344 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:17,347 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. [2020-12-23 17:20:17,347 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:74, output treesize:60 [2020-12-23 17:20:17,612 INFO L443 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|], 6=[|#memory_$Pointer$.offset|]} [2020-12-23 17:20:17,616 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:20:17,617 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 24 [2020-12-23 17:20:17,618 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:17,638 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:17,642 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:20:17,643 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 26 treesize of output 10 [2020-12-23 17:20:17,645 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:17,655 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:17,657 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:17,658 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:71, output treesize:9 [2020-12-23 17:20:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:20:17,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:20:17,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2020-12-23 17:20:17,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968878169] [2020-12-23 17:20:17,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 17:20:17,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:20:17,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 17:20:17,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 17:20:17,796 INFO L87 Difference]: Start difference. First operand 155 states and 181 transitions. Second operand 38 states. [2020-12-23 17:20:19,093 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-12-23 17:20:19,333 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2020-12-23 17:20:22,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:20:22,943 INFO L93 Difference]: Finished difference Result 275 states and 284 transitions. [2020-12-23 17:20:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-23 17:20:22,944 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 46 [2020-12-23 17:20:22,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:20:22,945 INFO L225 Difference]: With dead ends: 275 [2020-12-23 17:20:22,945 INFO L226 Difference]: Without dead ends: 275 [2020-12-23 17:20:22,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=615, Invalid=4935, Unknown=0, NotChecked=0, Total=5550 [2020-12-23 17:20:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-23 17:20:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 158. [2020-12-23 17:20:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-23 17:20:22,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2020-12-23 17:20:22,951 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 46 [2020-12-23 17:20:22,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:20:22,952 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2020-12-23 17:20:22,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 17:20:22,952 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2020-12-23 17:20:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 17:20:22,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:20:22,953 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:20:23,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-23 17:20:23,165 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:20:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:20:23,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2104783982, now seen corresponding path program 2 times [2020-12-23 17:20:23,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:20:23,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086283590] [2020-12-23 17:20:23,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:20:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:20:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:20:23,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086283590] [2020-12-23 17:20:23,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004362214] [2020-12-23 17:20:23,763 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 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 [2020-12-23 17:20:23,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:20:23,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:20:23,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-23 17:20:23,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:20:23,850 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 [2020-12-23 17:20:23,851 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:23,855 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:23,855 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:23,855 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:20:24,007 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:24,008 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:20:24,009 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:20:24,010 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,023 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:24,035 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,036 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:24 [2020-12-23 17:20:24,097 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 [2020-12-23 17:20:24,098 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,129 INFO L625 ElimStorePlain]: treesize reduction 5, result has 86.8 percent of original size [2020-12-23 17:20:24,130 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,130 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:36 [2020-12-23 17:20:24,345 INFO L348 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2020-12-23 17:20:24,345 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 46 treesize of output 32 [2020-12-23 17:20:24,347 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:24,358 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:27 [2020-12-23 17:20:24,452 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:24,452 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 99 [2020-12-23 17:20:24,454 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:20:24,454 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:20:24,456 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,475 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:24,476 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,476 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:58 [2020-12-23 17:20:24,583 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:24,584 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 1 case distinctions, treesize of input 54 treesize of output 69 [2020-12-23 17:20:24,586 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:24,607 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,607 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:58 [2020-12-23 17:20:24,940 INFO L348 Elim1Store]: treesize reduction 48, result has 53.4 percent of original size [2020-12-23 17:20:24,941 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 83 [2020-12-23 17:20:24,943 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:20:24,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:24,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:24,946 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:24,962 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:24,963 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. [2020-12-23 17:20:24,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:115, output treesize:64 [2020-12-23 17:20:25,099 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:25,100 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 189 [2020-12-23 17:20:25,102 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:20:25,103 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:20:25,104 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:20:25,107 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:20:25,133 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:25,135 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:25,135 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:111, output treesize:135 [2020-12-23 17:20:25,302 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:25,302 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 148 [2020-12-23 17:20:25,305 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:20:25,306 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:20:25,306 