/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/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:42:33,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:42:33,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:42:33,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:42:33,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:42:33,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:42:33,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:42:33,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:42:33,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:42:33,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:42:33,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:42:33,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:42:33,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:42:33,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:42:33,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:42:33,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:42:33,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:42:33,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:42:33,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:42:33,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:42:33,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:42:33,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:42:33,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:42:33,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:42:33,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 19:42:33,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 19:42:33,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 19:42:33,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 19:42:33,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 19:42:33,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 19:42:33,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:42:33,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:42:33,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:42:33,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:42:33,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:42:33,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:42:33,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:42:33,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:42:33,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:42:33,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:42:33,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:42:33,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:42:33,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:42:33,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:42:33,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:42:33,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:42:33,969 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:42:33,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:42:33,970 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:42:33,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:42:33,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:42:33,970 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:42:33,970 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:42:33,971 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:42:33,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:42:33,971 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:42:33,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:42:33,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:42:33,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:42:33,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:42:33,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:42:33,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:42:33,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:42:33,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:42:33,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:42:33,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:42:33,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:42:34,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:42:34,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:42:34,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:42:34,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:42:34,402 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:42:34,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_10.c [2020-12-22 19:42:34,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6b972fd/ca90edc99d2b440bbf146db1234a1a1f/FLAGddeaeacd6 [2020-12-22 19:42:35,183 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:42:35,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c [2020-12-22 19:42:35,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6b972fd/ca90edc99d2b440bbf146db1234a1a1f/FLAGddeaeacd6 [2020-12-22 19:42:35,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6b972fd/ca90edc99d2b440bbf146db1234a1a1f [2020-12-22 19:42:35,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:42:35,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:42:35,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:42:35,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:42:35,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:42:35,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da31aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35, skipping insertion in model container [2020-12-22 19:42:35,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:42:35,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:42:35,798 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2020-12-22 19:42:35,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:42:35,817 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:42:35,855 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2020-12-22 19:42:35,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:42:35,874 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:42:35,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35 WrapperNode [2020-12-22 19:42:35,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:42:35,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:42:35,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:42:35,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:42:35,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:42:35,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:42:35,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:42:35,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:42:35,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ... [2020-12-22 19:42:35,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:42:35,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:42:35,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:42:35,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:42:35,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (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 19:42:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:42:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:42:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:42:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:42:36,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:42:36,521 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-22 19:42:36,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:36 BoogieIcfgContainer [2020-12-22 19:42:36,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:42:36,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:42:36,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:42:36,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:42:36,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:42:35" (1/3) ... [2020-12-22 19:42:36,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9bdc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:36, skipping insertion in model container [2020-12-22 19:42:36,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (2/3) ... [2020-12-22 19:42:36,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9bdc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:36, skipping insertion in model container [2020-12-22 19:42:36,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:36" (3/3) ... [2020-12-22 19:42:36,534 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-12-22 19:42:36,542 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:42:36,547 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 19:42:36,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 19:42:36,617 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:42:36,617 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:42:36,617 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:42:36,618 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:42:36,618 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:42:36,618 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:42:36,620 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:42:36,621 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:42:36,642 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-22 19:42:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:42:36,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:36,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:42:36,654 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:36,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:36,661 INFO L82 PathProgramCache]: Analyzing trace with hash 28703467, now seen corresponding path program 1 times [2020-12-22 