/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-ext3/realloc1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:43:25,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:43:25,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:43:25,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:43:25,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:43:25,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:43:25,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:43:25,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:43:25,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:43:25,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:43:25,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:43:25,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:43:25,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:43:25,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:43:25,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:43:25,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:43:25,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:43:25,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:43:25,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:43:25,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:43:25,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:43:25,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:43:25,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:43:25,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:43:25,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:43:25,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:43:25,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:43:25,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:43:25,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:43:25,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:43:25,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:43:25,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:43:25,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:43:25,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:43:25,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:43:25,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:43:25,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:43:25,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:43:25,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:43:25,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:43:25,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:43:25,529 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:43:25,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:43:25,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:43:25,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:43:25,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:43:25,530 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:43:25,530 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:43:25,531 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:43:25,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:43:25,531 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:43:25,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:43:25,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:43:25,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:43:25,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:43:25,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:43:25,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:43:25,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:43:25,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:43:25,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:43:25,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:43:25,534 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:43:26,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:43:26,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:43:26,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:43:26,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:43:26,104 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:43:26,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/realloc1.c [2020-12-22 19:43:26,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2e9b988/3ae8c16aca424f568f2d69c05d85bf77/FLAGf6ac5ce41 [2020-12-22 19:43:27,162 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:43:27,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/realloc1.c [2020-12-22 19:43:27,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2e9b988/3ae8c16aca424f568f2d69c05d85bf77/FLAGf6ac5ce41 [2020-12-22 19:43:27,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2e9b988/3ae8c16aca424f568f2d69c05d85bf77 [2020-12-22 19:43:27,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:43:27,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:43:27,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:43:27,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:43:27,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:43:27,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:27,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eda7d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27, skipping insertion in model container [2020-12-22 19:43:27,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:27,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:43:27,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:43:27,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:43:27,877 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:43:27,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:43:27,936 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:43:27,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27 WrapperNode [2020-12-22 19:43:27,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:43:27,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:43:27,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:43:27,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:43:27,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:27,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:27,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:43:27,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:43:27,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:43:27,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:43:28,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:28,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:28,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:28,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:28,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:28,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:28,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (1/1) ... [2020-12-22 19:43:28,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:43:28,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:43:28,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:43:28,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:43:28,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 19:43:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:43:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:43:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:43:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:43:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:43:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:43:28,744 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:43:28,744 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 19:43:28,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:28 BoogieIcfgContainer [2020-12-22 19:43:28,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:43:28,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:43:28,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:43:28,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:43:28,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:43:27" (1/3) ... [2020-12-22 19:43:28,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6457a404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:43:28, skipping insertion in model container [2020-12-22 19:43:28,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:27" (2/3) ... [2020-12-22 19:43:28,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6457a404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:43:28, skipping insertion in model container [2020-12-22 19:43:28,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:28" (3/3) ... [2020-12-22 19:43:28,759 INFO L111 eAbstractionObserver]: Analyzing ICFG realloc1.c [2020-12-22 19:43:28,791 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:43:28,797 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 19:43:28,859 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 19:43:28,911 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:43:28,911 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:43:28,912 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:43:28,912 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:43:28,913 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:43:28,913 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:43:28,913 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:43:28,913 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:43:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-22 19:43:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:43:28,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:28,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:43:28,953 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:28,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:28,962 INFO L82 PathProgramCache]: Analyzing trace with hash 926021, now seen corresponding path program 1 times [2020-12-22 19:43:28,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:28,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804823237] [2020-12-22 19:43:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:29,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804823237] [2020-12-22 