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:20:25,307 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:20:25,308 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:20:25,310 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:20:25,343 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:25,345 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:25,345 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:148, output treesize:111 [2020-12-23 17:20:25,799 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:25,799 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 253 treesize of output 237 [2020-12-23 17:20:25,804 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:20:25,805 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:20:25,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:20:25,806 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:20:25,807 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:20:25,808 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:20:25,810 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:20:25,811 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:20:25,811 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:20:25,812 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:20:25,812 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:25,813 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:25,814 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:20:25,815 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:20:25,816 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:20:25,817 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:25,818 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:25,819 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:20:25,819 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:20:25,820 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:20:25,821 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:25,822 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:25,822 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:20:25,823 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:25,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:25,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:20:25,825 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-12-23 17:20:25,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:20:25,827 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:20:25,828 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:20:25,828 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:20:25,829 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:20:25,829 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:20:25,831 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 14 disjuncts [2020-12-23 17:20:25,831 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-23 17:20:25,832 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 13 disjuncts [2020-12-23 17:20:25,832 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 17:20:25,833 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 17:20:25,833 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 17:20:25,834 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 17:20:25,835 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 17:20:25,835 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 17:20:25,836 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 17:20:25,837 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 7, 12, 3, 12, 3, 1] term [2020-12-23 17:20:25,837 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 4 disjuncts [2020-12-23 17:20:25,837 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 12, 3, 1] term [2020-12-23 17:20:25,838 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 17:20:25,839 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 12, 3, 1] term [2020-12-23 17:20:25,839 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:20:25,845 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 7 xjuncts. [2020-12-23 17:20:26,001 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-12-23 17:20:26,002 INFO L625 ElimStorePlain]: treesize reduction 2012, result has 8.7 percent of original size [2020-12-23 17:20:26,005 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. [2020-12-23 17:20:26,005 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:261, output treesize:192 [2020-12-23 17:20:26,390 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:20:26,424 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:26,425 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 193 treesize of output 97 [2020-12-23 17:20:26,429 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:20:26,429 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:26,430 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:20:26,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:26,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:20:26,436 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:20:26,436 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:20:26,441 INFO L547 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:26,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:20:26,468 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 17:20:26,468 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:207, output treesize:45 [2020-12-23 17:20:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:20:26,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:20:26,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 42 [2020-12-23 17:20:26,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432410918] [2020-12-23 17:20:26,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-23 17:20:26,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:20:26,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-23 17:20:26,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 17:20:26,689 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand 43 states. [2020-12-23 17:20:28,058 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-12-23 17:20:29,867 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-12-23 17:20:32,575 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-12-23 17:20:34,794 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2020-12-23 17:20:54,347 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 17:21:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:21:02,739 INFO L93 Difference]: Finished difference Result 324 states and 350 transitions. [2020-12-23 17:21:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-12-23 17:21:02,740 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 46 [2020-12-23 17:21:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:21:02,741 INFO L225 Difference]: With dead ends: 324 [2020-12-23 17:21:02,741 INFO L226 Difference]: Without dead ends: 324 [2020-12-23 17:21:02,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3831 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=1634, Invalid=11017, Unknown=5, NotChecked=0, Total=12656 [2020-12-23 17:21:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-12-23 17:21:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 160. [2020-12-23 17:21:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-23 17:21:02,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 186 transitions. [2020-12-23 17:21:02,749 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 186 transitions. Word has length 46 [2020-12-23 17:21:02,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:21:02,749 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 186 transitions. [2020-12-23 17:21:02,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-23 17:21:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 186 transitions. [2020-12-23 17:21:02,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 17:21:02,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:21:02,750 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:21:02,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-23 17:21:02,965 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:21:02,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:21:02,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2104783981, now seen corresponding path program 2 times [2020-12-23 17:21:02,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:21:02,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711192788] [2020-12-23 