/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/array-examples/standard_strcpy_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:03:25,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:03:25,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:03:25,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:03:25,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:03:25,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:03:25,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:03:25,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:03:25,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:03:25,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:03:25,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:03:25,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:03:25,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:03:25,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:03:25,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:03:25,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:03:25,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:03:25,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:03:25,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:03:25,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:03:25,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:03:25,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:03:25,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:03:25,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:03:25,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:03:25,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:03:25,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:03:25,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:03:25,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:03:25,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:03:25,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:03:25,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:03:25,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:03:25,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:03:25,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:03:25,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:03:25,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:03:25,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:03:25,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:03:25,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:03:25,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:03:25,346 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:03:25,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:03:25,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:03:25,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:03:25,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:03:25,347 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:03:25,348 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:03:25,348 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:03:25,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:03:25,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:03:25,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:03:25,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:03:25,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:03:25,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:03:25,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:03:25,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:03:25,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:03:25,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:03:25,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:03:25,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:03:25,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:03:25,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:03:25,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:03:25,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:03:25,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:03:25,823 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:03:25,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i [2020-12-22 19:03:25,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce1ee64c0/ec108a6767684fa695e7f06a914d7a99/FLAG7fd588e52 [2020-12-22 19:03:26,675 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:03:26,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i [2020-12-22 19:03:26,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce1ee64c0/ec108a6767684fa695e7f06a914d7a99/FLAG7fd588e52 [2020-12-22 19:03:27,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce1ee64c0/ec108a6767684fa695e7f06a914d7a99 [2020-12-22 19:03:27,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:03:27,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:03:27,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:03:27,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:03:27,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:03:27,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60394214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27, skipping insertion in model container [2020-12-22 19:03:27,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:03:27,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:03:27,241 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/array-examples/standard_strcpy_ground-2.i[817,830] [2020-12-22 19:03:27,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:03:27,273 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:03:27,291 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/array-examples/standard_strcpy_ground-2.i[817,830] [2020-12-22 19:03:27,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:03:27,322 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:03:27,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27 WrapperNode [2020-12-22 19:03:27,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:03:27,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:03:27,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:03:27,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:03:27,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:03:27,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:03:27,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:03:27,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:03:27,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (1/1) ... [2020-12-22 19:03:27,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:03:27,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:03:27,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:03:27,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:03:27,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:03:27,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:03:27,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:03:27,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:03:27,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:03:27,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:03:27,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:03:27,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:03:28,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:03:28,028 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 19:03:28,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:03:28 BoogieIcfgContainer [2020-12-22 19:03:28,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:03:28,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:03:28,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:03:28,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:03:28,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:03:27" (1/3) ... [2020-12-22 19:03:28,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624d4297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:03:28, skipping insertion in model container [2020-12-22 19:03:28,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:27" (2/3) ... [2020-12-22 19:03:28,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624d4297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:03:28, skipping insertion in model container [2020-12-22 19:03:28,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:03:28" (3/3) ... [2020-12-22 19:03:28,062 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_strcpy_ground-2.i [2020-12-22 19:03:28,072 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:03:28,079 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2020-12-22 19:03:28,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2020-12-22 19:03:28,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:03:28,125 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:03:28,125 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:03:28,125 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:03:28,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:03:28,126 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:03:28,126 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:03:28,126 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:03:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-22 19:03:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:03:28,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:28,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:03:28,155 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:28,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:28,163 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-12-22 19:03:28,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:28,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014152042] [2020-12-22 19:03:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:28,414 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 19:03:28,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014152042] [2020-12-22 19:03:28,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:03:28,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:03:28,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411512677] [2020-12-22 19:03:28,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:03:28,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:28,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:03:28,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:03:28,465 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-12-22 19:03:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:28,600 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-12-22 19:03:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:03:28,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:03:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:28,613 INFO L225 Difference]: With dead ends: 35 [2020-12-22 19:03:28,613 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 19:03:28,617 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 19:03:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 19:03:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-22 19:03:28,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:03:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-22 19:03:28,676 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 4 [2020-12-22 