19:43:29,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:29,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:43:29,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306276517] [2020-12-22 19:43:29,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:43:29,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:29,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:43:29,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:43:29,234 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-12-22 19:43:29,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:29,252 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-22 19:43:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:43:29,254 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-12-22 19:43:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:29,266 INFO L225 Difference]: With dead ends: 25 [2020-12-22 19:43:29,266 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 19:43:29,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:43:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 19:43:29,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 19:43:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 19:43:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-22 19:43:29,313 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 4 [2020-12-22 19:43:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:29,313 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-22 19:43:29,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:43:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-22 19:43:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:43:29,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:29,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:43:29,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:43:29,315 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:29,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:29,317 INFO L82 PathProgramCache]: Analyzing trace with hash 925711, now seen corresponding path program 1 times [2020-12-22 19:43:29,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:29,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112881520] [2020-12-22 19:43:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:29,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112881520] [2020-12-22 19:43:29,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:29,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:43:29,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460122871] [2020-12-22 19:43:29,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:29,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:29,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:29,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:29,410 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2020-12-22 19:43:29,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:29,440 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-12-22 19:43:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:29,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:43:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:29,442 INFO L225 Difference]: With dead ends: 29 [2020-12-22 19:43:29,442 INFO L226 Difference]: Without dead ends: 29 [2020-12-22 19:43:29,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:29,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-22 19:43:29,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-12-22 19:43:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 19:43:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-12-22 19:43:29,451 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 4 [2020-12-22 19:43:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:29,452 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-12-22 19:43:29,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-12-22 19:43:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:43:29,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:29,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:43:29,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:43:29,454 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:29,455 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-12-22 19:43:29,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:29,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133756386] [2020-12-22 19:43:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:29,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133756386] [2020-12-22 19:43:29,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:29,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:43:29,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850029847] [2020-12-22 19:43:29,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:29,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:29,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:29,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:29,493 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 3 states. [2020-12-22 19:43:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:29,539 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-12-22 19:43:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:29,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:43:29,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:29,541 INFO L225 Difference]: With dead ends: 26 [2020-12-22 19:43:29,541 INFO L226 Difference]: Without dead ends: 26 [2020-12-22 19:43:29,542 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 [2020-12-22 19:43:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-22 19:43:29,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-12-22 19:43:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 19:43:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-22 19:43:29,547 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 4 [2020-12-22 19:43:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:29,548 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-22 19:43:29,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-22 19:43:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:43:29,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:29,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:43:29,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:43:29,550 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:29,550 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2020-12-22 19:43:29,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:29,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331192857] [2020-12-22 19:43:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:29,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331192857] [2020-12-22 19:43:29,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:29,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:43:29,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208849804] [2020-12-22 19:43:29,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:29,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:29,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:29,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:29,611 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2020-12-22 19:43:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:29,665 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-22 19:43:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:29,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:43:29,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:29,667 INFO L225 Difference]: With dead ends: 25 [2020-12-22 19:43:29,667 INFO L226 Difference]: Without dead ends: 25 [2020-12-22 19:43:29,668 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 [2020-12-22 19:43:29,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-22 19:43:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-12-22 19:43:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 19:43:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-22 19:43:29,673 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 4 [2020-12-22 19:43:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:29,673 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-22 19:43:29,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-22 19:43:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:43:29,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:29,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:29,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:43:29,676 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:29,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:29,677 INFO L82 PathProgramCache]: Analyzing trace with hash 264435858, now seen corresponding path program 1 times [2020-12-22 19:43:29,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:29,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651558851] [2020-12-22 19:43:29,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:43:29,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651558851] [2020-12-22 19:43:29,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:29,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:43:29,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836897964] [2020-12-22 19:43:29,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:29,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:29,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:29,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:29,728 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2020-12-22 19:43:29,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:29,755 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-12-22 19:43:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:29,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-22 19:43:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:29,761 INFO L225 Difference]: With dead ends: 25 [2020-12-22 19:43:29,761 INFO L226 Difference]: Without dead ends: 25 [2020-12-22 19:43:29,762 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 [2020-12-22 19:43:29,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-22 