/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/memsafety/test-0019-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:59:05,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:59:05,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:59:05,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:59:05,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:59:05,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:59:05,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:59:05,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:59:05,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:59:05,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:59:05,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:59:05,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:59:05,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:59:05,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:59:05,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:59:05,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:59:05,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:59:05,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:59:05,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:59:05,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:59:05,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:59:05,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:59:05,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:59:05,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:59:05,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:59:05,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:59:05,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:59:05,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:59:05,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:59:05,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:59:05,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:59:05,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:59:05,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:59:05,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:59:05,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:59:05,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:59:05,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 16:59:05,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:59:05,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:59:05,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:59:05,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:59:05,905 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:59:05,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:59:05,906 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:59:05,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:59:05,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:59:05,907 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:59:05,908 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:59:05,908 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:59:05,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:59:05,909 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:59:05,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:59:05,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:59:05,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:59:05,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:59:05,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:59:05,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:59:05,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:59:05,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:59:05,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:59:05,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:59:05,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:59:06,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:59:06,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:59:06,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:59:06,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:59:06,431 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:59:06,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-2.i [2020-12-23 16:59:06,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c1cc8dcff/dfaf09ab88a44f22be82b4cf1e682f94/FLAGec5a2387d [2020-12-23 16:59:07,262 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:59:07,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-2.i [2020-12-23 16:59:07,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c1cc8dcff/dfaf09ab88a44f22be82b4cf1e682f94/FLAGec5a2387d [2020-12-23 16:59:07,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c1cc8dcff/dfaf09ab88a44f22be82b4cf1e682f94 [2020-12-23 16:59:07,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:59:07,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:59:07,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:59:07,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:59:07,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:59:07,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7452a2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07, skipping insertion in model container [2020-12-23 16:59:07,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:59:07,580 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~pdata,],base],StructAccessExpression[IdentifierExpression[~pdata,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~pdata,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~pdata,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],StructAccessExpression[IdentifierExpression[~data,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~data,],offset]]]] [2020-12-23 16:59:07,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:59:07,919 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~pdata,],base],StructAccessExpression[IdentifierExpression[~pdata,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~pdata,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~pdata,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],StructAccessExpression[IdentifierExpression[~data,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~data,],offset]]]] [2020-12-23 16:59:07,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:59:08,050 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:59:08,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08 WrapperNode [2020-12-23 16:59:08,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:59:08,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:59:08,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:59:08,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:59:08,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (1/1) ... [2020-12-23 16:59:08,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (1/1) ... [2020-12-23 16:59:08,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:59:08,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:59:08,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:59:08,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:59:08,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (1/1) ... [2020-12-23 16:59:08,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (1/1) ... [2020-12-23 16:59:08,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (1/1) ... [2020-12-23 16:59:08,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (1/1) ... [2020-12-23 16:59:08,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (1/1) ... [2020-12-23 16:59:08,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (1/1) ... [2020-12-23 16:59:08,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (1/1) ... [2020-12-23 16:59:08,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:59:08,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:59:08,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:59:08,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:59:08,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:59:08,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 16:59:08,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 16:59:08,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:59:08,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 16:59:08,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:59:08,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 16:59:08,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:59:08,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:59:08,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:59:08,668 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 16:59:08,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:59:08 BoogieIcfgContainer [2020-12-23 16:59:08,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:59:08,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:59:08,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:59:08,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:59:08,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:59:07" (1/3) ... [2020-12-23 16:59:08,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@470f8591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:59:08, skipping insertion in model container [2020-12-23 16:59:08,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:08" (2/3) ... [2020-12-23 16:59:08,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@470f8591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:59:08, skipping insertion in model container [2020-12-23 16:59:08,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:59:08" (3/3) ... [2020-12-23 16:59:08,684 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2020-12-23 16:59:08,693 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:59:08,700 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-12-23 16:59:08,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-12-23 16:59:08,778 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:59:08,778 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:59:08,779 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:59:08,781 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:59:08,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:59:08,782 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:59:08,782 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:59:08,782 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:59:08,825 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-23 16:59:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 16:59:08,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:08,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 16:59:08,841 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:59:08,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:08,851 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-12-23 16:59:08,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:08,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832330403] [2020-12-23 16:59:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:59:09,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832330403] [2020-12-23 16:59:09,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:09,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:59:09,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842950750] [2020-12-23 