19:03:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:28,677 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-22 19:03:28,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:03:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-22 19:03:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:03:28,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:28,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:03:28,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:03:28,682 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:28,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:28,687 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2020-12-22 19:03:28,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:28,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151366978] [2020-12-22 19:03:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:28,795 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 19:03:28,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151366978] [2020-12-22 19:03:28,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:03:28,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:03:28,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536741029] [2020-12-22 19:03:28,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:03:28,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:28,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:03:28,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:03:28,800 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 3 states. [2020-12-22 19:03:28,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:28,851 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-12-22 19:03:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:03:28,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:03:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:28,853 INFO L225 Difference]: With dead ends: 37 [2020-12-22 19:03:28,853 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 19:03:28,854 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 19:03:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 19:03:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-12-22 19:03:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 19:03:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-22 19:03:28,860 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 4 [2020-12-22 19:03:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:28,861 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-22 19:03:28,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:03:28,861 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-22 19:03:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:03:28,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:28,862 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:28,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:03:28,862 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:28,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:28,863 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2020-12-22 19:03:28,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:28,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515051528] [2020-12-22 19:03:28,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:28,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515051528] [2020-12-22 19:03:28,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912978553] [2020-12-22 19:03:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:29,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:03:29,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:29,210 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:03:29,213 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:03:29,218 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:29,230 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:29,245 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:29,246 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-12-22 19:03:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:29,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:29,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-12-22 19:03:29,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144589940] [2020-12-22 19:03:29,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:03:29,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:29,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:03:29,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:03:29,339 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2020-12-22 19:03:29,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:29,470 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-12-22 19:03:29,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:03:29,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 19:03:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:29,475 INFO L225 Difference]: With dead ends: 41 [2020-12-22 19:03:29,475 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 19:03:29,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:03:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 19:03:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-12-22 19:03:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 19:03:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-22 19:03:29,492 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 8 [2020-12-22 19:03:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:29,493 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-22 19:03:29,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:03:29,495 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-22 19:03:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:03:29,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:29,496 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2020-12-22 19:03:29,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 19:03:29,712 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:29,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:29,714 INFO L82 PathProgramCache]: Analyzing trace with hash 276944844, now seen corresponding path program 2 times [2020-12-22 19:03:29,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:29,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064111309] [2020-12-22 19:03:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:29,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064111309] [2020-12-22 19:03:29,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123605062] [2020-12-22 19:03:29,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:29,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:03:29,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:29,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:03:29,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:29,978 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:03:29,979 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:03:29,982 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:29,992 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:30,000 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:30,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-12-22 19:03:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:30,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:03:30,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2020-12-22 19:03:30,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605019185] [2020-12-22 19:03:30,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:03:30,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:30,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:03:30,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:03:30,179 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2020-12-22 19:03:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:30,341 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-12-22 19:03:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:03:30,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 19:03:30,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:30,343 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:03:30,343 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 19:03:30,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:03:30,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 19:03:30,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 45. [2020-12-22 19:03:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:03:30,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-12-22 19:03:30,350 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 12 [2020-12-22 19:03:30,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:30,351 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-12-22 19:03:30,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:03:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-12-22 19:03:30,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:03:30,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:30,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-22 19:03:30,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:30,568 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:30,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:30,570 INFO L82 PathProgramCache]: Analyzing trace with hash -4646106, now seen corresponding path program 1 times [2020-12-22 19:03:30,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:30,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067069223] [2020-12-22 19:03:30,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:30,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067069223] [2020-12-22 19:03:30,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186509393] [2020-12-22 19:03:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:30,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:03:30,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:30,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:30,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2020-12-22 19:03:30,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187117927] [2020-12-22 19:03:30,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:03:30,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:30,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:03:30,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:03:30,768 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 8 states. [2020-12-22 19:03:30,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:30,949 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-12-22 19:03:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:03:30,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-12-22 19:03:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:30,951 INFO L225 Difference]: With dead ends: 115 [2020-12-22 19:03:30,951 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 19:03:30,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:03:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 19:03:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 49. [2020-12-22 19:03:30,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 19:03:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-22 19:03:30,958 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 