/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-ext-properties/960521-1_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:18:29,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:18:29,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:18:29,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:18:29,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:18:29,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:18:29,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:18:29,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:18:29,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:18:29,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:18:29,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:18:29,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:18:29,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:18:29,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:18:29,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:18:29,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:18:29,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:18:29,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:18:29,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:18:29,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:18:29,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:18:29,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:18:29,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:18:29,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:18:29,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:18:29,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:18:29,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:18:29,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:18:29,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:18:29,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:18:29,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:18:29,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:18:29,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:18:29,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:18:29,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:18:29,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:18:29,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:18:29,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:18:29,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:18:29,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:18:29,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:18:29,558 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:18:29,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:18:29,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:18:29,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:18:29,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:18:29,559 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:18:29,560 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:18:29,560 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:18:29,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:18:29,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:18:29,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:18:29,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:18:29,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:18:29,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:18:29,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:18:29,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:18:29,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:18:29,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:18:29,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:18:29,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:18:29,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:18:30,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:18:30,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:18:30,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:18:30,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:18:30,079 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:18:30,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/960521-1_1-2.i [2021-01-07 05:18:30,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cd26db9f0/0a28354e10824518bb866181c4a08de1/FLAGfb9ed5c95 [2021-01-07 05:18:30,810 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:18:30,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext-properties/960521-1_1-2.i [2021-01-07 05:18:30,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cd26db9f0/0a28354e10824518bb866181c4a08de1/FLAGfb9ed5c95 [2021-01-07 05:18:31,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cd26db9f0/0a28354e10824518bb866181c4a08de1 [2021-01-07 05:18:31,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:18:31,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:18:31,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:18:31,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:18:31,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:18:31,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6002af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31, skipping insertion in model container [2021-01-07 05:18:31,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:18:31,208 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~b~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~n~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~b~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[#t~post11,] [2021-01-07 05:18:31,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:18:31,612 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~b~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~n~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~b~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[#t~post11,] [2021-01-07 05:18:31,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:18:31,735 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:18:31,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31 WrapperNode [2021-01-07 05:18:31,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:18:31,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:18:31,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:18:31,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:18:31,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:18:31,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:18:31,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:18:31,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:18:31,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (1/1) ... [2021-01-07 05:18:31,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:18:31,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:18:31,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:18:31,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:18:31,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:18:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:18:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:18:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 05:18:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:18:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:18:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:18:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:18:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:18:32,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:18:32,533 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-07 05:18:32,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:18:32 BoogieIcfgContainer [2021-01-07 05:18:32,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:18:32,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:18:32,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:18:32,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:18:32,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:18:31" (1/3) ... [2021-01-07 05:18:32,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55927026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:18:32, skipping insertion in model container [2021-01-07 05:18:32,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:31" (2/3) ... [2021-01-07 05:18:32,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55927026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:18:32, skipping insertion in model container [2021-01-07 05:18:32,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:18:32" (3/3) ... [2021-01-07 05:18:32,552 INFO L111 eAbstractionObserver]: Analyzing ICFG 960521-1_1-2.i [2021-01-07 05:18:32,560 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:18:32,565 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2021-01-07 05:18:32,591 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-01-07 05:18:32,630 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:18:32,630 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:18:32,630 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:18:32,631 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:18:32,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:18:32,632 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:18:32,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:18:32,632 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:18:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2021-01-07 05:18:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 05:18:32,664 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:32,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 05:18:32,666 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:32,673 INFO L82 PathProgramCache]: Analyzing trace with hash 28702701, now seen corresponding path program 1 times [2021-01-07 05:18:32,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:32,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094399751] [2021-01-07 05:18:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:32,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094399751] [2021-01-07 05:18:32,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:32,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:18:32,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320507144] [2021-01-07 05:18:32,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-07 05:18:32,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:32,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-07 05:18:32,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:18:32,928 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2021-01-07 05:18:32,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:32,949 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-01-07 05:18:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-07 05:18:32,951 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-01-07 05:18:32,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:32,962 INFO L225 Difference]: With dead ends: 56 [2021-01-07 05:18:32,963 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:18:32,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:18:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:18:33,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-07 05:18:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:18:33,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-01-07 05:18:33,016 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 5 [2021-01-07 05:18:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:33,017 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-01-07 05:18:33,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-07 05:18:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-01-07 05:18:33,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:18:33,018 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:33,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:18:33,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:18:33,020 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:33,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:33,023 INFO L82 PathProgramCache]: Analyzing trace with hash 889569384, now seen corresponding path program 1 times [2021-01-07 05:18:33,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:33,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736547766] [2021-01-07 05:18:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:33,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736547766] [2021-01-07 