16:59:09,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:59:09,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:09,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:59:09,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:59:09,212 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-12-23 16:59:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:09,345 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-12-23 16:59:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:59:09,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 16:59:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:09,362 INFO L225 Difference]: With dead ends: 47 [2020-12-23 16:59:09,363 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 16:59:09,366 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 [2020-12-23 16:59:09,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 16:59:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2020-12-23 16:59:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 16:59:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-12-23 16:59:09,435 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 3 [2020-12-23 16:59:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:09,435 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-12-23 16:59:09,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:59:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-12-23 16:59:09,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 16:59:09,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:09,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 16:59:09,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:59:09,439 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:59:09,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:09,443 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-12-23 16:59:09,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:09,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661649623] [2020-12-23 16:59:09,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:59:09,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661649623] [2020-12-23 16:59:09,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:09,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:59:09,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418870772] [2020-12-23 16:59:09,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:59:09,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:09,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:59:09,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:59:09,566 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 3 states. [2020-12-23 16:59:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:09,606 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-12-23 16:59:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:59:09,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 16:59:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:09,608 INFO L225 Difference]: With dead ends: 37 [2020-12-23 16:59:09,608 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 16:59:09,609 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 [2020-12-23 16:59:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 16:59:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 16:59:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 16:59:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-12-23 16:59:09,616 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 3 [2020-12-23 16:59:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:09,617 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-12-23 16:59:09,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:59:09,617 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-12-23 16:59:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 16:59:09,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:09,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 16:59:09,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:59:09,619 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:59:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:09,620 INFO L82 PathProgramCache]: Analyzing trace with hash 28691811, now seen corresponding path program 1 times [2020-12-23 16:59:09,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:09,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58988548] [2020-12-23 16:59:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:59:09,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58988548] [2020-12-23 16:59:09,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:09,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:59:09,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984328643] [2020-12-23 16:59:09,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:59:09,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:09,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:59:09,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:59:09,703 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 4 states. [2020-12-23 16:59:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:09,803 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-12-23 16:59:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:59:09,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-23 16:59:09,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:09,805 INFO L225 Difference]: With dead ends: 43 [2020-12-23 16:59:09,805 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 16:59:09,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:59:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 16:59:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-12-23 16:59:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 16:59:09,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-12-23 16:59:09,812 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 5 [2020-12-23 16:59:09,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:09,813 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-12-23 16:59:09,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:59:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-12-23 16:59:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:59:09,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:09,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:09,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 16:59:09,815 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:59:09,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:09,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1803025027, now seen corresponding path program 1 times [2020-12-23 16:59:09,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:09,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692483354] [2020-12-23 16:59:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:59:09,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692483354] [2020-12-23 16:59:09,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:09,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:59:09,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455782630] [2020-12-23 16:59:09,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:59:09,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:09,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:59:09,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:59:09,886 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-12-23 16:59:10,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:10,006 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-12-23 16:59:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:59:10,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-23 16:59:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:10,008 INFO L225 Difference]: With dead ends: 38 [2020-12-23 16:59:10,008 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 16:59:10,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:59:10,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 16:59:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-12-23 16:59:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 16:59:10,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-12-23 16:59:10,015 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 7 [2020-12-23 16:59:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:10,016 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-12-23 16:59:10,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:59:10,016 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-12-23 16:59:10,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:59:10,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:10,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:10,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 16:59:10,017 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:59:10,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:10,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1803025028, now seen corresponding path program 1 times [2020-12-23 16:59:10,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:10,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187856260] [2020-12-23 16:59:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:59:10,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187856260] [2020-12-23 16:59:10,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:10,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:59:10,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069933217] [2020-12-23 16:59:10,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:59:10,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:10,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:59:10,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:59:10,138 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 5 states. [2020-12-23 16:59:10,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:10,216 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-12-23 16:59:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:59:10,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-23 16:59:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:10,217 INFO L225 Difference]: With dead ends: 30 [2020-12-23 16:59:10,218 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 16:59:10,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:59:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 16:59:10,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-23 16:59:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 16:59:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-12-23 16:59:10,222 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 7 [2020-12-23 16:59:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:10,223 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-12-23 16:59:10,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:59:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-12-23 16:59:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:59:10,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:10,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:10,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 16:59:10,224 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:59:10,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:10,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1591396527, now