19:42:36,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:36,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560296830] [2020-12-22 19:42:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:36,920 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 19:42:36,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560296830] [2020-12-22 19:42:36,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:36,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:42:36,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800974936] [2020-12-22 19:42:36,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:42:36,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:36,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:42:36,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:42:36,955 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-22 19:42:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:36,978 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-12-22 19:42:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:42:36,979 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-22 19:42:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:36,992 INFO L225 Difference]: With dead ends: 41 [2020-12-22 19:42:36,992 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 19:42:36,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:42:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 19:42:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 19:42:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 19:42:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 68 transitions. [2020-12-22 19:42:37,054 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 68 transitions. Word has length 5 [2020-12-22 19:42:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:37,055 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 68 transitions. [2020-12-22 19:42:37,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:42:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 68 transitions. [2020-12-22 19:42:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:42:37,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:37,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:42:37,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:42:37,058 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:37,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:37,060 INFO L82 PathProgramCache]: Analyzing trace with hash 889697963, now seen corresponding path program 1 times [2020-12-22 19:42:37,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:37,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475930376] [2020-12-22 19:42:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:37,145 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 19:42:37,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475930376] [2020-12-22 19:42:37,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:37,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:42:37,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124806309] [2020-12-22 19:42:37,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:37,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:37,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:37,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,150 INFO L87 Difference]: Start difference. First operand 39 states and 68 transitions. Second operand 3 states. [2020-12-22 19:42:37,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:37,164 INFO L93 Difference]: Finished difference Result 38 states and 67 transitions. [2020-12-22 19:42:37,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:37,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 19:42:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:37,167 INFO L225 Difference]: With dead ends: 38 [2020-12-22 19:42:37,167 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 19:42:37,168 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 19:42:37,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 19:42:37,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-22 19:42:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 19:42:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 65 transitions. [2020-12-22 19:42:37,174 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 65 transitions. Word has length 6 [2020-12-22 19:42:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:37,175 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 65 transitions. [2020-12-22 19:42:37,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:37,175 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 65 transitions. [2020-12-22 19:42:37,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:42:37,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:37,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:37,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:42:37,177 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:37,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:37,178 INFO L82 PathProgramCache]: Analyzing trace with hash 153349273, now seen corresponding path program 1 times [2020-12-22 19:42:37,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:37,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165187977] [2020-12-22 19:42:37,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:37,245 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 19:42:37,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165187977] [2020-12-22 19:42:37,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:37,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:37,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456013752] [2020-12-22 19:42:37,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:37,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:37,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:37,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,249 INFO L87 Difference]: Start difference. First operand 36 states and 65 transitions. Second operand 3 states. [2020-12-22 19:42:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:37,276 INFO L93 Difference]: Finished difference Result 69 states and 125 transitions. [2020-12-22 19:42:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:37,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 19:42:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:37,283 INFO L225 Difference]: With dead ends: 69 [2020-12-22 19:42:37,283 INFO L226 Difference]: Without dead ends: 69 [2020-12-22 19:42:37,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-22 19:42:37,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2020-12-22 19:42:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 19:42:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 86 transitions. [2020-12-22 19:42:37,303 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 86 transitions. Word has length 17 [2020-12-22 19:42:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:37,304 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 86 transitions. [2020-12-22 19:42:37,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 86 transitions. [2020-12-22 19:42:37,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:42:37,305 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:37,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:37,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:42:37,306 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:37,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:37,312 INFO L82 PathProgramCache]: Analyzing trace with hash -433456741, now seen corresponding path program 1 times [2020-12-22 19:42:37,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:37,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445693949] [2020-12-22 19:42:37,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:37,383 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 19:42:37,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445693949] [2020-12-22 19:42:37,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:37,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:37,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645843651] [2020-12-22 19:42:37,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:37,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:37,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:37,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,387 INFO L87 Difference]: Start difference. First operand 47 states and 86 transitions. Second operand 3 states. [2020-12-22 19:42:37,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:37,420 INFO L93 Difference]: Finished difference Result 69 states and 123 transitions. [2020-12-22 19:42:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:37,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 19:42:37,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:37,425 INFO L225 Difference]: With dead ends: 69 [2020-12-22 19:42:37,425 INFO L226 Difference]: Without dead ends: 69 [2020-12-22 19:42:37,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-22 19:42:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-12-22 19:42:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-22 19:42:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 122 transitions. [2020-12-22 19:42:37,436 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 122 transitions. Word has length 17 [2020-12-22 19:42:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:37,437 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 122 transitions. [2020-12-22 