05:18:33,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:33,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:18:33,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849115230] [2021-01-07 05:18:33,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:18:33,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:33,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:18:33,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:18:33,177 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 3 states. [2021-01-07 05:18:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:33,249 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2021-01-07 05:18:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:18:33,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-01-07 05:18:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:33,251 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:18:33,251 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:18:33,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:18:33,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:18:33,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:18:33,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:18:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2021-01-07 05:18:33,265 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 6 [2021-01-07 05:18:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:33,267 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2021-01-07 05:18:33,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:18:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2021-01-07 05:18:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:18:33,268 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:33,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:18:33,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:18:33,269 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:33,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:33,270 INFO L82 PathProgramCache]: Analyzing trace with hash 889569385, now seen corresponding path program 1 times [2021-01-07 05:18:33,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:33,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642458903] [2021-01-07 05:18:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:33,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642458903] [2021-01-07 05:18:33,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:33,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:18:33,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067685150] [2021-01-07 05:18:33,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:18:33,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:33,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:18:33,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:18:33,386 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 4 states. [2021-01-07 05:18:33,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:33,542 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-01-07 05:18:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:18:33,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-07 05:18:33,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:33,545 INFO L225 Difference]: With dead ends: 103 [2021-01-07 05:18:33,545 INFO L226 Difference]: Without dead ends: 103 [2021-01-07 05:18:33,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:18:33,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-01-07 05:18:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 57. [2021-01-07 05:18:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:18:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-01-07 05:18:33,554 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 6 [2021-01-07 05:18:33,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:33,555 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-01-07 05:18:33,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:18:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-01-07 05:18:33,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:18:33,556 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:33,556 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:33,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:18:33,556 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:33,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:33,557 INFO L82 PathProgramCache]: Analyzing trace with hash 179257870, now seen corresponding path program 1 times [2021-01-07 05:18:33,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:33,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947748550] [2021-01-07 05:18:33,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:33,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947748550] [2021-01-07 05:18:33,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120521121] [2021-01-07 05:18:33,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:33,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:18:33,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:33,803 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-01-07 05:18:33,804 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 1 case distinctions, treesize of input 13 treesize of output 15 [2021-01-07 05:18:33,806 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:33,814 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:33,826 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:18:33,827 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:34 [2021-01-07 05:18:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:33,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:18:33,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-01-07 05:18:33,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280139703] [2021-01-07 05:18:33,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:18:33,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:33,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:18:33,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:18:33,866 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2021-01-07 05:18:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:33,980 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2021-01-07 05:18:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:18:33,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-01-07 05:18:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:33,983 INFO L225 Difference]: With dead ends: 102 [2021-01-07 05:18:33,983 INFO L226 Difference]: Without dead ends: 102 [2021-01-07 05:18:33,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:18:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-07 05:18:33,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 52. [2021-01-07 05:18:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-07 05:18:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-01-07 05:18:33,990 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 8 [2021-01-07 05:18:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:33,991 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-01-07 05:18:33,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:18:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-01-07 05:18:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:18:33,992 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:33,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:34,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:34,207 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1213292751, now seen corresponding path program 1 times [2021-01-07 05:18:34,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:34,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712914014] [2021-01-07 05:18:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:34,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712914014] [2021-01-07 05:18:34,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:34,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:18:34,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222785002] [2021-01-07 05:18:34,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:18:34,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:34,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:18:34,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:18:34,267 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2021-01-07 05:18:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:34,305 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-01-07 05:18:34,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:18:34,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:18:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:34,306 INFO L225 Difference]: With dead ends: 49 [2021-01-07 05:18:34,307 INFO L226 Difference]: Without dead ends: 49 [2021-01-07 05:18:34,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:18:34,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-07 05:18:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-01-07 05:18:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-07 05:18:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2021-01-07 05:18:34,326 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 9 [2021-01-07 05:18:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:34,328 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2021-01-07 05:18:34,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:18:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2021-01-07 05:18:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:18:34,329 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:34,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:34,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:18:34,330 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:34,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1213292752, now seen corresponding path program 1 times [2021-01-07 05:18:34,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:34,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59750137] [2021-01-07 05:18:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:34,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59750137] [2021-01-07 05:18:34,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:34,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:18:34,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613497966] [2021-01-07 05:18:34,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:18:34,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:34,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:18:34,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:18:34,452 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 6 states. [2021-01-07 05:18:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:34,603 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2021-01-07 05:18:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:18:34,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-07 05:18:34,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:34,606 INFO L225 Difference]: With dead ends: 92 [2021-01-07 05:18:34,606 INFO L226 Difference]: Without dead ends: 92 [2021-01-07 05:18:34,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:18:34,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-07 05:18:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 66. [2021-01-07 05:18:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-07 05:18:34,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2021-01-07 05:18:34,612 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 9 [2021-01-07 05:18:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:34,613 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2021-01-07 05:18:34,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:18:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2021-01-07 05:18:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:18:34,614 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:34,614 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:34,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:18:34,615 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:34,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1626816779, now seen corresponding path program 1 times [2021-01-07 05:18:34,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:34,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878227407] [2021-01-07 