/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-0019-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:59:05,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:59:05,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:59:05,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:59:05,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:59:05,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:59:05,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:59:05,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:59:05,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:59:05,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:59:05,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:59:05,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:59:05,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:59:05,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:59:05,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:59:05,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:59:05,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:59:05,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:59:05,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:59:05,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:59:05,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:59:05,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:59:05,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:59:05,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:59:05,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:59:05,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:59:05,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:59:05,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:59:05,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:59:05,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:59:05,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:59:05,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:59:05,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:59:05,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:59:05,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:59:05,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:59:05,476 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 16:59:05,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:59:05,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:59:05,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:59:05,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:59:05,531 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:59:05,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:59:05,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:59:05,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:59:05,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:59:05,532 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:59:05,533 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:59:05,533 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:59:05,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:59:05,534 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:59:05,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:59:05,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:59:05,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:59:05,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:59:05,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:59:05,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:59:05,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:59:05,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:59:05,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:59:05,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:59:05,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:59:05,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:59:05,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:59:05,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:59:05,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:59:05,959 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:59:05,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-1.i [2020-12-23 16:59:06,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/959ba1dcd/7e07611fead144b0a22ebafc8b7718ae/FLAGe1d4bf8ff [2020-12-23 16:59:06,774 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:59:06,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-1.i [2020-12-23 16:59:06,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/959ba1dcd/7e07611fead144b0a22ebafc8b7718ae/FLAGe1d4bf8ff [2020-12-23 16:59:07,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/959ba1dcd/7e07611fead144b0a22ebafc8b7718ae [2020-12-23 16:59:07,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:59:07,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:59:07,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:59:07,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:59:07,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:59:07,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659fd6f0 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 16:59:07,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:59:07,142 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]]]] [2020-12-23 16:59:07,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:59:07,469 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]]]] [2020-12-23 16:59:07,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:59:07,601 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:59:07,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07 WrapperNode [2020-12-23 16:59:07,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:59:07,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:59:07,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:59:07,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:59:07,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:59:07,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:59:07,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:59:07,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:59:07,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (1/1) ... [2020-12-23 16:59:07,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:59:07,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:59:07,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:59:07,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:59:07,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (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 16:59:07,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 16:59:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 16:59:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:59:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 16:59:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:59:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 16:59:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:59:07,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:59:08,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:59:08,303 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 16:59:08,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:59:08 BoogieIcfgContainer [2020-12-23 16:59:08,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:59:08,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:59:08,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:59:08,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:59:08,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:59:07" (1/3) ... [2020-12-23 16:59:08,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a973e43 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 16:59:08,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:07" (2/3) ... [2020-12-23 16:59:08,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a973e43 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 16:59:08,321 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 16:59:08,327 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-1.i [2020-12-23 16:59:08,338 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:59:08,346 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-12-23 16:59:08,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-12-23 16:59:08,407 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:59:08,407 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:59:08,407 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:59:08,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:59:08,408 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:59:08,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:59:08,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:59:08,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:59:08,432 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-12-23 16:59:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 16:59:08,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:08,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 16:59:08,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:08,448 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-12-23 16:59:08,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:08,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342771698] [2020-12-23 16:59:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:08,751 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 16:59:08,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342771698] [2020-12-23 16:59:08,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:08,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:59:08,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553789463] [2020-12-23 16:59:08,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:59:08,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:08,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:59:08,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:59:08,780 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2020-12-23 16:59:08,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:08,898 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-12-23 