/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/getNumbers1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:43:11,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:43:11,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:43:11,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:43:11,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:43:11,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:43:11,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:43:11,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:43:11,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:43:11,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:43:11,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:43:11,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:43:11,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:43:11,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:43:11,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:43:11,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:43:11,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:43:11,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:43:11,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:43:11,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:43:11,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:43:11,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:43:11,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:43:11,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:43:11,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:43:11,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:43:11,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:43:11,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:43:11,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:43:11,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:43:11,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:43:11,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:43:11,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:43:11,535 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:43:11,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:43:11,535 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:43:11,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:43:11,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:43:11,536 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:43:11,536 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:43:11,536 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:43:11,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:43:11,537 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:43:11,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:43:11,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:43:11,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:43:11,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:43:11,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:43:11,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:43:11,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:43:11,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:43:11,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:43:11,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:43:11,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:43:11,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:43:11,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:43:11,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:43:11,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:43:11,986 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:43:11,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c [2020-12-22 19:43:12,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6570566c2/ccae95421bb74a3eb35043c99a5c567e/FLAG926ce7448 [2020-12-22 19:43:12,811 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:43:12,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c [2020-12-22 19:43:12,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6570566c2/ccae95421bb74a3eb35043c99a5c567e/FLAG926ce7448 [2020-12-22 19:43:13,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6570566c2/ccae95421bb74a3eb35043c99a5c567e [2020-12-22 19:43:13,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:43:13,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:43:13,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:43:13,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:43:13,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:43:13,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec297d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13, skipping insertion in model container [2020-12-22 19:43:13,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:43:13,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:43:13,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:43:13,519 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:43:13,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:43:13,565 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:43:13,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13 WrapperNode [2020-12-22 19:43:13,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:43:13,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:43:13,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:43:13,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:43:13,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:43:13,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:43:13,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:43:13,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:43:13,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (1/1) ... [2020-12-22 19:43:13,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:43:13,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:43:13,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:43:13,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:43:13,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (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 19:43:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:43:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:43:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:43:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:43:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:43:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:43:14,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:43:14,337 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 19:43:14,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:14 BoogieIcfgContainer [2020-12-22 19:43:14,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:43:14,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:43:14,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:43:14,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:43:14,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:43:13" (1/3) ... [2020-12-22 19:43:14,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1559ad86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:43:14, skipping insertion in model container [2020-12-22 19:43:14,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:13" (2/3) ... [2020-12-22 19:43:14,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1559ad86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:43:14, skipping insertion in model container [2020-12-22 19:43:14,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:14" (3/3) ... [2020-12-22 19:43:14,393 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers1-2.c [2020-12-22 19:43:14,412 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:43:14,426 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 19:43:14,475 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 19:43:14,518 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:43:14,518 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:43:14,518 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:43:14,519 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:43:14,519 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:43:14,519 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:43:14,521 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:43:14,521 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:43:14,548 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-22 19:43:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:43:14,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:14,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:43:14,564 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:14,576 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-12-22 19:43:14,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:14,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413278429] [2020-12-22 19:43:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:14,896 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 19:43:14,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413278429] [2020-12-22 19:43:14,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:14,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 19:43:14,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270312613] [2020-12-22 19:43:14,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:14,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:14,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:14,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:14,938 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-12-22 19:43:15,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:15,018 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-22 19:43:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:15,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:43:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:15,033 INFO L225 Difference]: With dead ends: 19 [2020-12-22 19:43:15,034 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 19:43:15,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 19:43:15,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 19:43:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-22 19:43:15,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 19:43:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-22 19:43:15,077 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2020-12-22 19:43:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:15,078 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-22 19:43:15,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-22 19:43:15,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:43:15,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:15,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:43:15,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:43:15,080 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:15,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:15,081 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2020-12-22 19:43:15,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:15,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587287714] [2020-12-22 19:43:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:15,199 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 19:43:15,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587287714] [2020-12-22 19:43:15,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:15,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:43:15,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586849241] [2020-12-22 19:43:15,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:43:15,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:15,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:43:15,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:43:15,206 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2020-12-22 