05:18:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:34,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878227407] [2021-01-07 05:18:34,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948374547] [2021-01-07 05:18:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:34,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:18:34,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:34,811 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-01-07 05:18:34,811 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 1 case distinctions, treesize of input 13 treesize of output 15 [2021-01-07 05:18:34,813 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:34,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:34,828 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:18:34,828 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:34 [2021-01-07 05:18:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:34,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:18:34,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-01-07 05:18:34,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720241231] [2021-01-07 05:18:34,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:18:34,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:34,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:18:34,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:18:34,899 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand 6 states. [2021-01-07 05:18:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:35,091 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2021-01-07 05:18:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:18:35,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-07 05:18:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:35,093 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:18:35,093 INFO L226 Difference]: Without dead ends: 98 [2021-01-07 05:18:35,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:18:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-07 05:18:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 62. [2021-01-07 05:18:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-07 05:18:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-01-07 05:18:35,099 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 11 [2021-01-07 05:18:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:35,099 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-01-07 05:18:35,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:18:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-01-07 05:18:35,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:18:35,100 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:35,101 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:35,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:35,314 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:35,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:35,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1240415274, now seen corresponding path program 1 times [2021-01-07 05:18:35,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:35,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124521365] [2021-01-07 05:18:35,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:35,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124521365] [2021-01-07 05:18:35,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001819651] [2021-01-07 05:18:35,366 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 [2021-01-07 05:18:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:35,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-07 05:18:35,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:35,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:18:35,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-01-07 05:18:35,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023511845] [2021-01-07 05:18:35,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:18:35,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:35,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:18:35,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:18:35,504 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 5 states. [2021-01-07 05:18:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:35,570 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2021-01-07 05:18:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:18:35,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-07 05:18:35,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:35,572 INFO L225 Difference]: With dead ends: 91 [2021-01-07 05:18:35,572 INFO L226 Difference]: Without dead ends: 91 [2021-01-07 05:18:35,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:18:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-07 05:18:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2021-01-07 05:18:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-07 05:18:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-01-07 05:18:35,576 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 12 [2021-01-07 05:18:35,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:35,577 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-01-07 05:18:35,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:18:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-01-07 05:18:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:18:35,578 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:35,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:35,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:35,794 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:35,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1961777546, now seen corresponding path program 1 times [2021-01-07 05:18:35,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:35,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758900988] [2021-01-07 05:18:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:18:35,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758900988] [2021-01-07 05:18:35,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:35,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:18:35,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797792640] [2021-01-07 05:18:35,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:18:35,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:35,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:18:35,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:18:35,834 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 4 states. [2021-01-07 05:18:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:35,891 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2021-01-07 05:18:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:18:35,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-07 05:18:35,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:35,892 INFO L225 Difference]: With dead ends: 58 [2021-01-07 05:18:35,892 INFO L226 Difference]: Without dead ends: 58 [2021-01-07 05:18:35,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:18:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-07 05:18:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-01-07 05:18:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-07 05:18:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2021-01-07 05:18:35,896 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 14 [2021-01-07 05:18:35,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:35,896 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2021-01-07 05:18:35,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:18:35,897 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2021-01-07 05:18:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:18:35,897 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:35,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:35,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-07 05:18:35,898 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:35,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:35,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1961777547, now seen corresponding path program 1 times [2021-01-07 05:18:35,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:35,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987525840] [2021-01-07 05:18:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:18:35,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987525840] [2021-01-07 05:18:35,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:35,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:18:35,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059949431] [2021-01-07 05:18:35,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:18:35,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:35,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:18:35,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:18:35,985 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 6 states. [2021-01-07 05:18:36,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:36,072 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2021-01-07 05:18:36,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:18:36,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-07 05:18:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:36,074 INFO L225 Difference]: With dead ends: 75 [2021-01-07 05:18:36,074 INFO L226 Difference]: Without dead ends: 75 [2021-01-07 05:18:36,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:18:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-07 05:18:36,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2021-01-07 05:18:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-07 05:18:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-01-07 05:18:36,077 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 14 [2021-01-07 05:18:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:36,078 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-01-07 05:18:36,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:18:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-01-07 05:18:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:18:36,079 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:36,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:36,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:18:36,079 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:36,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:36,080 INFO L82 PathProgramCache]: Analyzing trace with hash 87668155, now seen corresponding path program 1 times [2021-01-07 05:18:36,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:36,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181098730] [2021-01-07 05:18:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:36,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181098730] [2021-01-07 05:18:36,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494554664] [2021-01-07 05:18:36,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:36,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-07 05:18:36,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:36,283 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-01-07 05:18:36,284 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 1 case distinctions, treesize of input 13 treesize of output 15 [2021-01-07 05:18:36,286 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:36,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:36,300 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:18:36,300 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:34 [2021-01-07 05:18:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:36,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:18:36,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-01-07 05:18:36,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819944062] [2021-01-07 05:18:36,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:18:36,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:36,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:18:36,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:18:36,397 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 12 states. [2021-01-07 05:18:36,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:36,705 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2021-01-07 05:18:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:18:36,706 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2021-01-07 05:18:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:36,708 