17:21:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:21:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:21:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:21:03,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711192788] [2020-12-23 17:21:03,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99333585] [2020-12-23 17:21:03,973 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 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 [2020-12-23 17:21:04,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:21:04,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:21:04,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 76 conjunts are in the unsatisfiable core [2020-12-23 17:21:04,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:21:04,090 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 [2020-12-23 17:21:04,091 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,095 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:04,096 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,097 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:21:04,272 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_34|], 3=[|v_#valid_71|]} [2020-12-23 17:21:04,277 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 [2020-12-23 17:21:04,278 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,297 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:04,323 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:04,323 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:21:04,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:04,328 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:04,348 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,348 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:32 [2020-12-23 17:21:04,437 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2020-12-23 17:21:04,438 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,463 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:04,468 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 [2020-12-23 17:21:04,469 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,492 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:04,494 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,494 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:55, output treesize:56 [2020-12-23 17:21:04,792 INFO L348 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2020-12-23 17:21:04,793 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 57 treesize of output 37 [2020-12-23 17:21:04,794 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:04,826 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 [2020-12-23 17:21:04,828 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,850 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:04,851 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,851 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:92, output treesize:44 [2020-12-23 17:21:04,945 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_35|], 3=[|v_#valid_72|]} [2020-12-23 17:21:04,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:04,953 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2020-12-23 17:21:04,954 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:04,983 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:05,004 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:05,005 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 26 [2020-12-23 17:21:05,007 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:05,007 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:05,009 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:05,034 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:05,035 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:05,035 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:55, output treesize:47 [2020-12-23 17:21:05,142 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2020-12-23 17:21:05,143 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:05,182 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:05,190 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2020-12-23 17:21:05,192 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:05,265 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.4 percent of original size [2020-12-23 17:21:05,267 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:05,268 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:80, output treesize:68 [2020-12-23 17:21:05,668 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_49|], 6=[|v_#memory_$Pointer$.base_68|]} [2020-12-23 17:21:05,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:05,677 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 [2020-12-23 17:21:05,678 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:05,717 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:05,820 INFO L348 Elim1Store]: treesize reduction 48, result has 53.4 percent of original size [2020-12-23 17:21:05,821 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 86 [2020-12-23 17:21:05,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:21:05,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:21:05,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:21:05,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:21:05,829 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:05,884 INFO L625 ElimStorePlain]: treesize reduction 15, result has 83.1 percent of original size [2020-12-23 17:21:05,886 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. [2020-12-23 17:21:05,886 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:140, output treesize:74 [2020-12-23 17:21:06,061 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:06,061 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 48 treesize of output 127 [2020-12-23 17:21:06,064 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:06,163 INFO L625 ElimStorePlain]: treesize reduction 82, result has 56.8 percent of original size [2020-12-23 17:21:06,165 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:06,165 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:119, output treesize:108 [2020-12-23 17:21:06,332 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_50|], 6=[|v_#memory_$Pointer$.base_69|]} [2020-12-23 17:21:06,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:06,339 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 [2020-12-23 17:21:06,341 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:06,376 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:06,386 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:21:06,449 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:06,449 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 128 [2020-12-23 17:21:06,452 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:21:06,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:21:06,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:21:06,454 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:21:06,455 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:21:06,456 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:21:06,457 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:21:06,459 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:06,531 INFO L625 ElimStorePlain]: treesize reduction 10, result has 89.1 percent of original size [2020-12-23 17:21:06,534 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. [2020-12-23 17:21:06,535 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:126, output treesize:73 [2020-12-23 17:21:06,968 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_39|], 6=[|v_#memory_$Pointer$.offset_51|, |v_#memory_$Pointer$.base_70|]} [2020-12-23 17:21:06,976 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 29 treesize of output 25 [2020-12-23 17:21:06,977 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:07,029 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:07,094 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:07,094 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 158 treesize of output 177 [2020-12-23 17:21:07,097 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:07,220 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-12-23 17:21:07,221 INFO L625 ElimStorePlain]: treesize reduction 82, result has 64.7 percent of original size [2020-12-23 17:21:07,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:07,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:07,232 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:21:07,239 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:07,239 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 67 [2020-12-23 17:21:07,242 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:07,335 