13 [2020-12-22 19:03:30,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:30,959 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-22 19:03:30,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:03:30,959 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-22 19:03:30,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:03:30,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:30,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:31,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:31,176 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:31,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:31,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2110059869, now seen corresponding path program 1 times [2020-12-22 19:03:31,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:31,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469807948] [2020-12-22 19:03:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:03:31,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469807948] [2020-12-22 19:03:31,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:03:31,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:03:31,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410724218] [2020-12-22 19:03:31,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:03:31,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:31,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:03:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:03:31,276 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 3 states. [2020-12-22 19:03:31,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:31,300 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-12-22 19:03:31,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:03:31,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:03:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:31,303 INFO L225 Difference]: With dead ends: 47 [2020-12-22 19:03:31,303 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 19:03:31,305 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 19:03:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 19:03:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 19:03:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 19:03:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-12-22 19:03:31,315 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 20 [2020-12-22 19:03:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:31,316 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-12-22 19:03:31,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:03:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-12-22 19:03:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:03:31,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:31,317 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:31,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:03:31,318 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:31,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:31,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2110059868, now seen corresponding path program 1 times [2020-12-22 19:03:31,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:31,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311666863] [2020-12-22 19:03:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:31,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311666863] [2020-12-22 19:03:31,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660476530] [2020-12-22 19:03:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:31,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:03:31,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:31,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:31,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 19:03:31,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234823496] [2020-12-22 19:03:31,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:03:31,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:31,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:03:31,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:03:31,621 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-12-22 19:03:31,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:31,778 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2020-12-22 19:03:31,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:03:31,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-22 19:03:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:31,784 INFO L225 Difference]: With dead ends: 133 [2020-12-22 19:03:31,785 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 19:03:31,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:03:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 19:03:31,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 51. [2020-12-22 19:03:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 19:03:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-22 19:03:31,806 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 20 [2020-12-22 19:03:31,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:31,807 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-22 19:03:31,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:03:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-22 19:03:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:03:31,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:31,811 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:32,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:32,027 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:32,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:32,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1143766311, now seen corresponding path program 2 times [2020-12-22 19:03:32,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:32,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293298507] [2020-12-22 19:03:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:32,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293298507] [2020-12-22 19:03:32,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476329487] [2020-12-22 19:03:32,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:32,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:03:32,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:32,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:03:32,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:32,179 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:03:32,179 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:03:32,180 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:32,187 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:32,191 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:32,191 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:14 [2020-12-22 19:03:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:03:32,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:03:32,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2020-12-22 19:03:32,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179383579] [2020-12-22 19:03:32,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:03:32,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:32,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:03:32,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:03:32,298 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 4 states. [2020-12-22 19:03:32,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:32,363 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-12-22 19:03:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:03:32,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-22 19:03:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:32,364 INFO L225 Difference]: With dead ends: 64 [2020-12-22 19:03:32,364 INFO L226 Difference]: Without dead ends: 64 [2020-12-22 19:03:32,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:03:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-22 19:03:32,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2020-12-22 19:03:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 19:03:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-12-22 19:03:32,371 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 24 [2020-12-22 19:03:32,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:32,371 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-12-22 19:03:32,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:03:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-12-22 19:03:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:03:32,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:32,372 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:32,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:32,587 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:32,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:32,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1096967758, now seen corresponding path program 1 times [2020-12-22 19:03:32,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:32,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281027624] [2020-12-22 19:03:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:03:32,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281027624] [2020-12-22 19:03:32,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:03:32,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:03:32,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594805295] [2020-12-22 19:03:32,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:03:32,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:32,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:03:32,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:03:32,632 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 4 states. [2020-12-22 19:03:32,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:32,668 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-22 19:03:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:03:32,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-22 19:03:32,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:32,670 INFO L225 Difference]: With dead ends: 56 [2020-12-22 19:03:32,670 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 19:03:32,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:03:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 19:03:32,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-12-22 19:03:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 19:03:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-12-22 19:03:32,674 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 25 [2020-12-22 19:03:32,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:32,674 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-12-22 19:03:32,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:03:32,674 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-12-22 19:03:32,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:03:32,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:32,675 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:32,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:03:32,676 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:32,676 INFO