INFO L225 Difference]: With dead ends: 110 [2021-01-07 05:18:36,708 INFO L226 Difference]: Without dead ends: 110 [2021-01-07 05:18:36,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:18:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-07 05:18:36,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2021-01-07 05:18:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:18:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2021-01-07 05:18:36,715 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 14 [2021-01-07 05:18:36,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:36,716 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2021-01-07 05:18:36,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:18:36,716 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2021-01-07 05:18:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:18:36,718 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:36,719 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:36,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:36,923 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash 381862667, now seen corresponding path program 2 times [2021-01-07 05:18:36,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:36,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811233582] [2021-01-07 05:18:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:36,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811233582] [2021-01-07 05:18:36,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988449483] [2021-01-07 05:18:36,990 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:37,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:18:37,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:18:37,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:18:37,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:37,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:18:37,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-01-07 05:18:37,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113546126] [2021-01-07 05:18:37,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:18:37,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:37,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:18:37,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:18:37,158 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 11 states. [2021-01-07 05:18:37,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:37,305 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2021-01-07 05:18:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:18:37,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2021-01-07 05:18:37,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:37,307 INFO L225 Difference]: With dead ends: 120 [2021-01-07 05:18:37,315 INFO L226 Difference]: Without dead ends: 120 [2021-01-07 05:18:37,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:18:37,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-01-07 05:18:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 81. [2021-01-07 05:18:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-07 05:18:37,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2021-01-07 05:18:37,322 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 17 [2021-01-07 05:18:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:37,322 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2021-01-07 05:18:37,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:18:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2021-01-07 05:18:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:18:37,327 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:37,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:37,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:18:37,529 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:37,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:37,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1002405181, now seen corresponding path program 1 times [2021-01-07 05:18:37,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:37,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440383837] [2021-01-07 05:18:37,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:18:37,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440383837] [2021-01-07 05:18:37,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:37,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:18:37,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628169813] [2021-01-07 05:18:37,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:18:37,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:37,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:18:37,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:18:37,571 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 3 states. [2021-01-07 05:18:37,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:37,588 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2021-01-07 05:18:37,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:18:37,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-07 05:18:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:37,589 INFO L225 Difference]: With dead ends: 79 [2021-01-07 05:18:37,589 INFO L226 Difference]: Without dead ends: 79 [2021-01-07 05:18:37,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:18:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-07 05:18:37,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-01-07 05:18:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-01-07 05:18:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2021-01-07 05:18:37,593 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 18 [2021-01-07 05:18:37,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:37,593 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2021-01-07 05:18:37,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:18:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2021-01-07 05:18:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:18:37,594 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:37,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:37,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:18:37,595 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:37,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:37,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1897750454, now seen corresponding path program 1 times [2021-01-07 05:18:37,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:37,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941934035] [2021-01-07 05:18:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-07 05:18:37,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941934035] [2021-01-07 05:18:37,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289749377] [2021-01-07 05:18:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:37,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-07 05:18:37,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:37,807 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-01-07 05:18:37,808 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 1 case distinctions, treesize of input 13 treesize of output 15 [2021-01-07 05:18:37,809 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:37,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:37,826 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:18:37,826 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:34 [2021-01-07 05:18:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-07 05:18:37,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:18:37,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-01-07 05:18:37,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413789772] [2021-01-07 05:18:37,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:18:37,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:37,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:18:37,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:18:37,938 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 7 states. [2021-01-07 05:18:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:38,138 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2021-01-07 05:18:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:18:38,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2021-01-07 05:18:38,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:38,140 INFO L225 Difference]: With dead ends: 91 [2021-01-07 05:18:38,140 INFO L226 Difference]: Without dead ends: 91 [2021-01-07 05:18:38,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:18:38,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-07 05:18:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 73. [2021-01-07 05:18:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-07 05:18:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-01-07 05:18:38,144 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 19 [2021-01-07 05:18:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:38,144 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-01-07 05:18:38,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:18:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-01-07 05:18:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:18:38,145 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:38,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:38,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:38,360 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:38,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:38,361 INFO L82 PathProgramCache]: Analyzing trace with hash -951175098, now seen corresponding path program 3 times [2021-01-07 05:18:38,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:38,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381040882] [2021-01-07 05:18:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:38,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381040882] [2021-01-07 05:18:38,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632953330] [2021-01-07 05:18:38,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:38,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:18:38,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:18:38,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:18:38,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:38,591 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-01-07 05:18:38,594 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 1 case distinctions, treesize of input 13 treesize of output 15 [2021-01-07 05:18:38,595 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:38,602 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:38,609 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. [2021-01-07 05:18:38,610 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:18 [2021-01-07 05:18:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 05:18:38,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:18:38,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2021-01-07 05:18:38,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569462468] [2021-01-07 05:18:38,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:18:38,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:38,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:18:38,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:18:38,749 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 14 states. [2021-01-07 05:18:39,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:39,341 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2021-01-07 05:18:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:18:39,342 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2021-01-07 05:18:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:39,343 INFO L225 Difference]: With dead ends: 118 [2021-01-07 05:18:39,343 INFO L226 Difference]: Without dead ends: 118 [2021-01-07 05:18:39,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:18:39,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-01-07 05:18:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 76. [2021-01-07 05:18:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-07 05:18:39,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-01-07 05:18:39,347 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 19 [2021-01-07 05:18:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:39,347 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-01-07 05:18:39,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:18:39,348 