19:43:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-12-22 19:43:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 19:43:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-22 19:43:29,778 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2020-12-22 19:43:29,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:29,778 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-22 19:43:29,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:29,778 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-22 19:43:29,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:43:29,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:29,779 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:29,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:43:29,780 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:29,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:29,782 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2020-12-22 19:43:29,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:29,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309571691] [2020-12-22 19:43:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:29,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309571691] [2020-12-22 19:43:29,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41234430] [2020-12-22 19:43:29,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:30,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 19:43:30,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:30,245 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:43:30,247 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:30,257 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:30,259 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:43:30,259 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 19:43:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:30,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:30,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2020-12-22 19:43:30,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678517681] [2020-12-22 19:43:30,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:43:30,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:30,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:43:30,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:43:30,308 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-12-22 19:43:30,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:30,394 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-12-22 19:43:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:43:30,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-22 19:43:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:30,396 INFO L225 Difference]: With dead ends: 30 [2020-12-22 19:43:30,396 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 19:43:30,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:43:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 19:43:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-12-22 19:43:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 19:43:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-12-22 19:43:30,401 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 8 [2020-12-22 19:43:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:30,401 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-12-22 19:43:30,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:43:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-12-22 19:43:30,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:43:30,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:30,403 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-12-22 19:43:30,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 19:43:30,618 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:30,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:30,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1401693725, now seen corresponding path program 1 times [2020-12-22 19:43:30,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:30,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66528072] [2020-12-22 19:43:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:30,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66528072] [2020-12-22 19:43:30,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595318926] [2020-12-22 19:43:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:30,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:43:30,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:30,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:30,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 19:43:30,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352998932] [2020-12-22 19:43:30,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:43:30,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:30,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:43:30,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:30,801 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2020-12-22 19:43:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:30,855 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-22 19:43:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:43:30,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-12-22 19:43:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:30,860 INFO L225 Difference]: With dead ends: 34 [2020-12-22 19:43:30,860 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 19:43:30,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 19:43:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-12-22 19:43:30,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 19:43:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-22 19:43:30,871 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2020-12-22 19:43:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:30,873 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-22 19:43:30,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:43:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-22 19:43:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:43:30,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:30,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-12-22 19:43:31,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:31,091 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:31,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:31,092 INFO L82 PathProgramCache]: Analyzing trace with hash 519338618, now seen corresponding path program 2 times [2020-12-22 19:43:31,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:31,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119197979] [2020-12-22 19:43:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:31,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119197979] [2020-12-22 19:43:31,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540508178] [2020-12-22 19:43:31,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:31,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:43:31,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:31,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 19:43:31,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:43:31,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:31,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2020-12-22 19:43:31,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400295512] [2020-12-22 19:43:31,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:31,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:31,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:31,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:31,401 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 3 states. [2020-12-22 19:43:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:31,432 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-12-22 19:43:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:31,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:43:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:31,435 INFO L225 Difference]: With dead ends: 33 [2020-12-22 19:43:31,436 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 19:43:31,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 19:43:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-12-22 19:43:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 19:43:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-22 19:43:31,448 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2020-12-22 19:43:31,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:31,449 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-22 19:43:31,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:31,450 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-22 19:43:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:43:31,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:31,451 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:31,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:31,659 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:31,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:31,660 INFO L82 PathProgramCache]: Analyzing trace with hash 868207325, now seen corresponding path program 1 times [2020-12-22 19:43:31,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:31,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647271128] [2020-12-22 19:43:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:31,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647271128] [2020-12-22 19:43:31,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177710563] [2020-12-22 19:43:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:31,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:43:31,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:31,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:31,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 19:43:31,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682960713] [2020-12-22 19:43:31,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:43:31,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:31,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:43:31,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:31,866 