16:59:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:59:08,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 16:59:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:08,911 INFO L225 Difference]: With dead ends: 46 [2020-12-23 16:59:08,911 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 16:59:08,913 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 16:59:08,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 16:59:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-12-23 16:59:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 16:59:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2020-12-23 16:59:08,956 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 3 [2020-12-23 16:59:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:08,957 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2020-12-23 16:59:08,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:59:08,957 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2020-12-23 16:59:08,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 16:59:08,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:08,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 16:59:08,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:59:08,958 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:08,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:08,960 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-12-23 16:59:08,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:08,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186389264] [2020-12-23 16:59:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:09,020 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 16:59:09,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186389264] [2020-12-23 16:59:09,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:09,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:59:09,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012494609] [2020-12-23 16:59:09,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:59:09,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:09,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:59:09,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:59:09,025 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 3 states. [2020-12-23 16:59:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:09,087 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-12-23 16:59:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:59:09,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 16:59:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:09,090 INFO L225 Difference]: With dead ends: 43 [2020-12-23 16:59:09,090 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 16:59:09,091 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 16:59:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 16:59:09,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-23 16:59:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 16:59:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-12-23 16:59:09,098 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 3 [2020-12-23 16:59:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:09,099 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-12-23 16:59:09,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:59:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-12-23 16:59:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 16:59:09,100 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:09,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 16:59:09,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:59:09,101 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:09,102 INFO L82 PathProgramCache]: Analyzing trace with hash 28691811, now seen corresponding path program 1 times [2020-12-23 16:59:09,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:09,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371199782] [2020-12-23 16:59:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:09,225 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 16:59:09,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371199782] [2020-12-23 16:59:09,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:09,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:59:09,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792550892] [2020-12-23 16:59:09,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:59:09,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:09,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:59:09,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:59:09,230 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 4 states. [2020-12-23 16:59:09,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:09,339 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-12-23 16:59:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:59:09,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-23 16:59:09,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:09,341 INFO L225 Difference]: With dead ends: 42 [2020-12-23 16:59:09,341 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 16:59:09,342 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 16:59:09,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 16:59:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-23 16:59:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 16:59:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-12-23 16:59:09,348 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 5 [2020-12-23 16:59:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:09,349 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-12-23 16:59:09,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:59:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-12-23 16:59:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 16:59:09,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:09,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 16:59:09,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 16:59:09,350 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:09,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:09,351 INFO L82 PathProgramCache]: Analyzing trace with hash 889446091, now seen corresponding path program 1 times [2020-12-23 16:59:09,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:09,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519014900] [2020-12-23 16:59:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:09,400 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 16:59:09,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519014900] [2020-12-23 16:59:09,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:09,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:59:09,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415016429] [2020-12-23 16:59:09,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:59:09,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:09,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:59:09,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:59:09,403 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 4 states. [2020-12-23 16:59:09,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:09,476 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-12-23 16:59:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:59:09,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 16:59:09,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:09,478 INFO L225 Difference]: With dead ends: 40 [2020-12-23 16:59:09,478 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 16:59:09,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:59:09,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 16:59:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-23 16:59:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 16:59:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-12-23 16:59:09,489 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 6 [2020-12-23 16:59:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:09,489 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-12-23 16:59:09,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:59:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-12-23 16:59:09,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 16:59:09,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:09,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 16:59:09,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 16:59:09,491 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:09,492 INFO L82 PathProgramCache]: Analyzing trace with hash 889446092, now seen corresponding path program 1 times [2020-12-23 16:59:09,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:09,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916795577] [2020-12-23 16:59:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:09,658 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 16:59:09,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916795577] [2020-12-23 16:59:09,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:09,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:59:09,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737590062] [2020-12-23 16:59:09,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:59:09,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:09,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:59:09,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:59:09,661 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 5 states. [2020-12-23 16:59:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:09,718 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-12-23 16:59:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:59:09,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-23 16:59:09,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:09,720 INFO L225 Difference]: With dead ends: 38 [2020-12-23 16:59:09,720 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 16:59:09,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:59:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 16:59:09,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-23 