19:42:37,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 122 transitions. [2020-12-22 19:42:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:42:37,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:37,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:37,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:42:37,439 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:37,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:37,440 INFO L82 PathProgramCache]: Analyzing trace with hash 459073515, now seen corresponding path program 1 times [2020-12-22 19:42:37,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:37,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139943027] [2020-12-22 19:42:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:37,494 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 19:42:37,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139943027] [2020-12-22 19:42:37,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:37,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:37,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295753242] [2020-12-22 19:42:37,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:37,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:37,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:37,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,498 INFO L87 Difference]: Start difference. First operand 67 states and 122 transitions. Second operand 3 states. [2020-12-22 19:42:37,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:37,517 INFO L93 Difference]: Finished difference Result 72 states and 125 transitions. [2020-12-22 19:42:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:37,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-22 19:42:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:37,519 INFO L225 Difference]: With dead ends: 72 [2020-12-22 19:42:37,519 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 19:42:37,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 19:42:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-12-22 19:42:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 19:42:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 124 transitions. [2020-12-22 19:42:37,529 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 124 transitions. Word has length 18 [2020-12-22 19:42:37,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:37,530 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 124 transitions. [2020-12-22 19:42:37,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 124 transitions. [2020-12-22 19:42:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:42:37,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:37,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:37,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:42:37,532 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:37,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:37,535 INFO L82 PathProgramCache]: Analyzing trace with hash -552043735, now seen corresponding path program 1 times [2020-12-22 19:42:37,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:37,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705898921] [2020-12-22 19:42:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:37,629 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 19:42:37,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705898921] [2020-12-22 19:42:37,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:37,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:37,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792009101] [2020-12-22 19:42:37,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:37,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:37,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:37,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,632 INFO L87 Difference]: Start difference. First operand 70 states and 124 transitions. Second operand 3 states. [2020-12-22 19:42:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:37,650 INFO L93 Difference]: Finished difference Result 131 states and 234 transitions. [2020-12-22 19:42:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:37,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-22 19:42:37,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:37,653 INFO L225 Difference]: With dead ends: 131 [2020-12-22 19:42:37,653 INFO L226 Difference]: Without dead ends: 131 [2020-12-22 19:42:37,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-22 19:42:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 93. [2020-12-22 19:42:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:42:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 165 transitions. [2020-12-22 19:42:37,665 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 165 transitions. Word has length 18 [2020-12-22 19:42:37,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:37,665 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 165 transitions. [2020-12-22 19:42:37,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:37,665 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 165 transitions. [2020-12-22 19:42:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:42:37,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:37,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:37,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:42:37,667 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:37,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:37,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1138849749, now seen corresponding path program 1 times [2020-12-22 19:42:37,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:37,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2187776] [2020-12-22 19:42:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:37,734 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 19:42:37,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2187776] [2020-12-22 19:42:37,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:37,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:37,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456354709] [2020-12-22 19:42:37,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:37,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:37,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,742 INFO L87 Difference]: Start difference. First operand 93 states and 165 transitions. Second operand 3 states. [2020-12-22 19:42:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:37,782 INFO L93 Difference]: Finished difference Result 133 states and 232 transitions. [2020-12-22 19:42:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:37,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-22 19:42:37,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:37,786 INFO L225 Difference]: With dead ends: 133 [2020-12-22 19:42:37,787 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 19:42:37,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 19:42:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-12-22 19:42:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-22 19:42:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 231 transitions. [2020-12-22 19:42:37,804 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 231 transitions. Word has length 18 [2020-12-22 19:42:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:37,804 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 231 transitions. [2020-12-22 19:42:37,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 231 transitions. [2020-12-22 19:42:37,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:42:37,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:37,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:37,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:42:37,809 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:37,812 INFO L82 PathProgramCache]: Analyzing trace with hash 66727088, now seen corresponding path program 1 times [2020-12-22 19:42:37,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:37,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665015734] [2020-12-22 19:42:37,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:37,885 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 19:42:37,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665015734] [2020-12-22 19:42:37,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:37,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:37,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770354728] [2020-12-22 19:42:37,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:37,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:37,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:37,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,889 INFO L87 Difference]: Start difference. First operand 131 states and 231 transitions. Second operand 3 states. [2020-12-22 19:42:37,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:37,916 INFO L93 Difference]: Finished difference Result 135 states and 232 transitions. [2020-12-22 19:42:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:37,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 19:42:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:37,918 INFO L225 Difference]: With dead ends: 135 [2020-12-22 19:42:37,918 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 19:42:37,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 19:42:37,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-12-22 19:42:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-22 