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2020-12-22 19:43:31,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:31,909 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-12-22 19:43:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:43:31,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-22 19:43:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:31,911 INFO L225 Difference]: With dead ends: 37 [2020-12-22 19:43:31,911 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 19:43:31,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 19:43:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-12-22 19:43:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 19:43:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-12-22 19:43:31,916 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2020-12-22 19:43:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:31,916 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-12-22 19:43:31,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:43:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-12-22 19:43:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:43:31,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:31,918 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:32,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:32,133 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:32,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:32,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1807964806, now seen corresponding path program 2 times [2020-12-22 19:43:32,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:32,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580155087] [2020-12-22 19:43:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:32,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580155087] [2020-12-22 19:43:32,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113065510] [2020-12-22 19:43:32,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:32,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:43:32,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:32,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:43:32,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:32,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:32,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 19:43:32,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053536093] [2020-12-22 19:43:32,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:43:32,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:32,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:43:32,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:32,362 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 9 states. [2020-12-22 19:43:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:32,408 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-12-22 19:43:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:43:32,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-22 19:43:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:32,410 INFO L225 Difference]: With dead ends: 41 [2020-12-22 19:43:32,410 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 19:43:32,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 19:43:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-12-22 19:43:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-22 19:43:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-12-22 19:43:32,414 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 27 [2020-12-22 19:43:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:32,415 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-12-22 19:43:32,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:43:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-12-22 19:43:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:43:32,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:32,416 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:32,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 19:43:32,632 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:32,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1600186775, now seen corresponding path program 3 times [2020-12-22 19:43:32,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:32,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821802572] [2020-12-22 19:43:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:32,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821802572] [2020-12-22 19:43:32,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974505660] [2020-12-22 19:43:32,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:32,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-22 19:43:32,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:32,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:43:32,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:32,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:32,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-22 19:43:32,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963962981] [2020-12-22 19:43:32,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:43:32,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:32,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:43:32,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:32,860 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 10 states. [2020-12-22 19:43:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:32,907 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-12-22 19:43:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:43:32,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-22 19:43:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:32,908 INFO L225 Difference]: With dead ends: 45 [2020-12-22 19:43:32,908 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 19:43:32,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 19:43:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-12-22 19:43:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 19:43:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-12-22 19:43:32,913 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 31 [2020-12-22 19:43:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:32,913 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-12-22 19:43:32,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:43:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-12-22 19:43:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:43:32,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:32,915 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:33,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:33,131 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:33,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:33,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1201940684, now seen corresponding path program 4 times [2020-12-22 19:43:33,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:33,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200044777] [2020-12-22 19:43:33,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:33,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200044777] [2020-12-22 19:43:33,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435917751] [2020-12-22 19:43:33,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:33,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:43:33,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:33,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:43:33,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:33,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:33,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-22 19:43:33,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747066388] [2020-12-22 19:43:33,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:43:33,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:33,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:43:33,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:33,454 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 11 states. [2020-12-22 19:43:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:33,535 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-12-22 19:43:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:43:33,535 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-12-22 19:43:33,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:33,536 INFO L225 Difference]: With dead ends: 49 [2020-12-22 19:43:33,536 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 19:43:33,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:33,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 19:43:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-12-22 19:43:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:43:33,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-22 19:43:33,544 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 35 [2020-12-22 19:43:33,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:33,544 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-22 19:43:33,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:43:33,544 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-22 19:43:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 19:43:33,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:33,551 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:33,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:33,755 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:33,756 INFO L82 PathProgramCache]: Analyzing trace with hash 415018577, now seen corresponding path program 5 times [2020-12-22 19:43:33,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:33,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134564839] [2020-12-22 19:43:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:33,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134564839] [2020-12-22 19:43:33,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350016038] [2020-12-22 