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-01-07 05:18:39,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:18:39,348 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:39,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:39,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 05:18:39,564 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:39,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:39,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1225347953, now seen corresponding path program 1 times [2021-01-07 05:18:39,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:39,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69531696] [2021-01-07 05:18:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:18:39,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69531696] [2021-01-07 05:18:39,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:39,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 05:18:39,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127346223] [2021-01-07 05:18:39,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:18:39,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:39,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:18:39,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:18:39,754 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 7 states. [2021-01-07 05:18:39,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:39,906 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2021-01-07 05:18:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:18:39,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-07 05:18:39,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:39,909 INFO L225 Difference]: With dead ends: 88 [2021-01-07 05:18:39,909 INFO L226 Difference]: Without dead ends: 88 [2021-01-07 05:18:39,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:18:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-07 05:18:39,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2021-01-07 05:18:39,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-07 05:18:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-01-07 05:18:39,914 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 20 [2021-01-07 05:18:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:39,915 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-01-07 05:18:39,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:18:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-01-07 05:18:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:18:39,916 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:39,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:39,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:18:39,926 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:39,927 INFO L82 PathProgramCache]: Analyzing trace with hash -254750635, now seen corresponding path program 1 times [2021-01-07 05:18:39,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:39,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810389339] [2021-01-07 05:18:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:18:40,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810389339] [2021-01-07 05:18:40,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:40,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:18:40,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848888413] [2021-01-07 05:18:40,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:18:40,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:40,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:18:40,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:18:40,007 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 3 states. [2021-01-07 05:18:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:40,029 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2021-01-07 05:18:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:18:40,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-01-07 05:18:40,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:40,030 INFO L225 Difference]: With dead ends: 76 [2021-01-07 05:18:40,030 INFO L226 Difference]: Without dead ends: 76 [2021-01-07 05:18:40,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:18:40,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-07 05:18:40,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-01-07 05:18:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-07 05:18:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-01-07 05:18:40,033 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 21 [2021-01-07 05:18:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:40,033 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-01-07 05:18:40,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:18:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-01-07 05:18:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:18:40,034 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:40,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:40,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:18:40,035 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:40,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:40,035 INFO L82 PathProgramCache]: Analyzing trace with hash 692665025, now seen corresponding path program 1 times [2021-01-07 05:18:40,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:40,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51706736] [2021-01-07 05:18:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:18:40,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51706736] [2021-01-07 05:18:40,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:40,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:18:40,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843471009] [2021-01-07 05:18:40,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:18:40,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:40,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:18:40,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:18:40,074 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 4 states. [2021-01-07 05:18:40,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:40,106 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2021-01-07 05:18:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:18:40,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-01-07 05:18:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:40,108 INFO L225 Difference]: With dead ends: 75 [2021-01-07 05:18:40,108 INFO L226 Difference]: Without dead ends: 75 [2021-01-07 05:18:40,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:18:40,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-07 05:18:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-01-07 05:18:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-07 05:18:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-01-07 05:18:40,111 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 22 [2021-01-07 05:18:40,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:40,111 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-01-07 05:18:40,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:18:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-01-07 05:18:40,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:18:40,112 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:40,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:40,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-07 05:18:40,113 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash -548026254, now seen corresponding path program 1 times [2021-01-07 05:18:40,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:40,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587898956] [2021-01-07 05:18:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-07 05:18:40,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587898956] [2021-01-07 05:18:40,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630419708] [2021-01-07 05:18:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:40,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:18:40,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-07 05:18:40,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:18:40,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-01-07 05:18:40,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277102568] [2021-01-07 05:18:40,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:18:40,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:40,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:18:40,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:18:40,377 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 11 states. [2021-01-07 05:18:40,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:40,601 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2021-01-07 05:18:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:18:40,602 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2021-01-07 05:18:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:40,604 INFO L225 Difference]: With dead ends: 101 [2021-01-07 05:18:40,604 INFO L226 Difference]: Without dead ends: 101 [2021-01-07 05:18:40,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:18:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-01-07 05:18:40,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77. [2021-01-07 05:18:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-07 05:18:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-01-07 05:18:40,607 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 23 [2021-01-07 05:18:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:40,609 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-01-07 05:18:40,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:18:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-01-07 05:18:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:18:40,610 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:40,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:40,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:40,826 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:40,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:40,826 INFO L82 PathProgramCache]: Analyzing trace with hash -68838012, now seen corresponding path program 1 times [2021-01-07 05:18:40,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:40,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276463727] [2021-01-07 05:18:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:18:41,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276463727] [2021-01-07 05:18:41,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:41,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:18:41,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821653545] [2021-01-07 05:18:41,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:18:41,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:41,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:18:41,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:18:41,038 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 6 states. [2021-01-07 05:18:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:41,185 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2021-01-07 05:18:41,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:18:41,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-01-07 05:18:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:41,187 INFO L225 Difference]: With dead ends: 76 [2021-01-07 05:18:41,187 INFO L226 Difference]: Without dead ends: 56 [2021-01-07 05:18:41,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:18:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-07 05:18:41,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-01-07 05:18:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-07 05:18:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-01-07 05:18:41,189 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 24 [2021-01-07 05:18:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:41,189 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-01-07 05:18:41,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:18:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-01-07 05:18:41,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:18:41,190 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:41,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:41,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-07 