19:42:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 231 transitions. [2020-12-22 19:42:37,937 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 231 transitions. Word has length 19 [2020-12-22 19:42:37,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:37,938 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 231 transitions. [2020-12-22 19:42:37,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:37,943 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 231 transitions. [2020-12-22 19:42:37,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:42:37,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:37,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:37,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:42:37,945 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:37,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:37,946 INFO L82 PathProgramCache]: Analyzing trace with hash -944390162, now seen corresponding path program 1 times [2020-12-22 19:42:37,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:37,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858317544] [2020-12-22 19:42:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:37,976 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 19:42:37,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858317544] [2020-12-22 19:42:37,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:37,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:37,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888108984] [2020-12-22 19:42:37,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:37,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:37,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:37,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,979 INFO L87 Difference]: Start difference. First operand 133 states and 231 transitions. Second operand 3 states. [2020-12-22 19:42:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:37,992 INFO L93 Difference]: Finished difference Result 255 states and 436 transitions. [2020-12-22 19:42:37,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:37,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 19:42:37,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:37,995 INFO L225 Difference]: With dead ends: 255 [2020-12-22 19:42:37,995 INFO L226 Difference]: Without dead ends: 255 [2020-12-22 19:42:37,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-12-22 19:42:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2020-12-22 19:42:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-12-22 19:42:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 435 transitions. [2020-12-22 19:42:38,008 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 435 transitions. Word has length 19 [2020-12-22 19:42:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,008 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 435 transitions. [2020-12-22 19:42:38,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 435 transitions. [2020-12-22 19:42:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:42:38,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:42:38,011 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,012 INFO L82 PathProgramCache]: Analyzing trace with hash -357584148, now seen corresponding path program 1 times [2020-12-22 19:42:38,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772165418] [2020-12-22 19:42:38,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,042 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 19:42:38,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772165418] [2020-12-22 19:42:38,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31960269] [2020-12-22 19:42:38,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,044 INFO L87 Difference]: Start difference. First operand 253 states and 435 transitions. Second operand 3 states. [2020-12-22 19:42:38,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,057 INFO L93 Difference]: Finished difference Result 319 states and 552 transitions. [2020-12-22 19:42:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 19:42:38,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,060 INFO L225 Difference]: With dead ends: 319 [2020-12-22 19:42:38,061 INFO L226 Difference]: Without dead ends: 319 [2020-12-22 19:42:38,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-12-22 19:42:38,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 253. [2020-12-22 19:42:38,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-12-22 19:42:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 431 transitions. [2020-12-22 19:42:38,074 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 431 transitions. Word has length 19 [2020-12-22 19:42:38,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,074 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 431 transitions. [2020-12-22 19:42:38,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,074 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 431 transitions. [2020-12-22 19:42:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:42:38,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:42:38,077 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash 788890080, now seen corresponding path program 1 times [2020-12-22 19:42:38,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543755374] [2020-12-22 19:42:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,107 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 19:42:38,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543755374] [2020-12-22 19:42:38,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706819619] [2020-12-22 19:42:38,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,110 INFO L87 Difference]: Start difference. First operand 253 states and 431 transitions. Second operand 3 states. [2020-12-22 19:42:38,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,124 INFO L93 Difference]: Finished difference Result 467 states and 800 transitions. [2020-12-22 19:42:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:42:38,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,128 INFO L225 Difference]: With dead ends: 467 [2020-12-22 19:42:38,128 INFO L226 Difference]: Without dead ends: 467 [2020-12-22 19:42:38,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-12-22 19:42:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 353. [2020-12-22 19:42:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-12-22 19:42:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 591 transitions. [2020-12-22 19:42:38,143 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 591 transitions. Word has length 20 [2020-12-22 19:42:38,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,143 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 591 transitions. [2020-12-22 19:42:38,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 591 transitions. [2020-12-22 19:42:38,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:42:38,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:42:38,147 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,148 INFO L82 PathProgramCache]: Analyzing trace with hash 202084066, now seen corresponding path program 1 times [2020-12-22 19:42:38,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543830051] [2020-12-22 19:42:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,176 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 19:42:38,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543830051] [2020-12-22 19:42:38,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713884928] [2020-12-22 19:42:38,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,179 INFO L87 Difference]: Start difference. First operand 353 states and 591 transitions. Second operand 3 states. [2020-12-22 19:42:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,193 INFO L93 Difference]: Finished difference Result 491 states and 812 transitions. [2020-12-22 19:42:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:42:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,197 INFO L225 Difference]: With dead ends: 491 [2020-12-22 19:42:38,197 INFO L226 Difference]: Without dead ends: 491 [2020-12-22 19:42:38,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-12-22 19:42:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2020-12-22 19:42:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-12-22 19:42:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 811 transitions. [2020-12-22 19:42:38,211 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 811 transitions. Word has length 20 [2020-12-22 19:42:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,212 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 811 transitions. [2020-12-22 19:42:38,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 811 transitions. [2020-12-22 19:42:38,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:38,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:42:38,215 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1313996925, now seen corresponding path program 1 times [2020-12-22 19:42:38,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84978730] [2020-12-22 19:42:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,244 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 19:42:38,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84978730] [2020-12-22 19:42:38,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960921658] [2020-12-22 19:42:38,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,246 INFO L87 Difference]: Start