19:43:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:15,255 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-12-22 19:43:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:43:15,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-22 19:43:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:15,256 INFO L225 Difference]: With dead ends: 20 [2020-12-22 19:43:15,256 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 19:43:15,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:43:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 19:43:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-22 19:43:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 19:43:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-22 19:43:15,262 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2020-12-22 19:43:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:15,263 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-22 19:43:15,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:43:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-22 19:43:15,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:43:15,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:15,264 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-12-22 19:43:15,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:43:15,265 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2020-12-22 19:43:15,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:15,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585236950] [2020-12-22 19:43:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:15,376 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 19:43:15,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585236950] [2020-12-22 19:43:15,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948752192] [2020-12-22 19:43:15,377 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 19:43:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:15,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:43:15,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:15,563 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:15,564 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:43:15,577 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:15,648 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:43:15,660 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:43:15,661 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-12-22 19:43:15,715 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 19:43:15,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:15,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2020-12-22 19:43:15,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248859134] [2020-12-22 19:43:15,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:43:15,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:15,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:43:15,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:15,719 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 7 states. [2020-12-22 19:43:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:15,921 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-22 19:43:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:43:15,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-12-22 19:43:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:15,925 INFO L225 Difference]: With dead ends: 23 [2020-12-22 19:43:15,926 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 19:43:15,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 19:43:15,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 19:43:15,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 19:43:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-22 19:43:15,935 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2020-12-22 19:43:15,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:15,935 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-22 19:43:15,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:43:15,936 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-22 19:43:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:43:15,941 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:15,942 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:16,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 19:43:16,144 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:16,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:16,145 INFO L82 PathProgramCache]: Analyzing trace with hash -118451422, now seen corresponding path program 1 times [2020-12-22 19:43:16,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:16,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788223173] [2020-12-22 19:43:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:16,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788223173] [2020-12-22 19:43:16,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657000043] [2020-12-22 19:43:16,264 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 19:43:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:16,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:43:16,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:16,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:16,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 19:43:16,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400211433] [2020-12-22 19:43:16,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:43:16,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:16,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:43:16,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:16,450 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-12-22 19:43:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:16,493 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-12-22 19:43:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:43:16,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 19:43:16,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:16,495 INFO L225 Difference]: With dead ends: 28 [2020-12-22 19:43:16,495 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 19:43:16,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 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 19:43:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 19:43:16,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-12-22 19:43:16,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 19:43:16,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-12-22 19:43:16,501 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2020-12-22 19:43:16,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:16,501 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-12-22 19:43:16,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:43:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-12-22 19:43:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:43:16,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:16,503 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:16,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:16,719 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:16,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 2 times [2020-12-22 19:43:16,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:16,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741392908] [2020-12-22 19:43:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:16,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741392908] [2020-12-22 19:43:16,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584240633] [2020-12-22 19:43:16,836 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 19:43:16,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:43:16,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:16,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 19:43:16,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:16,904 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:16,905 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:43:16,908 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:16,931 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:43:16,934 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:43:16,935 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-12-22 19:43:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 19:43:17,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:17,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2020-12-22 19:43:17,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198577197] [2020-12-22 19:43:17,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:43:17,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:17,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:43:17,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:17,033 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 5 states. [2020-12-22 19:43:17,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:17,113 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-12-22 19:43:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:43:17,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-22 19:43:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:17,115 INFO L225 Difference]: With dead ends: 31 [2020-12-22 19:43:17,115 INFO L226 Difference]: Without dead ends: 31 [2020-12-22 19:43:17,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:43:17,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-22 19:43:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-12-22 19:43:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 19:43:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-12-22 19:43:17,121 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2020-12-22 19:43:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:17,121 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-12-22 19:43:17,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:43:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-12-22 19:43:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:43:17,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:17,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:17,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:17,338 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:17,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:17,340 INFO L82 PathProgramCache]: Analyzing trace with hash -2129139287, now seen corresponding path program 1 times [2020-12-22 19:43:17,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:17,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670890378] [2020-12-22 19:43:17,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:43:17,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670890378] [2020-12-22 19:43:17,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:17,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:43:17,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839792406] [2020-12-22 19:43:17,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:43:17,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:17,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:43:17,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:43:17,461 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2020-12-22 19:43:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:17,506 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-12-22 19:43:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:43:17,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-22 19:43:17,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:17,507 INFO L225 Difference]: With dead ends: 27 [2020-12-22 19:43:17,507 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 19:43:17,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 19:43:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-22 