seen corresponding path program 1 times [2020-12-23 16:59:10,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:10,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499873745] [2020-12-23 16:59:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:59:10,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499873745] [2020-12-23 16:59:10,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:10,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 16:59:10,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2367976] [2020-12-23 16:59:10,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:59:10,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:10,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:59:10,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:59:10,331 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 8 states. [2020-12-23 16:59:10,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:10,486 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-12-23 16:59:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:59:10,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-23 16:59:10,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:10,487 INFO L225 Difference]: With dead ends: 29 [2020-12-23 16:59:10,488 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 16:59:10,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:59:10,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 16:59:10,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 16:59:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 16:59:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-23 16:59:10,492 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 12 [2020-12-23 16:59:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:10,493 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-23 16:59:10,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:59:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-23 16:59:10,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 16:59:10,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:10,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:10,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 16:59:10,494 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:59:10,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:10,495 INFO L82 PathProgramCache]: Analyzing trace with hash -2088652025, now seen corresponding path program 1 times [2020-12-23 16:59:10,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:10,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352074582] [2020-12-23 16:59:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:59:10,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352074582] [2020-12-23 16:59:10,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:10,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 16:59:10,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539049091] [2020-12-23 16:59:10,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:59:10,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:10,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:59:10,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:59:10,645 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2020-12-23 16:59:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:10,827 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-23 16:59:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:59:10,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-12-23 16:59:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:10,829 INFO L225 Difference]: With dead ends: 28 [2020-12-23 16:59:10,829 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 16:59:10,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:59:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 16:59:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-23 16:59:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 16:59:10,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-12-23 16:59:10,833 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 13 [2020-12-23 16:59:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:10,834 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-12-23 16:59:10,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:59:10,834 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-12-23 16:59:10,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 16:59:10,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:10,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:10,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 16:59:10,836 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:59:10,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:10,836 INFO L82 PathProgramCache]: Analyzing trace with hash -323703277, now seen corresponding path program 1 times [2020-12-23 16:59:10,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:10,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110246928] [2020-12-23 16:59:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:59:10,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110246928] [2020-12-23 16:59:10,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:10,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 16:59:10,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140870633] [2020-12-23 16:59:10,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:59:10,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:10,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:59:10,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:59:10,968 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2020-12-23 16:59:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:11,156 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-12-23 16:59:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:59:11,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-23 16:59:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:11,157 INFO L225 Difference]: With dead ends: 29 [2020-12-23 16:59:11,157 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 16:59:11,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:59:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 16:59:11,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-12-23 16:59:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 16:59:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-12-23 16:59:11,161 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2020-12-23 16:59:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:11,162 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-12-23 16:59:11,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:59:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-12-23 16:59:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 16:59:11,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:11,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:11,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 16:59:11,163 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-23 16:59:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:11,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1431505607, now seen corresponding path program 1 times [2020-12-23 16:59:11,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:11,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850813666] [2020-12-23 16:59:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 16:59:11,192 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 16:59:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 16:59:11,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 16:59:11,243 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 16:59:11,243 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 16:59:11,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 16:59:11,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 04:59:11 BoogieIcfgContainer [2020-12-23 16:59:11,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 16:59:11,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 16:59:11,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 16:59:11,287 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 16:59:11,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:59:08" (3/4) ... [2020-12-23 16:59:11,292 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 16:59:11,292 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 16:59:11,301 INFO L168 Benchmark]: Toolchain (without parser) took 3773.85 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.2 MB in the beginning and 120.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 35.9 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:11,302 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 16:59:11,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.80 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 103.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:11,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.68 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 101.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:11,304 INFO L168 Benchmark]: Boogie Preprocessor took 57.75 ms. Allocated memory is still 151.0 MB. Free memory was 101.8 MB in the beginning and 134.1 MB in the end (delta: -32.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:11,308 INFO L168 Benchmark]: RCFGBuilder took 509.04 ms. Allocated memory is still 151.0 MB. Free memory was 134.1 MB in the beginning and 113.9 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:11,309 INFO L168 Benchmark]: TraceAbstraction took 2612.84 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 113.4 MB in the beginning and 121.4 MB in the end (delta: -8.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:11,312 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 181.4 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 16:59:11,322 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 529.80 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 103.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.68 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 101.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.75 ms. Allocated memory is still 151.0 MB. Free memory was 101.8 MB in the beginning and 134.1 MB in the end (delta: -32.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 509.04 ms. Allocated memory is still 151.0 MB. Free memory was 134.1 MB in the beginning and 113.9 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2612.84 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 113.4 MB in the beginning and 121.4 MB in the end (delta: -8.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. * Witness Printer took 5.87 ms. Allocated memory is still 181.4 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; [L529] pdata->lo = malloc(16) [L530] pdata->hi = malloc(24) [L534] EXPR data->lo [L534] void *lo = data->lo; [L535] EXPR data->hi [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) [L540] data->lo = (void *) 0 [L541] data->hi = (void *) 0 [L547] return 0; [L547] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 19 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 151 SDtfs, 389 SDslu, 113 SDs, 0 SdLazy, 315 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 3716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...