difference. First operand 489 states and 811 transitions. Second operand 3 states. [2020-12-22 19:42:38,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,260 INFO L93 Difference]: Finished difference Result 503 states and 820 transitions. [2020-12-22 19:42:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,264 INFO L225 Difference]: With dead ends: 503 [2020-12-22 19:42:38,264 INFO L226 Difference]: Without dead ends: 503 [2020-12-22 19:42:38,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-12-22 19:42:38,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2020-12-22 19:42:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-12-22 19:42:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 819 transitions. [2020-12-22 19:42:38,278 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 819 transitions. Word has length 21 [2020-12-22 19:42:38,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,279 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 819 transitions. [2020-12-22 19:42:38,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,279 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 819 transitions. [2020-12-22 19:42:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:38,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:42:38,281 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1969853121, now seen corresponding path program 1 times [2020-12-22 19:42:38,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008875826] [2020-12-22 19:42:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,308 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 19:42:38,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008875826] [2020-12-22 19:42:38,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428152368] [2020-12-22 19:42:38,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,311 INFO L87 Difference]: Start difference. First operand 501 states and 819 transitions. Second operand 3 states. [2020-12-22 19:42:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,334 INFO L93 Difference]: Finished difference Result 903 states and 1484 transitions. [2020-12-22 19:42:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:38,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,341 INFO L225 Difference]: With dead ends: 903 [2020-12-22 19:42:38,341 INFO L226 Difference]: Without dead ends: 903 [2020-12-22 19:42:38,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-12-22 19:42:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 709. [2020-12-22 19:42:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-12-22 19:42:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1131 transitions. [2020-12-22 19:42:38,366 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1131 transitions. Word has length 21 [2020-12-22 19:42:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,367 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 1131 transitions. [2020-12-22 19:42:38,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,367 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1131 transitions. [2020-12-22 19:42:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:38,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:42:38,372 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1383047107, now seen corresponding path program 1 times [2020-12-22 19:42:38,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501325166] [2020-12-22 19:42:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,437 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 19:42:38,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501325166] [2020-12-22 19:42:38,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341690469] [2020-12-22 19:42:38,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,446 INFO L87 Difference]: Start difference. First operand 709 states and 1131 transitions. Second operand 3 states. [2020-12-22 19:42:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,494 INFO L93 Difference]: Finished difference Result 967 states and 1524 transitions. [2020-12-22 19:42:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,500 INFO L225 Difference]: With dead ends: 967 [2020-12-22 19:42:38,501 INFO L226 Difference]: Without dead ends: 967 [2020-12-22 19:42:38,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2020-12-22 19:42:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 965. [2020-12-22 19:42:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-12-22 19:42:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1523 transitions. [2020-12-22 19:42:38,531 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1523 transitions. Word has length 21 [2020-12-22 19:42:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,532 INFO L481 AbstractCegarLoop]: Abstraction has 965 states and 1523 transitions. [2020-12-22 19:42:38,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1523 transitions. [2020-12-22 19:42:38,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:38,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:42:38,534 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,535 INFO L82 PathProgramCache]: Analyzing trace with hash 936119319, now seen corresponding path program 1 times [2020-12-22 19:42:38,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487025884] [2020-12-22 19:42:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,562 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 19:42:38,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487025884] [2020-12-22 19:42:38,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329627092] [2020-12-22 19:42:38,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,565 INFO L87 Difference]: Start difference. First operand 965 states and 1523 transitions. Second operand 3 states. [2020-12-22 19:42:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,584 INFO L93 Difference]: Finished difference Result 983 states and 1524 transitions. [2020-12-22 19:42:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,591 INFO L225 Difference]: With dead ends: 983 [2020-12-22 19:42:38,591 INFO L226 Difference]: Without dead ends: 983 [2020-12-22 19:42:38,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-12-22 19:42:38,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2020-12-22 19:42:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-12-22 19:42:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1523 transitions. [2020-12-22 19:42:38,624 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1523 transitions. Word has length 22 [2020-12-22 19:42:38,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,625 INFO L481 AbstractCegarLoop]: Abstraction has 981 states and 1523 transitions. [2020-12-22 19:42:38,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,625 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1523 transitions. [2020-12-22 19:42:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:38,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:42:38,628 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,629 INFO L82 PathProgramCache]: Analyzing trace with hash -74997931, now seen corresponding path program 1 times [2020-12-22 19:42:38,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442483617] [2020-12-22 19:42:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,653 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 19:42:38,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442483617] [2020-12-22 19:42:38,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505577868] [2020-12-22 19:42:38,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,656 INFO L87 Difference]: Start difference. First operand 981 states and 1523 transitions. Second operand 3 states. [2020-12-22 19:42:38,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,678 INFO L93 Difference]: Finished difference Result 1735 states and 2708 transitions. [2020-12-22 19:42:38,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:38,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,689 INFO L225 Difference]: With dead ends: 1735 [2020-12-22 19:42:38,689 INFO L226 Difference]: Without dead ends: 1735 [2020-12-22 19:42:38,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2020-12-22 19:42:38,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1413. [2020-12-22 19:42:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2020-12-22 19:42:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2131 transitions. [2020-12-22 19:42:38,736 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2131 transitions. Word has length 22 [2020-12-22 19:42:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,736 INFO L481 AbstractCegarLoop]: Abstraction has 1413 states and 2131 transitions. [2020-12-22 19:42:38,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2131 transitions. [2020-12-22 19:42:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:38,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:42:38,740 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,741 INFO L82 PathProgramCache]: Analyzing trace with hash -661803945, now seen corresponding path program 1 times [2020-12-22 19:42:38,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26814769] [2020-12-22 19:42:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,765 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 19:42:38,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26814769] [2020-12-22 19:42:38,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336760129] [2020-12-22 19:42:38,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,768 INFO L87 Difference]: Start