19:43:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 19:43:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-22 19:43:17,513 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-12-22 19:43:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:17,513 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-22 19:43:17,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:43:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-22 19:43:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:43:17,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:17,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:17,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:43:17,515 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:17,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:17,516 INFO L82 PathProgramCache]: Analyzing trace with hash -95789843, now seen corresponding path program 1 times [2020-12-22 19:43:17,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:17,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118389927] [2020-12-22 19:43:17,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:43:17,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118389927] [2020-12-22 19:43:17,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553386822] [2020-12-22 19:43:17,623 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 19:43:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:17,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:43:17,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:43:17,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:17,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 19:43:17,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420337756] [2020-12-22 19:43:17,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:43:17,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:17,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:43:17,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:17,746 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 8 states. [2020-12-22 19:43:17,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:17,787 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-12-22 19:43:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:43:17,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-22 19:43:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:17,789 INFO L225 Difference]: With dead ends: 32 [2020-12-22 19:43:17,789 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 19:43:17,790 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 19:43:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 19:43:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-12-22 19:43:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 19:43:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-12-22 19:43:17,794 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 23 [2020-12-22 19:43:17,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:17,812 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-12-22 19:43:17,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:43:17,812 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-12-22 19:43:17,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:43:17,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:17,814 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:18,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:18,029 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:18,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:18,031 INFO L82 PathProgramCache]: Analyzing trace with hash 485891429, now seen corresponding path program 2 times [2020-12-22 19:43:18,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:18,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137793783] [2020-12-22 19:43:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:43:18,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137793783] [2020-12-22 19:43:18,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301958217] [2020-12-22 19:43:18,132 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 19:43:18,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:43:18,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:18,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:43:18,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:43:18,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:18,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 19:43:18,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495944721] [2020-12-22 19:43:18,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:43:18,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:18,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:43:18,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:18,272 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 9 states. [2020-12-22 19:43:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:18,330 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-12-22 19:43:18,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:43:18,331 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-12-22 19:43:18,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:18,331 INFO L225 Difference]: With dead ends: 35 [2020-12-22 19:43:18,332 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 19:43:18,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 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 19:43:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 19:43:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-12-22 19:43:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:43:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-12-22 19:43:18,337 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2020-12-22 19:43:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:18,338 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-12-22 19:43:18,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:43:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-12-22 19:43:18,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:43:18,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:18,340 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:18,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:18,555 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:18,557 INFO L82 PathProgramCache]: Analyzing trace with hash -840373779, now seen corresponding path program 3 times [2020-12-22 19:43:18,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:18,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528963594] [2020-12-22 19:43:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:43:18,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528963594] [2020-12-22 19:43:18,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53576190] [2020-12-22 19:43:18,653 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 19:43:18,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:43:18,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:18,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 19:43:18,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-22 19:43:18,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:18,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2020-12-22 19:43:18,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267597430] [2020-12-22 19:43:18,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 19:43:18,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:18,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 19:43:18,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:43:18,885 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 16 states. [2020-12-22 19:43:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:19,585 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-12-22 19:43:19,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 19:43:19,586 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-12-22 19:43:19,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:19,587 INFO L225 Difference]: With dead ends: 63 [2020-12-22 19:43:19,587 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 19:43:19,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=698, Unknown=0, NotChecked=0, Total=930 [2020-12-22 19:43:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 19:43:19,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 40. [2020-12-22 19:43:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-22 19:43:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-12-22 19:43:19,593 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 29 [2020-12-22 19:43:19,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:19,594 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-12-22 19:43:19,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 19:43:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-12-22 19:43:19,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 19:43:19,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:19,595 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:19,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:19,809 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:19,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:19,810 INFO L82 PathProgramCache]: Analyzing trace with hash -730132952, now seen corresponding path program 4 times [2020-12-22 19:43:19,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:19,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726286517] [2020-12-22 19:43:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:43:19,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726286517] [2020-12-22 19:43:19,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572889823] [2020-12-22 19:43:19,922 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 19:43:19,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:43:19,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:19,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:43:19,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:43:20,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:20,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-22 19:43:20,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327503656] [2020-12-22 19:43:20,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:43:20,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:20,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:43:20,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:20,047 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 11 states. [2020-12-22 19:43:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:20,098 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-12-22 19:43:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:43:20,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-12-22 19:43:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:20,102 INFO L225 Difference]: With dead ends: 45 [2020-12-22 19:43:20,102 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 19:43:20,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 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 19:43:20,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 19:43:20,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-12-22 19:43:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 19:43:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-12-22 19:43:20,107 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 36 [2020-12-22 19:43:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:20,108 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-12-22 19:43:20,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:43:20,108 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-12-22 19:43:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 19:43:20,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:20,109 