16:59:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 16:59:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-12-23 16:59:09,728 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 6 [2020-12-23 16:59:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:09,729 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-12-23 16:59:09,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:59:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-12-23 16:59:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:59:09,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:09,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:09,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 16:59:09,730 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:09,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1835232166, now seen corresponding path program 1 times [2020-12-23 16:59:09,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:09,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872230510] [2020-12-23 16:59:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:09,774 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 16:59:09,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872230510] [2020-12-23 16:59:09,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:09,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:59:09,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555790613] [2020-12-23 16:59:09,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:59:09,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:09,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:59:09,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:59:09,776 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 3 states. [2020-12-23 16:59:09,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:09,814 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-12-23 16:59:09,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:59:09,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-23 16:59:09,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:09,815 INFO L225 Difference]: With dead ends: 34 [2020-12-23 16:59:09,815 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 16:59:09,816 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 16:59:09,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 16:59:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-23 16:59:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 16:59:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-12-23 16:59:09,820 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 9 [2020-12-23 16:59:09,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:09,820 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-12-23 16:59:09,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:59:09,820 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-12-23 16:59:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:59:09,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:09,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:09,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 16:59:09,822 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:09,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1835232167, now seen corresponding path program 1 times [2020-12-23 16:59:09,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:09,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111150978] [2020-12-23 16:59:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:09,870 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 16:59:09,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111150978] [2020-12-23 16:59:09,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:09,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:59:09,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112153690] [2020-12-23 16:59:09,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:59:09,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:09,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:59:09,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:59:09,873 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 3 states. [2020-12-23 16:59:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:09,902 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-12-23 16:59:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:59:09,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-23 16:59:09,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:09,904 INFO L225 Difference]: With dead ends: 30 [2020-12-23 16:59:09,904 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 16:59:09,904 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 16:59:09,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 16:59:09,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-23 16:59:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 16:59:09,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-12-23 16:59:09,908 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 9 [2020-12-23 16:59:09,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:09,908 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-12-23 16:59:09,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:59:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-12-23 16:59:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 16:59:09,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:09,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:09,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 16:59:09,910 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:09,911 INFO L82 PathProgramCache]: Analyzing trace with hash -528418345, now seen corresponding path program 1 times [2020-12-23 16:59:09,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:09,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674784375] [2020-12-23 16:59:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:10,047 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 16:59:10,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674784375] [2020-12-23 16:59:10,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:10,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 16:59:10,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519077077] [2020-12-23 16:59:10,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 16:59:10,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:10,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 16:59:10,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:59:10,050 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 10 states. [2020-12-23 16:59:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:10,309 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-12-23 16:59:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 16:59:10,310 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-23 16:59:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:10,311 INFO L225 Difference]: With dead ends: 29 [2020-12-23 16:59:10,311 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 16:59:10,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:59:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 16:59:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 16:59:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 16:59:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-23 16:59:10,317 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 16 [2020-12-23 16:59:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:10,317 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-23 16:59:10,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 16:59:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-23 16:59:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 16:59:10,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:10,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:10,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 16:59:10,322 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:10,323 INFO L82 PathProgramCache]: Analyzing trace with hash 798899022, now seen corresponding path program 1 times [2020-12-23 16:59:10,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:10,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014235378] [2020-12-23 16:59:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:10,580 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 16:59:10,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014235378] [2020-12-23 16:59:10,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:10,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-23 16:59:10,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739376021] [2020-12-23 16:59:10,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 16:59:10,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:10,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 16:59:10,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-12-23 16:59:10,583 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2020-12-23 16:59:11,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:11,129 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2020-12-23 16:59:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 16:59:11,130 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 17 [2020-12-23 16:59:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:11,131 INFO L225 Difference]: With dead ends: 29 [2020-12-23 16:59:11,131 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 16:59:11,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2020-12-23 16:59:11,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 16:59:11,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 16:59:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 16:59:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2020-12-23 16:59:11,135 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 17 [2020-12-23 16:59:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:11,136 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2020-12-23 16:59:11,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 16:59:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2020-12-23 