INFO L625 ElimStorePlain]: treesize reduction 10, result has 93.1 percent of original size [2020-12-23 17:21:07,340 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:07,341 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:21:07,344 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:07,345 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:21:07,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:21:07,348 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:07,348 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:237, output treesize:129 [2020-12-23 17:21:07,350 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:07,351 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:21:07,353 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:07,354 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:21:07,355 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:21:07,544 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:07,546 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:21:07,548 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:21:08,379 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:08,404 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 27 treesize of output 7 [2020-12-23 17:21:08,407 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:08,420 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:08,420 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 15 treesize of output 15 [2020-12-23 17:21:08,422 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-23 17:21:08,498 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:08,503 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-12-23 17:21:08,503 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:232, output treesize:192 [2020-12-23 17:21:08,719 INFO L443 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.offset|], 2=[|#memory_$Pointer$.base|]} [2020-12-23 17:21:08,723 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 15 treesize of output 7 [2020-12-23 17:21:08,725 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:08,743 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:08,762 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:21:08,766 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:08,766 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 33 [2020-12-23 17:21:08,769 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:08,784 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:08,786 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. [2020-12-23 17:21:08,786 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:84, output treesize:18 [2020-12-23 17:21:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:21:08,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:21:08,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 43 [2020-12-23 17:21:08,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143174013] [2020-12-23 17:21:08,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-23 17:21:08,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:21:09,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-23 17:21:09,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1720, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 17:21:09,000 INFO L87 Difference]: Start difference. First operand 160 states and 186 transitions. Second operand 44 states. [2020-12-23 17:21:09,612 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-12-23 17:21:10,321 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2020-12-23 17:21:10,571 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2020-12-23 17:21:10,924 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-12-23 17:21:11,154 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2020-12-23 17:21:12,152 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2020-12-23 17:21:14,029 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2020-12-23 17:21:15,250 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2020-12-23 17:21:17,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:21:17,765 INFO L93 Difference]: Finished difference Result 340 states and 366 transitions. [2020-12-23 17:21:17,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-12-23 17:21:17,766 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 46 [2020-12-23 17:21:17,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:21:17,768 INFO L225 Difference]: With dead ends: 340 [2020-12-23 17:21:17,768 INFO L226 Difference]: Without dead ends: 340 [2020-12-23 17:21:17,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3069 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1229, Invalid=8671, Unknown=0, NotChecked=0, Total=9900 [2020-12-23 17:21:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-12-23 17:21:17,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 165. [2020-12-23 17:21:17,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-12-23 17:21:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 192 transitions. [2020-12-23 17:21:17,775 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 192 transitions. Word has length 46 [2020-12-23 17:21:17,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:21:17,776 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 192 transitions. [2020-12-23 17:21:17,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-23 17:21:17,776 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 192 transitions. [2020-12-23 17:21:17,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 17:21:17,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:21:17,777 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:21:17,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:21:17,991 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:21:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:21:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash -906319157, now seen corresponding path program 1 times [2020-12-23 17:21:17,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:21:17,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281235411] [2020-12-23 17:21:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:21:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:21:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 17:21:18,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281235411] [2020-12-23 17:21:18,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828225845] [2020-12-23 17:21:18,350 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 [2020-12-23 17:21:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:21:18,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-23 17:21:18,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:21:18,442 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 [2020-12-23 17:21:18,443 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,447 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:18,448 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,448 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:21:18,516 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 11 treesize of output 7 [2020-12-23 17:21:18,517 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,539 INFO L625 ElimStorePlain]: treesize reduction 8, result has 73.3 percent of original size [2020-12-23 17:21:18,540 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,540 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:22 [2020-12-23 17:21:18,602 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:18,602 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:21:18,603 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:18,605 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,622 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:18,623 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,624 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:31 [2020-12-23 17:21:18,678 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_71|], 2=[|v_#memory_int_41|]} [2020-12-23 17:21:18,683 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 [2020-12-23 17:21:18,683 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,730 INFO L625 ElimStorePlain]: treesize reduction 5, result has 92.2 percent of original size [2020-12-23 17:21:18,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:18,738 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 11 [2020-12-23 17:21:18,739 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,757 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:18,758 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,758 