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:20,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 19:43:20,324 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:20,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:20,325 INFO L82 PathProgramCache]: Analyzing trace with hash -690106192, now seen corresponding path program 5 times [2020-12-22 19:43:20,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:20,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339045199] [2020-12-22 19:43:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:43:20,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339045199] [2020-12-22 19:43:20,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21942830] [2020-12-22 19:43:20,505 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 19:43:20,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-22 19:43:20,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:20,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:43:20,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:43:20,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:20,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-22 19:43:20,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235102744] [2020-12-22 19:43:20,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:43:20,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:20,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:43:20,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:43:20,674 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 12 states. [2020-12-22 19:43:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:20,727 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-12-22 19:43:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:43:20,727 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-12-22 19:43:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:20,728 INFO L225 Difference]: With dead ends: 48 [2020-12-22 19:43:20,728 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 19:43:20,729 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 19:43:20,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 19:43:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-12-22 19:43:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:43:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-12-22 19:43:20,734 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 39 [2020-12-22 19:43:20,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:20,735 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-12-22 19:43:20,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:43:20,735 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-12-22 19:43:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 19:43:20,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:20,736 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:20,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 19:43:20,946 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:20,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:20,947 INFO L82 PathProgramCache]: Analyzing trace with hash 2041159976, now seen corresponding path program 6 times [2020-12-22 19:43:20,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:20,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854826837] [2020-12-22 19:43:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:43:21,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854826837] [2020-12-22 19:43:21,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777835896] [2020-12-22 19:43:21,103 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 19:43:21,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-22 19:43:21,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:21,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 19:43:21,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:21,195 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:21,195 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:43:21,198 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:21,216 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:43:21,218 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:43:21,219 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-12-22 19:43:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-12-22 19:43:21,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:21,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 18 [2020-12-22 19:43:21,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623855349] [2020-12-22 19:43:21,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:43:21,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:21,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:43:21,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:43:21,454 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 8 states. [2020-12-22 19:43:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:21,654 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-12-22 19:43:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:43:21,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-12-22 19:43:21,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:21,656 INFO L225 Difference]: With dead ends: 45 [2020-12-22 19:43:21,656 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 19:43:21,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:43:21,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 19:43:21,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-12-22 19:43:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 19:43:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-22 19:43:21,661 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2020-12-22 19:43:21,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:21,661 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-22 19:43:21,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:43:21,661 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-22 19:43:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 19:43:21,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:21,662 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:21,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:21,878 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:21,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1148551848, now seen corresponding path program 1 times [2020-12-22 19:43:21,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:21,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135048077] [2020-12-22 19:43:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-12-22 19:43:21,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135048077] [2020-12-22 19:43:21,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:21,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:43:21,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64906014] [2020-12-22 19:43:21,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:21,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:21,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:21,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:21,927 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 3 states. [2020-12-22 19:43:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:21,935 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-12-22 19:43:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:21,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 19:43:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:21,936 INFO L225 Difference]: With dead ends: 43 [2020-12-22 19:43:21,936 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:43:21,937 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 19:43:21,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:43:21,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:43:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:43:21,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:43:21,938 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-12-22 19:43:21,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:21,938 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:43:21,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:21,938 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:43:21,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:43:21,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:43:21,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:43:21 BoogieIcfgContainer [2020-12-22 19:43:21,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:43:21,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:43:21,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:43:21,946 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:43:21,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:14" (3/4) ... [2020-12-22 19:43:21,952 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:43:21,964 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-22 19:43:21,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 19:43:21,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 19:43:21,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 19:43:22,009 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety-ext3/getNumbers1-2.c-witness.graphml [2020-12-22 19:43:22,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:43:22,012 INFO L168 Benchmark]: Toolchain (without parser) took 8790.41 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 126.7 MB in the beginning and 141.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:22,012 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 124.2 MB in the end (delta: 96.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:43:22,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.27 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:22,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.29 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:22,014 INFO L168 Benchmark]: Boogie Preprocessor took 32.94 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:22,015 INFO L168 Benchmark]: RCFGBuilder took 690.67 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 133.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:22,015 INFO L168 Benchmark]: TraceAbstraction took 7595.42 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 133.2 MB in the beginning and 143.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:22,016 INFO L168 Benchmark]: Witness Printer took 64.22 ms. Allocated memory is still 184.5 MB. Free memory was 143.5 MB in the beginning and 141.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:22,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 124.2 MB in the end (delta: 96.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 341.27 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.29 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.94 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 690.67 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 133.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7595.42 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 133.2 MB in the beginning and 143.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. * Witness Printer took 64.22 ms. Allocated memory is still 184.5 MB. Free memory was 143.5 MB in the beginning and 141.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 13, TraceHistogramMax: 9, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 397 SDslu, 426 SDs, 0 SdLazy, 394 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 337 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 38 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 544 NumberOfCodeBlocks, 491 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 58630 SizeOfPredicates, 16 NumberOfNonLiveVariables, 703 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 393/1051 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...