L82 PathProgramCache]: Analyzing trace with hash -352203591, now seen corresponding path program 1 times [2020-12-22 19:03:32,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:32,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424663068] [2020-12-22 19:03:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:32,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424663068] [2020-12-22 19:03:32,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260454816] [2020-12-22 19:03:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:32,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:03:32,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:32,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:32,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 19:03:32,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869272034] [2020-12-22 19:03:32,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:03:32,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:32,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:03:32,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:03:32,885 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 8 states. [2020-12-22 19:03:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:33,009 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2020-12-22 19:03:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:03:33,009 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-22 19:03:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:33,013 INFO L225 Difference]: With dead ends: 148 [2020-12-22 19:03:33,013 INFO L226 Difference]: Without dead ends: 148 [2020-12-22 19:03:33,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:03:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-22 19:03:33,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 57. [2020-12-22 19:03:33,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-22 19:03:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-12-22 19:03:33,026 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 26 [2020-12-22 19:03:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:33,027 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-12-22 19:03:33,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:03:33,027 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-12-22 19:03:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:03:33,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:33,031 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:33,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:33,245 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:33,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1281757436, now seen corresponding path program 2 times [2020-12-22 19:03:33,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:33,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269894052] [2020-12-22 19:03:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:33,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269894052] [2020-12-22 19:03:33,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433152101] [2020-12-22 19:03:33,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:33,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:03:33,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:33,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:03:33,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:33,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:33,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 19:03:33,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917019595] [2020-12-22 19:03:33,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:03:33,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:33,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:03:33,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:03:33,484 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 9 states. [2020-12-22 19:03:33,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:33,619 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2020-12-22 19:03:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:03:33,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-22 19:03:33,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:33,621 INFO L225 Difference]: With dead ends: 174 [2020-12-22 19:03:33,621 INFO L226 Difference]: Without dead ends: 174 [2020-12-22 19:03:33,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:03:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-22 19:03:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 61. [2020-12-22 19:03:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 19:03:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-12-22 19:03:33,626 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 30 [2020-12-22 19:03:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:33,626 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-12-22 19:03:33,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:03:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-12-22 19:03:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:03:33,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:33,627 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:33,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:33,842 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:33,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:33,843 INFO L82 PathProgramCache]: Analyzing trace with hash 498629567, now seen corresponding path program 3 times [2020-12-22 19:03:33,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:33,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733385756] [2020-12-22 19:03:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:33,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733385756] [2020-12-22 19:03:33,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602762643] [2020-12-22 19:03:33,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:34,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:03:34,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:34,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:03:34,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-22 19:03:34,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:34,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2020-12-22 19:03:34,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155657353] [2020-12-22 19:03:34,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 19:03:34,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:34,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 19:03:34,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:03:34,224 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 15 states. [2020-12-22 19:03:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:34,791 INFO L93 Difference]: Finished difference Result 197 states and 211 transitions. [2020-12-22 19:03:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:03:34,792 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-12-22 19:03:34,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:34,795 INFO L225 Difference]: With dead ends: 197 [2020-12-22 19:03:34,795 INFO L226 Difference]: Without dead ends: 197 [2020-12-22 19:03:34,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=321, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:03:34,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-22 19:03:34,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 62. [2020-12-22 19:03:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 19:03:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-12-22 19:03:34,801 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 34 [2020-12-22 19:03:34,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:34,801 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-12-22 19:03:34,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 19:03:34,801 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-12-22 19:03:34,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 19:03:34,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:34,802 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:35,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 19:03:35,017 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:35,018 INFO L82 PathProgramCache]: Analyzing trace with hash -697671951, now seen corresponding path program 1 times [2020-12-22 19:03:35,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:35,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723069169] [2020-12-22 19:03:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:35,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723069169] [2020-12-22 19:03:35,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846875827] [2020-12-22 19:03:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:35,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:03:35,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:35,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:35,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-22 19:03:35,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794438185] [2020-12-22 19:03:35,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:03:35,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:35,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:03:35,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:03:35,271 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 11 states. [2020-12-22 19:03:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:35,533 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2020-12-22 19:03:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:03:35,536 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-12-22 19:03:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:35,538 INFO L225 Difference]: With dead ends: 224 [2020-12-22 19:03:35,538 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 19:03:35,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:03:35,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 19:03:35,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 66. [2020-12-22 19:03:35,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 19:03:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-12-22 19:03:35,547 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 38 [2020-12-22 19:03:35,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:35,547 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-12-22 19:03:35,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:03:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-12-22 19:03:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 19:03:35,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:35,549 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:35,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:35,765 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:35,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2077447860, now seen corresponding path program 2 times [2020-12-22 19:03:35,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:35,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819638572] [2020-12-22 19:03:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:35,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819638572] [2020-12-22 