difference. First operand 1413 states and 2131 transitions. Second operand 3 states. [2020-12-22 19:42:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,793 INFO L93 Difference]: Finished difference Result 1895 states and 2820 transitions. [2020-12-22 19:42:38,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,804 INFO L225 Difference]: With dead ends: 1895 [2020-12-22 19:42:38,804 INFO L226 Difference]: Without dead ends: 1895 [2020-12-22 19:42:38,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-12-22 19:42:38,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1893. [2020-12-22 19:42:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-12-22 19:42:38,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2819 transitions. [2020-12-22 19:42:38,856 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2819 transitions. Word has length 22 [2020-12-22 19:42:38,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,856 INFO L481 AbstractCegarLoop]: Abstraction has 1893 states and 2819 transitions. [2020-12-22 19:42:38,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2819 transitions. [2020-12-22 19:42:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:38,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:42:38,860 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1970246488, now seen corresponding path program 1 times [2020-12-22 19:42:38,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598794593] [2020-12-22 19:42:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,881 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 19:42:38,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598794593] [2020-12-22 19:42:38,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639116094] [2020-12-22 19:42:38,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,883 INFO L87 Difference]: Start difference. First operand 1893 states and 2819 transitions. Second operand 3 states. [2020-12-22 19:42:38,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,904 INFO L93 Difference]: Finished difference Result 1927 states and 2820 transitions. [2020-12-22 19:42:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,915 INFO L225 Difference]: With dead ends: 1927 [2020-12-22 19:42:38,915 INFO L226 Difference]: Without dead ends: 1927 [2020-12-22 19:42:38,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-12-22 19:42:38,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1925. [2020-12-22 19:42:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2020-12-22 19:42:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2819 transitions. [2020-12-22 19:42:38,972 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2819 transitions. Word has length 23 [2020-12-22 19:42:38,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,972 INFO L481 AbstractCegarLoop]: Abstraction has 1925 states and 2819 transitions. [2020-12-22 19:42:38,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2819 transitions. [2020-12-22 19:42:38,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:38,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 19:42:38,975 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,976 INFO L82 PathProgramCache]: Analyzing trace with hash 959129238, now seen corresponding path program 1 times [2020-12-22 19:42:38,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016517587] [2020-12-22 19:42:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,996 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 19:42:38,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016517587] [2020-12-22 19:42:38,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:38,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446086207] [2020-12-22 19:42:38,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,998 INFO L87 Difference]: Start difference. First operand 1925 states and 2819 transitions. Second operand 3 states. [2020-12-22 19:42:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,036 INFO L93 Difference]: Finished difference Result 3335 states and 4900 transitions. [2020-12-22 19:42:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,053 INFO L225 Difference]: With dead ends: 3335 [2020-12-22 19:42:39,053 INFO L226 Difference]: Without dead ends: 3335 [2020-12-22 19:42:39,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2020-12-22 19:42:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 2821. [2020-12-22 19:42:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2020-12-22 19:42:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4003 transitions. [2020-12-22 19:42:39,150 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4003 transitions. Word has length 23 [2020-12-22 19:42:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,150 INFO L481 AbstractCegarLoop]: Abstraction has 2821 states and 4003 transitions. [2020-12-22 19:42:39,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4003 transitions. [2020-12-22 19:42:39,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:39,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:42:39,156 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,156 INFO L82 PathProgramCache]: Analyzing trace with hash 372323224, now seen corresponding path program 1 times [2020-12-22 19:42:39,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070635366] [2020-12-22 19:42:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,185 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 19:42:39,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070635366] [2020-12-22 19:42:39,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759781957] [2020-12-22 19:42:39,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,190 INFO L87 Difference]: Start difference. First operand 2821 states and 4003 transitions. Second operand 3 states. [2020-12-22 19:42:39,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,221 INFO L93 Difference]: Finished difference Result 3719 states and 5188 transitions. [2020-12-22 19:42:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,239 INFO L225 Difference]: With dead ends: 3719 [2020-12-22 19:42:39,240 INFO L226 Difference]: Without dead ends: 3719 [2020-12-22 19:42:39,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-12-22 19:42:39,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3717. [2020-12-22 19:42:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3717 states. [2020-12-22 19:42:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 5187 transitions. [2020-12-22 19:42:39,333 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 5187 transitions. Word has length 23 [2020-12-22 19:42:39,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,333 INFO L481 AbstractCegarLoop]: Abstraction has 3717 states and 5187 transitions. [2020-12-22 19:42:39,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 5187 transitions. [2020-12-22 19:42:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:39,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 19:42:39,338 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,339 INFO L82 PathProgramCache]: Analyzing trace with hash -331549300, now seen corresponding path program 1 times [2020-12-22 19:42:39,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458185173] [2020-12-22 19:42:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,376 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 19:42:39,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458185173] [2020-12-22 19:42:39,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974495095] [2020-12-22 19:42:39,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,379 INFO L87 Difference]: Start difference. First operand 3717 states and 5187 transitions. Second operand 3 states. [2020-12-22 19:42:39,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,409 INFO L93 Difference]: Finished difference Result 3783 states and 5188 transitions. [2020-12-22 19:42:39,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,428 INFO L225 Difference]: With dead ends: 3783 [2020-12-22 19:42:39,428 INFO L226 Difference]: Without dead ends: 3783 [2020-12-22 19:42:39,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2020-12-22 19:42:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3781. [2020-12-22 19:42:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2020-12-22 19:42:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5187 transitions. [2020-12-22 19:42:39,520 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5187 transitions. Word has length 24 [2020-12-22 19:42:39,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,520 INFO L481 AbstractCegarLoop]: Abstraction has 3781 states and 5187 transitions. [2020-12-22 19:42:39,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5187 transitions. [2020-12-22 19:42:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:39,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 19:42:39,526 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1342666550, now seen corresponding path program 1 times [2020-12-22 19:42:39,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606380984] [2020-12-22 19:42:39,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,556 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 19:42:39,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606380984] [2020-12-22 19:42:39,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916038261] [2020-12-22 19:42:39,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,564 INFO L87 Difference]: Start difference. First operand 3781 states and 5187 transitions. Second operand 3 states. [2020-12-22 