05:18:41,191 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:41,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:41,191 INFO L82 PathProgramCache]: Analyzing trace with hash -119563092, now seen corresponding path program 1 times [2021-01-07 05:18:41,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:41,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632209682] [2021-01-07 05:18:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-07 05:18:41,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632209682] [2021-01-07 05:18:41,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074128520] [2021-01-07 05:18:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:41,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-07 05:18:41,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:41,451 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-01-07 05:18:41,452 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 15 [2021-01-07 05:18:41,453 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:41,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:41,467 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:18:41,468 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:34 [2021-01-07 05:18:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-07 05:18:41,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:18:41,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-01-07 05:18:41,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485278189] [2021-01-07 05:18:41,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:18:41,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:41,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:18:41,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:18:41,615 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 15 states. [2021-01-07 05:18:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:42,010 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-01-07 05:18:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:18:42,011 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2021-01-07 05:18:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:42,012 INFO L225 Difference]: With dead ends: 63 [2021-01-07 05:18:42,012 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:18:42,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:18:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:18:42,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2021-01-07 05:18:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:18:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-01-07 05:18:42,014 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 27 [2021-01-07 05:18:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:42,015 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-01-07 05:18:42,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:18:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-01-07 05:18:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-07 05:18:42,015 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:42,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:42,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:42,229 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:42,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:42,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2041431761, now seen corresponding path program 1 times [2021-01-07 05:18:42,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:42,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823298033] [2021-01-07 05:18:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:42,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823298033] [2021-01-07 05:18:42,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759583575] [2021-01-07 05:18:42,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:42,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-07 05:18:42,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:42,956 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 10 treesize of output 8 [2021-01-07 05:18:42,958 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:42,969 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:42,970 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:18:42,970 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2021-01-07 05:18:43,017 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:18:43,017 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:43,026 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:43,027 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:18:43,028 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2021-01-07 05:18:43,077 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 05:18:43,079 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:43,090 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:43,092 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:18:43,092 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:32 [2021-01-07 05:18:43,180 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:43,181 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 1 case distinctions, treesize of input 34 treesize of output 72 [2021-01-07 05:18:43,183 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:43,217 INFO L625 ElimStorePlain]: treesize reduction 28, result has 60.6 percent of original size [2021-01-07 05:18:43,238 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. [2021-01-07 05:18:43,239 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:47, output treesize:43 [2021-01-07 05:18:43,455 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:43,456 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 78 [2021-01-07 05:18:43,459 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:43,507 INFO L625 ElimStorePlain]: treesize reduction 44, result has 53.2 percent of original size [2021-01-07 05:18:43,513 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. [2021-01-07 05:18:43,514 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:54, output treesize:50 [2021-01-07 05:18:43,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:18:43,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:18:43,754 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:43,755 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 64 [2021-01-07 05:18:43,758 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:43,783 INFO L625 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2021-01-07 05:18:43,786 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:18:43,786 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:91, output treesize:10 [2021-01-07 05:18:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:43,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:18:43,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 22 [2021-01-07 05:18:43,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265402529] [2021-01-07 05:18:43,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-07 05:18:43,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:43,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-07 05:18:43,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:18:43,826 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 22 states. [2021-01-07 05:18:45,102 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2021-01-07 05:18:45,278 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2021-01-07 05:18:45,476 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2021-01-07 05:18:45,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:45,579 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-01-07 05:18:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:18:45,580 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2021-01-07 05:18:45,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:45,580 INFO L225 Difference]: With dead ends: 57 [2021-01-07 05:18:45,580 INFO L226 Difference]: Without dead ends: 39 [2021-01-07 05:18:45,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:18:45,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-07 05:18:45,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-01-07 05:18:45,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-07 05:18:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-01-07 05:18:45,583 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 28 [2021-01-07 05:18:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:45,584 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-01-07 05:18:45,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-07 05:18:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-01-07 05:18:45,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:18:45,584 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:45,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:45,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:45,799 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:45,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:45,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1376195477, now seen corresponding path program 2 times [2021-01-07 05:18:45,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:45,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622555384] [2021-01-07 05:18:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-07 05:18:45,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622555384] [2021-01-07 05:18:45,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337511700] [2021-01-07 05:18:45,866 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:45,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:18:45,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:18:45,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:18:45,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-07 05:18:46,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:18:46,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-01-07 05:18:46,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017072090] [2021-01-07 05:18:46,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:18:46,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:18:46,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:18:46,021 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 12 states. [2021-01-07 05:18:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:46,125 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2021-01-07 05:18:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:18:46,125 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2021-01-07 05:18:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:46,126 INFO L225 Difference]: With dead ends: 70 [2021-01-07 05:18:46,126 INFO L226 Difference]: Without dead ends: 70 [2021-01-07 05:18:46,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:18:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-07 05:18:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2021-01-07 05:18:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-07 05:18:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-01-07 05:18:46,129 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 30 [2021-01-07 05:18:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:46,129 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-01-07 05:18:46,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:18:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-01-07 05:18:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-07 05:18:46,130 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:46,130 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:46,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-07 05:18:46,344 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:46,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:46,345 INFO L82 PathProgramCache]: Analyzing trace with hash -493809904, now seen corresponding path program 3 times [2021-01-07 05:18:46,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:46,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377878979] [2021-01-07 05:18:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-07 05:18:46,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377878979] [2021-01-07 05:18:46,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426878738] [2021-01-07 05:18:46,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:46,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:18:46,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:18:46,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:18:46,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:46,523 