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:68, output treesize:43 [2020-12-23 17:21:18,810 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 31 treesize of output 13 [2020-12-23 17:21:18,811 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,822 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:18,823 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,823 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:25 [2020-12-23 17:21:18,911 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 19 treesize of output 18 [2020-12-23 17:21:18,913 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,926 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:18,933 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:18,933 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2020-12-23 17:21:19,020 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,020 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-12-23 17:21:19,022 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:19,023 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:19,024 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,044 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,044 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:45 [2020-12-23 17:21:19,104 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_72|], 6=[|v_#memory_int_43|]} [2020-12-23 17:21:19,110 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2020-12-23 17:21:19,111 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,138 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:19,142 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-12-23 17:21:19,144 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,165 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,167 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,167 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:77, output treesize:63 [2020-12-23 17:21:19,238 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 41 treesize of output 17 [2020-12-23 17:21:19,239 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,257 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,259 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. [2020-12-23 17:21:19,260 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:72, output treesize:45 [2020-12-23 17:21:19,411 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-12-23 17:21:19,412 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,430 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,432 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. [2020-12-23 17:21:19,433 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:56, output treesize:52 [2020-12-23 17:21:19,527 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,527 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37 [2020-12-23 17:21:19,529 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:21:19,529 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:19,530 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:19,532 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,551 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,552 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:19,553 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:49 [2020-12-23 17:21:19,642 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_73|], 12=[|v_#memory_int_45|]} [2020-12-23 17:21:19,647 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 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 [2020-12-23 17:21:19,648 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,678 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:19,683 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2020-12-23 17:21:19,684 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,712 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:19,712 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:81, output treesize:67 [2020-12-23 17:21:19,799 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2020-12-23 17:21:19,801 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:19,824 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:19,827 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:19,828 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:76, output treesize:49 [2020-12-23 17:21:20,007 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2020-12-23 17:21:20,009 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:20,032 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:20,036 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:20,036 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:60, output treesize:56 [2020-12-23 17:21:20,257 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2020-12-23 17:21:20,260 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:20,272 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:20,274 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:20,274 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:60, output treesize:3 [2020-12-23 17:21:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:21:20,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:21:20,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 40 [2020-12-23 17:21:20,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892828151] [2020-12-23 17:21:20,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-23 17:21:20,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:21:20,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-23 17:21:20,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1361, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 17:21:20,340 INFO L87 Difference]: Start difference. First operand 165 states and 192 transitions. Second operand 40 states. [2020-12-23 17:21:34,323 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 17:21:34,515 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-12-23 17:21:42,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:21:42,163 INFO L93 Difference]: Finished difference Result 296 states and 323 transitions. [2020-12-23 17:21:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-12-23 17:21:42,164 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 47 [2020-12-23 17:21:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:21:42,166 INFO L225 Difference]: With dead ends: 296 [2020-12-23 17:21:42,166 INFO L226 Difference]: Without dead ends: 296 [2020-12-23 17:21:42,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2426 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1039, Invalid=6616, Unknown=1, NotChecked=0, Total=7656 [2020-12-23 17:21:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-23 17:21:42,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 156. [2020-12-23 17:21:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-23 17:21:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 182 transitions. [2020-12-23 17:21:42,173 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 182 transitions. Word has length 47 [2020-12-23 17:21:42,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:21:42,173 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 182 transitions. [2020-12-23 17:21:42,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-23 17:21:42,174 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 182 transitions. [2020-12-23 17:21:42,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 17:21:42,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:21:42,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-23 17:21:42,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-23 17:21:42,389 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:21:42,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:21:42,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1828266029, now seen corresponding path program 1 times [2020-12-23 17:21:42,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:21:42,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358711611] [2020-12-23 17:21:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:21:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:21:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:21:43,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358711611] [2020-12-23 17:21:43,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45359494] [2020-12-23 17:21:43,095 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 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 [2020-12-23 17:21:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:21:43,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-23 