19:43:33,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:33,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-22 19:43:33,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:33,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:43:33,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:34,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:34,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-22 19:43:34,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184814238] [2020-12-22 19:43:34,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:43:34,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:34,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:43:34,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:43:34,022 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 12 states. [2020-12-22 19:43:34,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:34,076 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-12-22 19:43:34,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:43:34,077 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-12-22 19:43:34,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:34,077 INFO L225 Difference]: With dead ends: 53 [2020-12-22 19:43:34,077 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 19:43:34,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:43:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 19:43:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-12-22 19:43:34,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:43:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-12-22 19:43:34,081 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 39 [2020-12-22 19:43:34,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:34,082 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-12-22 19:43:34,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:43:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-12-22 19:43:34,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 19:43:34,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:34,083 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:34,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 19:43:34,299 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:34,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:34,300 INFO L82 PathProgramCache]: Analyzing trace with hash 544386798, now seen corresponding path program 6 times [2020-12-22 19:43:34,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:34,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276709088] [2020-12-22 19:43:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:34,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276709088] [2020-12-22 19:43:34,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745430620] [2020-12-22 19:43:34,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:34,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-22 19:43:34,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:34,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:43:34,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:34,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:34,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-22 19:43:34,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083691766] [2020-12-22 19:43:34,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:43:34,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:34,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:43:34,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:43:34,689 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 13 states. [2020-12-22 19:43:34,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:34,776 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-12-22 19:43:34,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:43:34,776 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-12-22 19:43:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:34,777 INFO L225 Difference]: With dead ends: 54 [2020-12-22 19:43:34,777 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 19:43:34,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:43:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 19:43:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-22 19:43:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 19:43:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-12-22 19:43:34,781 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 43 [2020-12-22 19:43:34,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:34,782 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-12-22 19:43:34,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:43:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-12-22 19:43:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 19:43:34,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:34,783 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:34,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:34,997 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:43:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:34,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1707940107, now seen corresponding path program 7 times [2020-12-22 19:43:34,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:34,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617996982] [2020-12-22 19:43:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:43:35,031 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:43:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:43:35,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:43:35,083 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 19:43:35,083 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 19:43:35,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:43:35,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:43:35 BoogieIcfgContainer [2020-12-22 19:43:35,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:43:35,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:43:35,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:43:35,126 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:43:35,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:28" (3/4) ... [2020-12-22 19:43:35,132 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 19:43:35,235 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety-ext3/realloc1.c-witness.graphml [2020-12-22 19:43:35,235 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:43:35,237 INFO L168 Benchmark]: Toolchain (without parser) took 7743.11 ms. Allocated memory was 166.7 MB in the beginning and 212.9 MB in the end (delta: 46.1 MB). Free memory was 141.6 MB in the beginning and 177.4 MB in the end (delta: -35.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:35,237 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 166.7 MB. Free memory is still 141.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:43:35,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.30 ms. Allocated memory is still 166.7 MB. Free memory was 141.4 MB in the beginning and 132.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:35,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.90 ms. Allocated memory is still 166.7 MB. Free memory was 132.3 MB in the beginning and 131.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:35,239 INFO L168 Benchmark]: Boogie Preprocessor took 39.94 ms. Allocated memory is still 166.7 MB. Free memory was 131.0 MB in the beginning and 129.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:35,243 INFO L168 Benchmark]: RCFGBuilder took 710.70 ms. Allocated memory is still 166.7 MB. Free memory was 129.9 MB in the beginning and 115.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:35,243 INFO L168 Benchmark]: TraceAbstraction took 6375.06 ms. Allocated memory was 166.7 MB in the beginning and 212.9 MB in the end (delta: 46.1 MB). Free memory was 115.4 MB in the beginning and 180.5 MB in the end (delta: -65.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:43:35,244 INFO L168 Benchmark]: Witness Printer took 109.47 ms. Allocated memory is still 212.9 MB. Free memory was 180.5 MB in the beginning and 177.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:35,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 166.7 MB. Free memory is still 141.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 441.30 ms. Allocated memory is still 166.7 MB. Free memory was 141.4 MB in the beginning and 132.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.90 ms. Allocated memory is still 166.7 MB. Free memory was 132.3 MB in the beginning and 131.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.94 ms. Allocated memory is still 166.7 MB. Free memory was 131.0 MB in the beginning and 129.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 710.70 ms. Allocated memory is still 166.7 MB. Free memory was 129.9 MB in the beginning and 115.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6375.06 ms. Allocated memory was 166.7 MB in the beginning and 212.9 MB in the end (delta: 46.1 MB). Free memory was 115.4 MB in the beginning and 180.5 MB in the end (delta: -65.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 109.47 ms. Allocated memory is still 212.9 MB. Free memory was 180.5 MB in the beginning and 177.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L8] char* p = malloc(10 * sizeof(int)); [L10] int i = 0; [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND FALSE !(i < 10) [L14] free(p) [L14] free(p) [L14] free(p) [L16] p[2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.1s, OverallIterations: 15, TraceHistogramMax: 10, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 230 SDtfs, 215 SDslu, 722 SDs, 0 SdLazy, 334 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 38 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 559 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 489 ConstructedInterpolants, 0 QuantifiedInterpolants, 39596 SizeOfPredicates, 3 NumberOfNonLiveVariables, 734 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 29/1097 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 incorrect! Received shutdown request...