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-01-07 05:18:46,523 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 1 case distinctions, treesize of input 13 treesize of output 15 [2021-01-07 05:18:46,524 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:46,532 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:46,533 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. [2021-01-07 05:18:46,534 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:18 [2021-01-07 05:18:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-01-07 05:18:46,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:18:46,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2021-01-07 05:18:46,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293108445] [2021-01-07 05:18:46,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:18:46,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:46,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:18:46,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:18:46,655 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 14 states. [2021-01-07 05:18:47,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:47,311 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2021-01-07 05:18:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:18:47,312 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2021-01-07 05:18:47,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:47,312 INFO L225 Difference]: With dead ends: 74 [2021-01-07 05:18:47,312 INFO L226 Difference]: Without dead ends: 74 [2021-01-07 05:18:47,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:18:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-07 05:18:47,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2021-01-07 05:18:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-07 05:18:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-01-07 05:18:47,315 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 32 [2021-01-07 05:18:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:47,316 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-01-07 05:18:47,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:18:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-01-07 05:18:47,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-07 05:18:47,316 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:47,317 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:47,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-07 05:18:47,527 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:18:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:47,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2126397797, now seen corresponding path program 2 times [2021-01-07 05:18:47,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:47,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752993531] [2021-01-07 05:18:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:48,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752993531] [2021-01-07 05:18:48,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743944954] [2021-01-07 05:18:48,752 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:18:48,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:18:48,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:18:48,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-07 05:18:48,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:18:48,846 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 10 treesize of output 8 [2021-01-07 05:18:48,851 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:48,862 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:48,862 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:18:48,863 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2021-01-07 05:18:48,908 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:18:48,909 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:48,917 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:48,918 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:18:48,918 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2021-01-07 05:18:48,970 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 05:18:48,971 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:48,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:48,984 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:18:48,984 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:32 [2021-01-07 05:18:49,075 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:49,076 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 1 case distinctions, treesize of input 34 treesize of output 72 [2021-01-07 05:18:49,080 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:49,120 INFO L625 ElimStorePlain]: treesize reduction 28, result has 60.6 percent of original size [2021-01-07 05:18:49,122 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:18:49,122 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:43 [2021-01-07 05:18:49,205 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:49,205 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 1 case distinctions, treesize of input 34 treesize of output 72 [2021-01-07 05:18:49,207 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:49,242 INFO L625 ElimStorePlain]: treesize reduction 28, result has 60.6 percent of original size [2021-01-07 05:18:49,248 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. [2021-01-07 05:18:49,249 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:47, output treesize:43 [2021-01-07 05:18:55,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:18:55,541 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:18:55,542 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 66 [2021-01-07 05:18:55,544 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:18:55,589 INFO L625 ElimStorePlain]: treesize reduction 28, result has 67.1 percent of original size [2021-01-07 05:18:55,592 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. [2021-01-07 05:18:55,593 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:57 [2021-01-07 05:19:01,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:19:01,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:19:01,840 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:01,841 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 74 [2021-01-07 05:19:01,844 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:01,886 INFO L625 ElimStorePlain]: treesize reduction 28, result has 67.8 percent of original size [2021-01-07 05:19:01,890 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. [2021-01-07 05:19:01,890 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:63, output treesize:59 [2021-01-07 05:19:04,202 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:04,205 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 89 treesize of output 72 [2021-01-07 05:19:04,208 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:04,228 INFO L625 ElimStorePlain]: treesize reduction 27, result has 34.1 percent of original size [2021-01-07 05:19:04,229 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:19:04,230 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:93, output treesize:10 [2021-01-07 05:19:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 05:19:04,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:19:04,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 30 [2021-01-07 05:19:04,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404376523] [2021-01-07 05:19:04,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:19:04,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:19:04,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:19:04,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=772, Unknown=6, NotChecked=0, Total=870 [2021-01-07 05:19:04,286 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 30 states. [2021-01-07 05:19:05,213 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2021-01-07 05:19:06,129 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2021-01-07 05:19:06,295 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2021-01-07 05:19:06,489 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2021-01-07 05:19:06,689 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 51 [2021-01-07 05:19:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:19:06,762 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2021-01-07 05:19:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:19:06,763 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2021-01-07 05:19:06,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:19:06,763 INFO L225 Difference]: With dead ends: 69 [2021-01-07 05:19:06,763 INFO L226 Difference]: Without dead ends: 45 [2021-01-07 05:19:06,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=325, Invalid=1831, Unknown=6, NotChecked=0, Total=2162 [2021-01-07 05:19:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-07 05:19:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-01-07 05:19:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-07 05:19:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-01-07 05:19:06,766 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 36 [2021-01-07 05:19:06,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:19:06,766 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-01-07 05:19:06,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:19:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-01-07 05:19:06,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-07 05:19:06,767 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:19:06,767 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:19:06,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-07 05:19:06,983 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:19:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:19:06,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1858645957, now seen corresponding path program 3 times [2021-01-07 05:19:06,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:19:06,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270973285] [2021-01-07 05:19:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:19:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:19:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:19:08,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270973285] [2021-01-07 05:19:08,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081771431] [2021-01-07 05:19:08,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:19:08,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-07 05:19:08,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:19:08,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:19:08,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:19:08,368 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 10 treesize of output 8 [2021-01-07 05:19:08,370 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:08,380 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:08,381 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:19:08,381 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-07 05:19:08,435 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:19:08,436 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:08,443 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:08,444 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:19:08,444 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2021-01-07 05:19:08,493 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 05:19:08,495 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:08,514 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:08,515 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:19:08,515 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:29 [2021-01-07 05:19:08,595 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:08,596 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 1 case distinctions, treesize of input 34 treesize of output 72 [2021-01-07 05:19:08,598 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:08,632 INFO L625 ElimStorePlain]: treesize reduction 28, result has 58.8 percent of original size [2021-01-07 05:19:08,634 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:19:08,634 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:40 [2021-01-07 05:19:08,712 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:08,712 