19:03:35,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902640037] [2020-12-22 19:03:35,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:35,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:03:35,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:35,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:03:35,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-12-22 19:03:36,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:03:36,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2020-12-22 19:03:36,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029460722] [2020-12-22 19:03:36,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:03:36,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:36,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:03:36,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:03:36,060 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 4 states. [2020-12-22 19:03:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:36,112 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-12-22 19:03:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:03:36,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-12-22 19:03:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:36,115 INFO L225 Difference]: With dead ends: 65 [2020-12-22 19:03:36,115 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 19:03:36,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:03:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 19:03:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-22 19:03:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 19:03:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-12-22 19:03:36,118 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 42 [2020-12-22 19:03:36,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:36,119 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-12-22 19:03:36,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:03:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-12-22 19:03:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 19:03:36,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:36,120 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:36,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:36,336 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:36,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:36,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1564990626, now seen corresponding path program 1 times [2020-12-22 19:03:36,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:36,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007261083] [2020-12-22 19:03:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:03:36,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007261083] [2020-12-22 19:03:36,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202822304] [2020-12-22 19:03:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:36,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:03:36,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:03:36,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:36,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-22 19:03:36,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610515342] [2020-12-22 19:03:36,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:03:36,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:36,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:03:36,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:03:36,706 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 12 states. [2020-12-22 19:03:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:36,914 INFO L93 Difference]: Finished difference Result 218 states and 228 transitions. [2020-12-22 19:03:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:03:36,915 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-12-22 19:03:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:36,916 INFO L225 Difference]: With dead ends: 218 [2020-12-22 19:03:36,916 INFO L226 Difference]: Without dead ends: 218 [2020-12-22 19:03:36,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:03:36,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-22 19:03:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 65. [2020-12-22 19:03:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-22 19:03:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-12-22 19:03:36,926 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 45 [2020-12-22 19:03:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:36,926 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-12-22 19:03:36,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:03:36,926 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-12-22 19:03:36,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 19:03:36,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:36,929 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:37,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 19:03:37,143 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:37,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:37,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1246743681, now seen corresponding path program 2 times [2020-12-22 19:03:37,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:37,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289833759] [2020-12-22 19:03:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:03:37,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289833759] [2020-12-22 19:03:37,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615445994] [2020-12-22 19:03:37,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:37,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:03:37,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:37,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:03:37,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:37,400 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:03:37,400 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:03:37,401 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:37,409 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:37,411 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:37,411 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2020-12-22 19:03:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-22 19:03:37,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:37,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3] total 14 [2020-12-22 19:03:37,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362284682] [2020-12-22 19:03:37,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 19:03:37,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 19:03:37,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:03:37,564 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 14 states. [2020-12-22 19:03:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:38,436 INFO L93 Difference]: Finished difference Result 226 states and 237 transitions. [2020-12-22 19:03:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 19:03:38,437 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-12-22 19:03:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:38,440 INFO L225 Difference]: With dead ends: 226 [2020-12-22 19:03:38,440 INFO L226 Difference]: Without dead ends: 226 [2020-12-22 19:03:38,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=376, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:03:38,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-22 19:03:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 117. [2020-12-22 19:03:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-22 19:03:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2020-12-22 19:03:38,445 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 49 [2020-12-22 19:03:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:38,446 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2020-12-22 19:03:38,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 19:03:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2020-12-22 19:03:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 19:03:38,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:38,447 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:38,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 19:03:38,661 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash 248575996, now seen corresponding path program 1 times [2020-12-22 19:03:38,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:38,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978686500] [2020-12-22 19:03:38,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-12-22 19:03:38,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978686500] [2020-12-22 19:03:38,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970437519] [2020-12-22 19:03:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:38,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:03:38,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:03:39,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:39,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14] total 19 [2020-12-22 19:03:39,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006255309] [2020-12-22 19:03:39,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:03:39,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:39,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:03:39,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:03:39,103 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand 19 states. [2020-12-22 19:03:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:39,971 INFO L93 Difference]: Finished difference Result 386 states and 399 transitions. [2020-12-22 19:03:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 19:03:39,972 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-22 19:03:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:39,977 INFO L225 Difference]: With dead ends: 386 [2020-12-22 19:03:39,977 INFO L226 Difference]: Without dead ends: 386 [2020-12-22 19:03:39,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=550, Invalid=1090, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 19:03:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-12-22 19:03:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 123. [2020-12-22 19:03:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-22 19:03:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2020-12-22 19:03:39,993 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 58 [2020-12-22 19:03:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:39,993 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2020-12-22 19:03:39,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:03:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2020-12-22 19:03:39,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 19:03:39,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:39,995 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:40,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 19:03:40,210 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:40,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:40,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1781360740, now