16:59:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 16:59:11,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:11,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:11,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 16:59:11,137 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:11,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:11,138 INFO L82 PathProgramCache]: Analyzing trace with hash 798900559, now seen corresponding path program 1 times [2020-12-23 16:59:11,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:11,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744585228] [2020-12-23 16:59:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:11,301 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 16:59:11,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744585228] [2020-12-23 16:59:11,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:11,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 16:59:11,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713578716] [2020-12-23 16:59:11,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 16:59:11,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:11,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 16:59:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:59:11,307 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand 10 states. [2020-12-23 16:59:11,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:11,622 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-12-23 16:59:11,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 16:59:11,622 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-23 16:59:11,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:11,623 INFO L225 Difference]: With dead ends: 28 [2020-12-23 16:59:11,623 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 16:59:11,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:59:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 16:59:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-23 16:59:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 16:59:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-12-23 16:59:11,627 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 17 [2020-12-23 16:59:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:11,627 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-12-23 16:59:11,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 16:59:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-12-23 16:59:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 16:59:11,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:11,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:11,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 16:59:11,629 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:11,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:11,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1003886375, now seen corresponding path program 1 times [2020-12-23 16:59:11,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:11,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656363168] [2020-12-23 16:59:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:11,786 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 16:59:11,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656363168] [2020-12-23 16:59:11,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:11,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 16:59:11,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541941021] [2020-12-23 16:59:11,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 16:59:11,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 16:59:11,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:59:11,789 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 10 states. [2020-12-23 16:59:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:12,104 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-12-23 16:59:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:59:12,104 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-12-23 16:59:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:12,105 INFO L225 Difference]: With dead ends: 27 [2020-12-23 16:59:12,105 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 16:59:12,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-12-23 16:59:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 16:59:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-23 16:59:12,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 16:59:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-12-23 16:59:12,110 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 18 [2020-12-23 16:59:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:12,111 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-12-23 16:59:12,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 16:59:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-12-23 16:59:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 16:59:12,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:12,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:12,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 16:59:12,112 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:12,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1055706479, now seen corresponding path program 1 times [2020-12-23 16:59:12,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:12,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133311100] [2020-12-23 16:59:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:12,253 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 16:59:12,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133311100] [2020-12-23 16:59:12,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:12,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 16:59:12,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841103231] [2020-12-23 16:59:12,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 16:59:12,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:12,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 16:59:12,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:59:12,256 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand 10 states. [2020-12-23 16:59:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:12,494 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-12-23 16:59:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 16:59:12,494 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-12-23 16:59:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:12,495 INFO L225 Difference]: With dead ends: 26 [2020-12-23 16:59:12,495 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 16:59:12,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:59:12,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 16:59:12,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-23 16:59:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 16:59:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2020-12-23 16:59:12,498 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 19 [2020-12-23 16:59:12,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:12,498 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2020-12-23 16:59:12,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 16:59:12,499 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2020-12-23 16:59:12,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 16:59:12,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:12,501 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] [2020-12-23 16:59:12,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 16:59:12,501 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:12,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1632837595, now seen corresponding path program 1 times [2020-12-23 16:59:12,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:12,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459386275] [2020-12-23 16:59:12,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:12,652 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 16:59:12,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459386275] [2020-12-23 16:59:12,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:12,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 16:59:12,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129641130] [2020-12-23 16:59:12,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 16:59:12,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:12,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 16:59:12,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:59:12,656 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 10 states. [2020-12-23 16:59:12,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:12,966 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-12-23 16:59:12,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 16:59:12,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-23 16:59:12,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:12,967 INFO L225 Difference]: With dead ends: 25 [2020-12-23 16:59:12,967 INFO L226 Difference]: Without dead ends: 25 [2020-12-23 16:59:12,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:59:12,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-23 16:59:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-23 16:59:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 16:59:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-12-23 16:59:12,970 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 20 [2020-12-23 16:59:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:12,971 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-12-23 16:59:12,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 16:59:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-12-23 16:59:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 16:59:12,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:12,972 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] [2020-12-23 16:59:12,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 16:59:12,972 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash -921642029, now seen corresponding path program 1 times [2020-12-23 