17:21:43,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:21:43,182 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 [2020-12-23 17:21:43,183 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,187 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:43,187 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,187 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:21:43,379 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:43,380 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 [2020-12-23 17:21:43,381 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:43,382 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:43,397 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,397 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:20 [2020-12-23 17:21:43,417 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 [2020-12-23 17:21:43,418 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,434 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:43,439 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 [2020-12-23 17:21:43,439 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,456 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:43,457 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,457 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:29 [2020-12-23 17:21:43,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:43,659 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 15 [2020-12-23 17:21:43,660 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,675 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:43,679 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 30 treesize of output 14 [2020-12-23 17:21:43,680 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,691 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:43,692 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,692 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:25 [2020-12-23 17:21:43,823 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:21:43,836 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:43,837 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 40 [2020-12-23 17:21:43,839 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,857 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:43,861 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 28 treesize of output 23 [2020-12-23 17:21:43,862 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:43,882 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:43,882 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:59, output treesize:34 [2020-12-23 17:21:44,110 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_47|], 5=[|v_#memory_$Pointer$.base_77|, |v_#memory_$Pointer$.offset_55|]} [2020-12-23 17:21:44,115 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 35 treesize of output 23 [2020-12-23 17:21:44,116 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:44,140 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:44,201 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:44,201 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 153 treesize of output 160 [2020-12-23 17:21:44,205 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2020-12-23 17:21:44,205 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:21:44,206 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:44,207 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:21:44,207 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:21:44,207 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:21:44,208 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:21:44,209 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:21:44,210 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:21:44,210 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:21:44,211 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-23 17:21:44,212 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:21:44,215 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:44,232 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:44,286 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:44,287 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 186 [2020-12-23 17:21:44,289 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:44,300 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:44,301 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:44,302 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:175, output treesize:45 [2020-12-23 17:21:45,218 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:21:45,236 INFO L348 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2020-12-23 17:21:45,236 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 56 [2020-12-23 17:21:45,238 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:21:45,240 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:21:45,241 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:45,272 INFO L625 ElimStorePlain]: treesize reduction 8, result has 86.9 percent of original size [2020-12-23 17:21:45,302 INFO L348 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2020-12-23 17:21:45,302 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 38 [2020-12-23 17:21:45,304 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:45,313 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:45,314 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:45,315 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:90, output treesize:25 [2020-12-23 17:21:45,543 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:45,544 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 37 [2020-12-23 17:21:45,546 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:45,554 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:45,556 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:45,556 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2020-12-23 17:21:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:21:45,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:21:45,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 43 [2020-12-23 17:21:45,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970608210] [2020-12-23 17:21:45,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-23 17:21:45,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:21:45,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-23 17:21:45,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 17:21:45,576 INFO L87 Difference]: Start difference. First operand 156 states and 182 transitions. Second operand 43 states. [2020-12-23 17:21:46,962 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-12-23 17:21:51,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:21:51,179 INFO L93 Difference]: Finished difference Result 200 states and 208 transitions. [2020-12-23 17:21:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 17:21:51,180 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 48 [2020-12-23 17:21:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:21:51,182 INFO L225 Difference]: With dead ends: 200 [2020-12-23 17:21:51,182 INFO L226 Difference]: Without dead ends: 200 [2020-12-23 17:21:51,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=473, Invalid=4783, Unknown=0, NotChecked=0, Total=5256 [2020-12-23 17:21:51,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-23 17:21:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 138. [2020-12-23 17:21:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-23 17:21:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2020-12-23 17:21:51,186 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 48 [2020-12-23 17:21:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:21:51,186 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2020-12-23 17:21:51,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-23 17:21:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2020-12-23 17:21:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 17:21:51,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:21:51,187 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2020-12-23 17:21:51,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:21:51,399 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:21:51,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:21:51,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1991879104, now seen corresponding path program 2 times [2020-12-23 17:21:51,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:21:51,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274340652] [2020-12-23 