19:42:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,604 INFO L93 Difference]: Finished difference Result 6407 states and 8772 transitions. [2020-12-22 19:42:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,656 INFO L225 Difference]: With dead ends: 6407 [2020-12-22 19:42:39,656 INFO L226 Difference]: Without dead ends: 6407 [2020-12-22 19:42:39,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2020-12-22 19:42:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 5637. [2020-12-22 19:42:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5637 states. [2020-12-22 19:42:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 7491 transitions. [2020-12-22 19:42:39,855 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 7491 transitions. Word has length 24 [2020-12-22 19:42:39,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,855 INFO L481 AbstractCegarLoop]: Abstraction has 5637 states and 7491 transitions. [2020-12-22 19:42:39,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 7491 transitions. [2020-12-22 19:42:39,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:39,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 19:42:39,868 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1929472564, now seen corresponding path program 1 times [2020-12-22 19:42:39,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203532046] [2020-12-22 19:42:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,891 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 19:42:39,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203532046] [2020-12-22 19:42:39,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238907283] [2020-12-22 19:42:39,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,897 INFO L87 Difference]: Start difference. First operand 5637 states and 7491 transitions. Second operand 3 states. [2020-12-22 19:42:39,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,941 INFO L93 Difference]: Finished difference Result 7303 states and 9476 transitions. [2020-12-22 19:42:39,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:39,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,956 INFO L225 Difference]: With dead ends: 7303 [2020-12-22 19:42:39,956 INFO L226 Difference]: Without dead ends: 7303 [2020-12-22 19:42:39,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7303 states. [2020-12-22 19:42:40,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7303 to 7301. [2020-12-22 19:42:40,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7301 states. [2020-12-22 19:42:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7301 states to 7301 states and 9475 transitions. [2020-12-22 19:42:40,123 INFO L78 Accepts]: Start accepts. Automaton has 7301 states and 9475 transitions. Word has length 24 [2020-12-22 19:42:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,123 INFO L481 AbstractCegarLoop]: Abstraction has 7301 states and 9475 transitions. [2020-12-22 19:42:40,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 7301 states and 9475 transitions. [2020-12-22 19:42:40,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:40,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 19:42:40,132 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1327225645, now seen corresponding path program 1 times [2020-12-22 19:42:40,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552562136] [2020-12-22 19:42:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,170 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 19:42:40,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552562136] [2020-12-22 19:42:40,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948826996] [2020-12-22 19:42:40,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,173 INFO L87 Difference]: Start difference. First operand 7301 states and 9475 transitions. Second operand 3 states. [2020-12-22 19:42:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,208 INFO L93 Difference]: Finished difference Result 7431 states and 9476 transitions. [2020-12-22 19:42:40,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,225 INFO L225 Difference]: With dead ends: 7431 [2020-12-22 19:42:40,226 INFO L226 Difference]: Without dead ends: 7431 [2020-12-22 19:42:40,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2020-12-22 19:42:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7429. [2020-12-22 19:42:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7429 states. [2020-12-22 19:42:40,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7429 states to 7429 states and 9475 transitions. [2020-12-22 19:42:40,416 INFO L78 Accepts]: Start accepts. Automaton has 7429 states and 9475 transitions. Word has length 25 [2020-12-22 19:42:40,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,417 INFO L481 AbstractCegarLoop]: Abstraction has 7429 states and 9475 transitions. [2020-12-22 19:42:40,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,417 INFO L276 IsEmpty]: Start isEmpty. Operand 7429 states and 9475 transitions. [2020-12-22 19:42:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:40,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 19:42:40,429 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,430 INFO L82 PathProgramCache]: Analyzing trace with hash 316108395, now seen corresponding path program 1 times [2020-12-22 19:42:40,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271482336] [2020-12-22 19:42:40,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,454 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 19:42:40,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271482336] [2020-12-22 19:42:40,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774019346] [2020-12-22 19:42:40,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,458 INFO L87 Difference]: Start difference. First operand 7429 states and 9475 transitions. Second operand 3 states. [2020-12-22 19:42:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,509 INFO L93 Difference]: Finished difference Result 12295 states and 15492 transitions. [2020-12-22 19:42:40,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:40,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,540 INFO L225 Difference]: With dead ends: 12295 [2020-12-22 19:42:40,540 INFO L226 Difference]: Without dead ends: 12295 [2020-12-22 19:42:40,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12295 states. [2020-12-22 19:42:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12295 to 11269. [2020-12-22 19:42:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11269 states. [2020-12-22 19:42:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 13955 transitions. [2020-12-22 19:42:40,843 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 13955 transitions. Word has length 25 [2020-12-22 19:42:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,844 INFO L481 AbstractCegarLoop]: Abstraction has 11269 states and 13955 transitions. [2020-12-22 19:42:40,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 13955 transitions. [2020-12-22 19:42:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:40,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 19:42:40,865 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,866 INFO L82 PathProgramCache]: Analyzing trace with hash -270697619, now seen corresponding path program 1 times [2020-12-22 19:42:40,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51172497] [2020-12-22 19:42:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,889 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 19:42:40,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51172497] [2020-12-22 19:42:40,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790192610] [2020-12-22 19:42:40,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,894 INFO L87 Difference]: Start difference. First operand 11269 states and 13955 transitions. Second operand 3 states. [2020-12-22 19:42:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,952 INFO L93 Difference]: Finished difference Result 14343 states and 17156 transitions. [2020-12-22 19:42:40,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,984 INFO L225 Difference]: With dead ends: 14343 [2020-12-22 19:42:40,984 INFO L226 Difference]: Without dead ends: 14343 [2020-12-22 19:42:40,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14343 states. [2020-12-22 19:42:41,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14343 to 14341. [2020-12-22 19:42:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14341 states. [2020-12-22 19:42:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 17155 transitions. [2020-12-22 19:42:41,368 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 17155 transitions. Word has length 25 [2020-12-22 19:42:41,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,368 INFO L481 AbstractCegarLoop]: Abstraction has 14341 states and 17155 transitions. [2020-12-22 19:42:41,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 17155 transitions. [2020-12-22 19:42:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:41,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 19:42:41,387 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1209641729, now seen corresponding path program 1 times [2020-12-22 19:42:41,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229665420] [2020-12-22 19:42:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,422 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 19:42:41,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229665420] [2020-12-22 19:42:41,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819716741] [2020-12-22 