16:59:12,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:12,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906830691] [2020-12-23 16:59:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:13,240 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 16:59:13,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906830691] [2020-12-23 16:59:13,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:13,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-23 16:59:13,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464789168] [2020-12-23 16:59:13,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 16:59:13,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:13,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 16:59:13,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-12-23 16:59:13,243 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 16 states. [2020-12-23 16:59:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:14,072 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-12-23 16:59:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 16:59:14,072 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-12-23 16:59:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:14,073 INFO L225 Difference]: With dead ends: 24 [2020-12-23 16:59:14,073 INFO L226 Difference]: Without dead ends: 24 [2020-12-23 16:59:14,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2020-12-23 16:59:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-23 16:59:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-23 16:59:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 16:59:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2020-12-23 16:59:14,079 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 21 [2020-12-23 16:59:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:14,079 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2020-12-23 16:59:14,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 16:59:14,079 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2020-12-23 16:59:14,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 16:59:14,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:14,081 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] [2020-12-23 16:59:14,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 16:59:14,082 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:59:14,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:14,082 INFO L82 PathProgramCache]: Analyzing trace with hash -934724330, now seen corresponding path program 1 times [2020-12-23 16:59:14,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:14,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266969672] [2020-12-23 16:59:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:15,880 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 16:59:15,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266969672] [2020-12-23 16:59:15,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:15,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-23 16:59:15,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143819671] [2020-12-23 16:59:15,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-23 16:59:15,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:15,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-23 16:59:15,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-12-23 16:59:15,883 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand 20 states. [2020-12-23 16:59:16,426 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-12-23 16:59:16,669 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-23 16:59:17,004 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-23 16:59:17,243 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-12-23 16:59:17,480 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-12-23 16:59:17,759 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-12-23 16:59:18,064 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-12-23 16:59:18,438 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-12-23 16:59:18,878 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2020-12-23 16:59:19,284 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2020-12-23 16:59:19,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:19,379 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-12-23 16:59:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 16:59:19,379 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-12-23 16:59:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:19,379 INFO L225 Difference]: With dead ends: 23 [2020-12-23 16:59:19,379 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 16:59:19,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 16:59:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 16:59:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 16:59:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 16:59:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 16:59:19,382 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-12-23 16:59:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:19,382 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 16:59:19,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-23 16:59:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 16:59:19,382 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 16:59:19,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 16:59:19,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 04:59:19 BoogieIcfgContainer [2020-12-23 16:59:19,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 16:59:19,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 16:59:19,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 16:59:19,390 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 16:59:19,390 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 16:59:19,404 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 16:59:19,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-12-23 16:59:19,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-23 16:59:19,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-23 16:59:19,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 16:59:19,496 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety/test-0019-1.i-witness.graphml [2020-12-23 16:59:19,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 16:59:19,497 INFO L168 Benchmark]: Toolchain (without parser) took 12410.46 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 125.0 MB in the beginning and 241.6 MB in the end (delta: -116.6 MB). Peak memory consumption was 145.1 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:19,500 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 16:59:19,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.48 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 103.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:19,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.04 ms. Allocated memory is still 151.0 MB. Free memory was 103.2 MB in the beginning and 101.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:19,502 INFO L168 Benchmark]: Boogie Preprocessor took 56.33 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 100.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:19,502 INFO L168 Benchmark]: RCFGBuilder took 549.80 ms. Allocated memory is still 151.0 MB. Free memory was 100.0 MB in the beginning and 112.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:19,503 INFO L168 Benchmark]: TraceAbstraction took 11081.54 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 111.9 MB in the beginning and 92.2 MB in the end (delta: 19.7 MB). Peak memory consumption was 131.9 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:19,508 INFO L168 Benchmark]: Witness Printer took 106.94 ms. Allocated memory is still 262.1 MB. Free memory was 92.2 MB in the beginning and 241.6 MB in the end (delta: -149.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:19,512 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 513.48 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 103.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 94.04 ms. Allocated memory is still 151.0 MB. Free memory was 103.2 MB in the beginning and 101.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.33 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 100.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 549.80 ms. Allocated memory is still 151.0 MB. Free memory was 100.0 MB in the beginning and 112.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11081.54 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 111.9 MB in the beginning and 92.2 MB in the end (delta: 19.7 MB). Peak memory consumption was 131.9 MB. Max. memory is 8.0 GB. * Witness Printer took 106.94 ms. Allocated memory is still 262.1 MB. Free memory was 92.2 MB in the beginning and 241.6 MB in the end (delta: -149.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference 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: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference 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: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 539]: 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: 535]: 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: 534]: 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: 538]: 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: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 539]: 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: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: 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: 541]: 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, 48 locations, 23 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.9s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 241 SDtfs, 750 SDslu, 281 SDs, 0 SdLazy, 1348 SolverSat, 209 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 18 SyntacticMatches, 6 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 15 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 40685 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 proved your program to be correct! Received shutdown request...