17:21:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:21:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:21:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:21:52,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274340652] [2020-12-23 17:21:52,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146360066] [2020-12-23 17:21:52,407 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 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 [2020-12-23 17:21:52,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:21:52,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:21:52,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 91 conjunts are in the unsatisfiable core [2020-12-23 17:21:52,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:21:52,501 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 [2020-12-23 17:21:52,501 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:52,506 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:52,507 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:52,507 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:21:52,741 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:52,741 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:21:52,743 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:52,745 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:52,763 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:52,764 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:52,765 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:30 [2020-12-23 17:21:52,861 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 [2020-12-23 17:21:52,862 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:52,909 INFO L625 ElimStorePlain]: treesize reduction 5, result has 90.7 percent of original size [2020-12-23 17:21:52,915 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 [2020-12-23 17:21:52,916 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:52,939 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:52,940 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:52,941 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:58, output treesize:48 [2020-12-23 17:21:53,247 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_48|], 2=[|v_#memory_$Pointer$.offset_57|, |v_#memory_$Pointer$.base_79|]} [2020-12-23 17:21:53,257 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 11 treesize of output 7 [2020-12-23 17:21:53,258 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:53,334 INFO L625 ElimStorePlain]: treesize reduction 3, result has 97.1 percent of original size [2020-12-23 17:21:53,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:53,341 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 34 treesize of output 16 [2020-12-23 17:21:53,343 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:53,375 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:53,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:53,384 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 46 treesize of output 22 [2020-12-23 17:21:53,385 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:53,413 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:53,414 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:53,414 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:107, output treesize:70 [2020-12-23 17:21:53,550 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:53,551 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 32 [2020-12-23 17:21:53,552 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:53,553 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:53,555 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:53,579 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:53,580 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:53,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:75, output treesize:68 [2020-12-23 17:21:53,646 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_49|], 3=[|v_#memory_$Pointer$.offset_58|, |v_#memory_$Pointer$.base_80|]} [2020-12-23 17:21:53,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:53,653 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2020-12-23 17:21:53,654 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:53,681 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:53,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:53,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:53,690 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2020-12-23 17:21:53,692 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:53,715 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:53,719 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:21:53,724 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:21:53,739 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:53,739 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 49 [2020-12-23 17:21:53,740 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-23 17:21:53,741 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:53,743 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:53,795 INFO L625 ElimStorePlain]: treesize reduction 25, result has 68.4 percent of original size [2020-12-23 17:21:53,797 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:53,797 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:101, output treesize:48 [2020-12-23 17:21:54,056 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_59|, |v_#memory_int_50|], 5=[|v_#memory_$Pointer$.base_81|]} [2020-12-23 17:21:54,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:54,063 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 [2020-12-23 17:21:54,064 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:54,085 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:54,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:54,093 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 [2020-12-23 17:21:54,094 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:54,115 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:54,187 INFO L348 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2020-12-23 17:21:54,187 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 60 [2020-12-23 17:21:54,189 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:21:54,190 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:21:54,191 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:54,222 INFO L625 ElimStorePlain]: treesize reduction 8, result has 86.7 percent of original size [2020-12-23 17:21:54,224 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:54,225 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:102, output treesize:52 [2020-12-23 17:21:54,418 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_60|], 5=[|v_#memory_$Pointer$.base_82|], 6=[|v_#memory_int_51|]} [2020-12-23 17:21:54,423 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2020-12-23 17:21:54,424 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:54,458 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:54,494 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:54,495 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 77 [2020-12-23 17:21:54,497 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:54,558 INFO L625 ElimStorePlain]: treesize reduction 8, result has 91.8 percent of original size [2020-12-23 17:21:54,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:54,565 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2020-12-23 17:21:54,566 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:54,589 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:54,590 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:54,591 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:97, output treesize:61 [2020-12-23 17:21:54,979 INFO L443 ElimStorePlain]: Different costs {6=[|v_#memory_int_52|, |v_#memory_$Pointer$.offset_61|], 11=[|v_#memory_$Pointer$.base_83|]} [2020-12-23 17:21:55,035 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:55,035 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 2 case distinctions, treesize of input 80 treesize of output 228 [2020-12-23 17:21:55,038 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:55,174 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-12-23 17:21:55,175 INFO L625 ElimStorePlain]: treesize reduction 94, result has 79.0 percent of original size [2020-12-23 17:21:55,229 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:55,230 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 289 treesize of output 366 [2020-12-23 17:21:55,234 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:55,342 