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 1 case distinctions, treesize of input 34 treesize of output 72 [2021-01-07 05:19:08,714 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:08,744 INFO L625 ElimStorePlain]: treesize reduction 28, result has 58.8 percent of original size [2021-01-07 05:19:08,746 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:19:08,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:40 [2021-01-07 05:19:08,822 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:08,822 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 1 case distinctions, treesize of input 34 treesize of output 72 [2021-01-07 05:19:08,828 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:08,861 INFO L625 ElimStorePlain]: treesize reduction 28, result has 58.8 percent of original size [2021-01-07 05:19:08,864 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. [2021-01-07 05:19:08,865 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:40 [2021-01-07 05:19:13,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:19:13,163 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:13,164 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 66 [2021-01-07 05:19:13,166 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:13,207 INFO L625 ElimStorePlain]: treesize reduction 28, result has 67.8 percent of original size [2021-01-07 05:19:13,211 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-01-07 05:19:13,211 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:63, output treesize:59 [2021-01-07 05:19:21,430 WARN L197 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-01-07 05:19:21,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:19:21,508 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:21,508 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 140 [2021-01-07 05:19:21,514 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:21,588 INFO L625 ElimStorePlain]: treesize reduction 52, result has 57.4 percent of original size [2021-01-07 05:19:21,592 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-01-07 05:19:21,593 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:74, output treesize:70 [2021-01-07 05:19:24,511 WARN L197 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-01-07 05:19:38,284 WARN L197 SmtUtils]: Spent 2.95 s on a formula simplification that was a NOOP. DAG size: 50 [2021-01-07 05:19:43,415 WARN L197 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 52 [2021-01-07 05:19:43,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:19:43,522 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:43,523 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 218 [2021-01-07 05:19:43,527 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:43,633 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2021-01-07 05:19:43,634 INFO L625 ElimStorePlain]: treesize reduction 80, result has 53.2 percent of original size [2021-01-07 05:19:43,637 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. [2021-01-07 05:19:43,638 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:95, output treesize:91 [2021-01-07 05:19:47,549 WARN L197 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-01-07 05:19:52,047 WARN L197 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 51 [2021-01-07 05:19:56,410 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:19:56,410 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 93 treesize of output 84 [2021-01-07 05:19:56,414 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:19:56,438 INFO L625 ElimStorePlain]: treesize reduction 21, result has 50.0 percent of original size [2021-01-07 05:19:56,441 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:19:56,441 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:97, output treesize:7 [2021-01-07 05:19:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:19:56,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:19:56,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 38 [2021-01-07 05:19:56,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026702789] [2021-01-07 05:19:56,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-07 05:19:56,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:19:56,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-07 05:19:56,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1200, Unknown=19, NotChecked=0, Total=1406 [2021-01-07 05:19:56,506 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 38 states. [2021-01-07 05:20:03,847 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2021-01-07 05:20:04,076 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2021-01-07 05:20:08,494 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 48 [2021-01-07 05:20:08,730 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 39 [2021-01-07 05:20:09,090 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 46 [2021-01-07 05:20:09,485 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 38 [2021-01-07 05:20:10,021 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 41 [2021-01-07 05:20:10,210 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2021-01-07 05:20:10,444 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 40 [2021-01-07 05:20:10,668 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 43 [2021-01-07 05:20:10,895 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 43 [2021-01-07 05:20:11,341 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 48 [2021-01-07 05:20:23,702 WARN L197 SmtUtils]: Spent 11.77 s on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2021-01-07 05:20:26,423 WARN L197 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 93 DAG size of output: 51 [2021-01-07 05:20:28,654 WARN L197 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2021-01-07 05:20:32,829 WARN L197 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2021-01-07 05:20:33,122 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 44 [2021-01-07 05:20:33,366 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 46 [2021-01-07 05:20:33,644 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 50 [2021-01-07 05:20:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:20:33,646 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2021-01-07 05:20:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-07 05:20:33,646 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 44 [2021-01-07 05:20:33,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:20:33,646 INFO L225 Difference]: With dead ends: 62 [2021-01-07 05:20:33,646 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:20:33,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 27 SyntacticMatches, 8 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1398 ImplicationChecksByTransitivity, 84.0s TimeCoverageRelationStatistics Valid=1138, Invalid=4538, Unknown=24, NotChecked=0, Total=5700 [2021-01-07 05:20:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:20:33,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:20:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:20:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:20:33,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2021-01-07 05:20:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:20:33,650 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:20:33,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-07 05:20:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:20:33,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:20:33,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:20:33,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:20:33 BoogieIcfgContainer [2021-01-07 05:20:33,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:20:33,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:20:33,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:20:33,859 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:20:33,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:18:32" (3/4) ... [2021-01-07 05:20:33,863 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:20:33,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-07 05:20:33,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-07 05:20:33,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-01-07 05:20:33,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-07 05:20:33,918 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-ext-properties/960521-1_1-2.i-witness.graphml [2021-01-07 05:20:33,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:20:33,919 INFO L168 Benchmark]: Toolchain (without parser) took 122803.44 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 125.3 MB in the beginning and 123.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 174.7 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:33,919 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:20:33,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.05 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 103.6 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:33,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.38 ms. Allocated memory is still 151.0 MB. Free memory was 103.4 MB in the beginning and 101.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:33,920 INFO L168 Benchmark]: Boogie Preprocessor took 31.91 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 100.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:33,921 INFO L168 Benchmark]: RCFGBuilder took 681.09 ms. Allocated memory is still 151.0 MB. Free memory was 100.3 MB in the beginning and 113.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:33,921 INFO L168 Benchmark]: TraceAbstraction took 121318.81 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 113.0 MB in the beginning and 126.0 MB in the end (delta: -13.0 MB). Peak memory consumption was 160.6 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:33,922 INFO L168 Benchmark]: Witness Printer took 59.37 ms. Allocated memory is still 323.0 MB. Free memory was 126.0 MB in the beginning and 123.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:20:33,924 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 616.05 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 103.6 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 83.38 ms. Allocated memory is still 151.0 MB. Free memory was 103.4 MB in the beginning and 101.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.91 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 100.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 681.09 ms. Allocated memory is still 151.0 MB. Free memory was 100.3 MB in the beginning and 113.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 121318.81 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 113.0 MB in the beginning and 126.0 MB in the end (delta: -13.0 MB). Peak memory consumption was 160.6 MB. Max. memory is 8.0 GB. * Witness Printer took 59.37 ms. Allocated memory is still 323.0 MB. Free memory was 126.0 MB in the beginning and 123.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 542]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 542]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 547]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 545]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 545]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 547]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 545]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 534]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 23 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 23 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 121.2s, OverallIterations: 26, TraceHistogramMax: 4, AutomataDifference: 45.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 900 SDtfs, 2420 SDslu, 1773 SDs, 0 SdLazy, 3745 SolverSat, 574 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 616 GetRequests, 263 SyntacticMatches, 20 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2455 ImplicationChecksByTransitivity, 106.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 407 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 70.7s InterpolantComputationTime, 808 NumberOfCodeBlocks, 790 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 768 ConstructedInterpolants, 54 QuantifiedInterpolants, 313701 SizeOfPredicates, 92 NumberOfNonLiveVariables, 1536 ConjunctsInSsa, 222 ConjunctsInUnsatCore, 40 InterpolantComputations, 16 PerfectInterpolantSequences, 218/407 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...