19:42:41,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,425 INFO L87 Difference]: Start difference. First operand 14341 states and 17155 transitions. Second operand 3 states. [2020-12-22 19:42:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,486 INFO L93 Difference]: Finished difference Result 14599 states and 17156 transitions. [2020-12-22 19:42:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,594 INFO L225 Difference]: With dead ends: 14599 [2020-12-22 19:42:41,595 INFO L226 Difference]: Without dead ends: 14599 [2020-12-22 19:42:41,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2020-12-22 19:42:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 14597. [2020-12-22 19:42:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14597 states. [2020-12-22 19:42:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 17155 transitions. [2020-12-22 19:42:41,924 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 17155 transitions. Word has length 26 [2020-12-22 19:42:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,924 INFO L481 AbstractCegarLoop]: Abstraction has 14597 states and 17155 transitions. [2020-12-22 19:42:41,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 17155 transitions. [2020-12-22 19:42:41,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:41,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 19:42:41,943 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,944 INFO L82 PathProgramCache]: Analyzing trace with hash 198524479, now seen corresponding path program 1 times [2020-12-22 19:42:41,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235463361] [2020-12-22 19:42:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,962 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 19:42:41,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235463361] [2020-12-22 19:42:41,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874933353] [2020-12-22 19:42:41,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,964 INFO L87 Difference]: Start difference. First operand 14597 states and 17155 transitions. Second operand 3 states. [2020-12-22 19:42:42,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,029 INFO L93 Difference]: Finished difference Result 23557 states and 26883 transitions. [2020-12-22 19:42:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,077 INFO L225 Difference]: With dead ends: 23557 [2020-12-22 19:42:42,078 INFO L226 Difference]: Without dead ends: 23557 [2020-12-22 19:42:42,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-12-22 19:42:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 22533. [2020-12-22 19:42:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22533 states. [2020-12-22 19:42:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 25859 transitions. [2020-12-22 19:42:42,686 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 25859 transitions. Word has length 26 [2020-12-22 19:42:42,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,687 INFO L481 AbstractCegarLoop]: Abstraction has 22533 states and 25859 transitions. [2020-12-22 19:42:42,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 25859 transitions. [2020-12-22 19:42:42,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:42,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 19:42:42,732 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,732 INFO L82 PathProgramCache]: Analyzing trace with hash -388281535, now seen corresponding path program 1 times [2020-12-22 19:42:42,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654485283] [2020-12-22 19:42:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,777 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 19:42:42,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654485283] [2020-12-22 19:42:42,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792037176] [2020-12-22 19:42:42,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,782 INFO L87 Difference]: Start difference. First operand 22533 states and 25859 transitions. Second operand 3 states. [2020-12-22 19:42:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:43,007 INFO L93 Difference]: Finished difference Result 28163 states and 30722 transitions. [2020-12-22 19:42:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:43,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:43,008 INFO L225 Difference]: With dead ends: 28163 [2020-12-22 19:42:43,008 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:42:43,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:42:43,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:42:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:42:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:42:43,010 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-12-22 19:42:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:43,010 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:42:43,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:43,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:42:43,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:42:43,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 19:42:43,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:42:43 BoogieIcfgContainer [2020-12-22 19:42:43,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:42:43,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:42:43,018 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:42:43,018 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:42:43,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:36" (3/4) ... [2020-12-22 19:42:43,021 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:42:43,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 19:42:43,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 19:42:43,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-22 19:42:43,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 19:42:43,120 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_10.c-witness.graphml [2020-12-22 19:42:43,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:42:43,123 INFO L168 Benchmark]: Toolchain (without parser) took 7601.47 ms. Allocated memory was 173.0 MB in the beginning and 647.0 MB in the end (delta: 474.0 MB). Free memory was 147.3 MB in the beginning and 459.8 MB in the end (delta: -312.5 MB). Peak memory consumption was 162.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:43,123 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 173.0 MB. Free memory is still 148.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:42:43,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.74 ms. Allocated memory is still 173.0 MB. Free memory was 147.1 MB in the beginning and 136.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:43,124 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.14 ms. Allocated memory is still 173.0 MB. Free memory was 136.8 MB in the beginning and 135.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:43,124 INFO L168 Benchmark]: Boogie Preprocessor took 31.72 ms. Allocated memory is still 173.0 MB. Free memory was 135.0 MB in the beginning and 133.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:43,125 INFO L168 Benchmark]: RCFGBuilder took 568.89 ms. Allocated memory is still 173.0 MB. Free memory was 133.7 MB in the beginning and 112.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:43,125 INFO L168 Benchmark]: TraceAbstraction took 6491.75 ms. Allocated memory was 173.0 MB in the beginning and 647.0 MB in the end (delta: 474.0 MB). Free memory was 112.5 MB in the beginning and 463.5 MB in the end (delta: -351.0 MB). Peak memory consumption was 123.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:43,126 INFO L168 Benchmark]: Witness Printer took 102.88 ms. Allocated memory is still 647.0 MB. Free memory was 463.5 MB in the beginning and 459.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:43,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 173.0 MB. Free memory is still 148.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 350.74 ms. Allocated memory is still 173.0 MB. Free memory was 147.1 MB in the beginning and 136.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.14 ms. Allocated memory is still 173.0 MB. Free memory was 136.8 MB in the beginning and 135.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.72 ms. Allocated memory is still 173.0 MB. Free memory was 135.0 MB in the beginning and 133.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 568.89 ms. Allocated memory is still 173.0 MB. Free memory was 133.7 MB in the beginning and 112.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6491.75 ms. Allocated memory was 173.0 MB in the beginning and 647.0 MB in the end (delta: 474.0 MB). Free memory was 112.5 MB in the beginning and 463.5 MB in the end (delta: -351.0 MB). Peak memory consumption was 123.4 MB. Max. memory is 8.0 GB. * Witness Printer took 102.88 ms. Allocated memory is still 647.0 MB. Free memory was 463.5 MB in the beginning and 459.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 163]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.3s, OverallIterations: 30, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2433 SDtfs, 1207 SDslu, 1529 SDs, 0 SdLazy, 150 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22533occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 30 MinimizatonAttempts, 4124 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 619 NumberOfCodeBlocks, 619 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 26029 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...