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-23 17:21:55,343 INFO L625 ElimStorePlain]: treesize reduction 68, result has 78.2 percent of original size [2020-12-23 17:21:55,394 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:55,395 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 234 treesize of output 174 [2020-12-23 17:21:55,400 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-23 17:21:55,400 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:21:55,403 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:55,536 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-12-23 17:21:55,537 INFO L625 ElimStorePlain]: treesize reduction 137, result has 59.8 percent of original size [2020-12-23 17:21:55,539 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:21:55,539 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:55,540 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:21:55,541 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:55,541 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:305, output treesize:199 [2020-12-23 17:21:55,542 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:21:55,543 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:55,543 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:21:55,712 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:21:55,713 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:21:56,115 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-12-23 17:21:56,901 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-23 17:21:57,329 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-12-23 17:21:57,336 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 17:21:57,339 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 17:21:57,341 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 4, 7, 1] term [2020-12-23 17:21:57,342 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-23 17:21:57,351 INFO L443 ElimStorePlain]: Different costs {0=[v_prenex_16], 1=[v_prenex_15, v_prenex_19], 2=[v_prenex_22, |#memory_$Pointer$.offset|], 3=[v_prenex_18], 5=[|#memory_$Pointer$.base|, v_prenex_21]} [2020-12-23 17:21:57,360 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 15 treesize of output 7 [2020-12-23 17:21:57,361 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:57,471 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-12-23 17:21:57,472 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:57,486 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:57,487 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 36 [2020-12-23 17:21:57,488 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:57,490 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:57,490 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:57,710 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2020-12-23 17:21:57,711 INFO L625 ElimStorePlain]: treesize reduction 8, result has 97.9 percent of original size [2020-12-23 17:21:57,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:21:57,720 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 30 treesize of output 10 [2020-12-23 17:21:57,722 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:57,815 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:57,824 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 10 [2020-12-23 17:21:57,826 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:57,920 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:57,928 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 10 [2020-12-23 17:21:57,929 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:58,008 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:58,030 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:58,030 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2020-12-23 17:21:58,032 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:58,033 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:58,034 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:21:58,035 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:58,035 INFO L547 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:58,190 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-12-23 17:21:58,191 INFO L625 ElimStorePlain]: treesize reduction 16, result has 94.1 percent of original size [2020-12-23 17:21:58,221 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:58,222 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 71 [2020-12-23 17:21:58,225 INFO L547 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:58,371 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-12-23 17:21:58,371 INFO L625 ElimStorePlain]: treesize reduction 4, result has 97.9 percent of original size [2020-12-23 17:21:58,401 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:58,402 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 75 [2020-12-23 17:21:58,405 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 17:21:58,405 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 17:21:58,406 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-23 17:21:58,407 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 17:21:58,408 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:21:58,408 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-23 17:21:58,409 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 17:21:58,410 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 17:21:58,410 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-23 17:21:58,413 INFO L547 ElimStorePlain]: Start of recursive call 9: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:21:58,539 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-23 17:21:58,540 INFO L625 ElimStorePlain]: treesize reduction 4, result has 97.0 percent of original size [2020-12-23 17:21:58,544 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 8 dim-2 vars, End of recursive call: 11 dim-0 vars, and 4 xjuncts. [2020-12-23 17:21:58,544 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 14 variables, input treesize:420, output treesize:131 [2020-12-23 17:21:59,090 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-12-23 17:21:59,102 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:21:59,297 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:59,298 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 37 [2020-12-23 17:21:59,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:21:59,307 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:21:59,309 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:21:59,309 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2020-12-23 17:21:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:21:59,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:21:59,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 50 [2020-12-23 17:21:59,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869552682] [2020-12-23 17:21:59,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-12-23 17:21:59,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:21:59,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-12-23 17:21:59,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2273, Unknown=0, NotChecked=0, Total=2450 [2020-12-23 17:21:59,345 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand 50 states. [2020-12-23 17:22:00,816 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2020-12-23 17:22:09,161 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2020-12-23 17:22:11,936 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-12-23 17:22:12,367 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 71 [2020-12-23 17:22:15,019 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 79 [2020-12-23 17:22:15,489 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 72 [2020-12-23 17:22:15,877 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 70 [2020-12-23 17:22:16,344 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 70 [2020-12-23 17:22:16,879 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 69 [2020-12-23 17:22:17,320 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 75 [2020-12-23 17:22:17,728 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-12-23 17:22:18,225 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2020-12-23 17:22:18,564 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-12-23 17:22:18,863 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-12-23 17:22:20,741 WARN L197 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-23 17:22:24,755 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-12-23 17:22:25,721 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 69