seen corresponding path program 1 times [2020-12-22 19:03:40,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:40,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703664518] [2020-12-22 19:03:40,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-12-22 19:03:40,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703664518] [2020-12-22 19:03:40,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970173176] [2020-12-22 19:03:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:40,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 19:03:40,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:03:40,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:40,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15] total 19 [2020-12-22 19:03:40,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553748201] [2020-12-22 19:03:40,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:03:40,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:40,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:03:40,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=200, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:03:40,667 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 19 states. [2020-12-22 19:03:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:41,641 INFO L93 Difference]: Finished difference Result 405 states and 419 transitions. [2020-12-22 19:03:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 19:03:41,642 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-12-22 19:03:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:41,644 INFO L225 Difference]: With dead ends: 405 [2020-12-22 19:03:41,644 INFO L226 Difference]: Without dead ends: 405 [2020-12-22 19:03:41,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=604, Invalid=1202, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 19:03:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-12-22 19:03:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 128. [2020-12-22 19:03:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-22 19:03:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2020-12-22 19:03:41,652 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 63 [2020-12-22 19:03:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:41,652 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2020-12-22 19:03:41,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:03:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2020-12-22 19:03:41,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 19:03:41,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:41,653 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:41,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:41,867 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:41,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1936428859, now seen corresponding path program 1 times [2020-12-22 19:03:41,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:41,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376426051] [2020-12-22 19:03:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:03:42,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376426051] [2020-12-22 19:03:42,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601014768] [2020-12-22 19:03:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:42,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 19:03:42,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:03:42,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:42,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-12-22 19:03:42,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396331065] [2020-12-22 19:03:42,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:03:42,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:42,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:03:42,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:03:42,270 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand 17 states. [2020-12-22 19:03:42,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:42,531 INFO L93 Difference]: Finished difference Result 352 states and 367 transitions. [2020-12-22 19:03:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 19:03:42,532 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-12-22 19:03:42,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:42,535 INFO L225 Difference]: With dead ends: 352 [2020-12-22 19:03:42,536 INFO L226 Difference]: Without dead ends: 352 [2020-12-22 19:03:42,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:03:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-12-22 19:03:42,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 132. [2020-12-22 19:03:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 19:03:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2020-12-22 19:03:42,543 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 70 [2020-12-22 19:03:42,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:42,543 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2020-12-22 19:03:42,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:03:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2020-12-22 19:03:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 19:03:42,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:42,544 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:42,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:42,759 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:42,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:42,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1816814456, now seen corresponding path program 2 times [2020-12-22 19:03:42,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:42,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416496741] [2020-12-22 19:03:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:03:42,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416496741] [2020-12-22 19:03:42,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710865535] [2020-12-22 19:03:42,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:43,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:03:43,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:43,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 19:03:43,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:03:43,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:43,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-12-22 19:03:43,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606801438] [2020-12-22 19:03:43,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 19:03:43,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:43,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 19:03:43,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:03:43,202 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand 18 states. [2020-12-22 19:03:43,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:43,475 INFO L93 Difference]: Finished difference Result 377 states and 393 transitions. [2020-12-22 19:03:43,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:03:43,476 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 74 [2020-12-22 19:03:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:43,478 INFO L225 Difference]: With dead ends: 377 [2020-12-22 19:03:43,479 INFO L226 Difference]: Without dead ends: 377 [2020-12-22 19:03:43,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:03:43,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-12-22 19:03:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 136. [2020-12-22 19:03:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-22 19:03:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2020-12-22 19:03:43,485 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 74 [2020-12-22 19:03:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:43,485 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2020-12-22 19:03:43,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 19:03:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2020-12-22 19:03:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 19:03:43,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:43,486 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:43,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:43,701 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:43,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:43,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1962594613, now seen corresponding path program 3 times [2020-12-22 19:03:43,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:43,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451973375] [2020-12-22 19:03:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:03:43,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451973375] [2020-12-22 19:03:43,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544339657] [2020-12-22 19:03:43,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:44,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:03:44,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:44,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 19:03:44,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:44,173 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-12-22 19:03:44,173 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2020-12-22 19:03:44,175 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:44,181 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:44,182 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:44,183 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-12-22 19:03:44,302 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:44,303 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2020-12-22 19:03:44,309 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:44,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:44,312 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:44,313 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2020-12-22 19:03:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2020-12-22 19:03:44,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:44,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 26 [2020-12-22 19:03:44,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158043127] [2020-12-22 19:03:44,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 19:03:44,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:44,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 19:03:44,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2020-12-22 19:03:44,375 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand 26 states. [2020-12-22 19:03:45,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:45,487 INFO L93 Difference]: Finished difference Result 412 states and 429 transitions. [2020-12-22 19:03:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 19:03:45,487 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 78 [2020-12-22 19:03:45,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:45,490 INFO L225 Difference]: With dead ends: 412 [2020-12-22 19:03:45,490 INFO L226 Difference]: Without dead ends: 412 [2020-12-22 19:03:45,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=812, Invalid=1540, Unknown=0, NotChecked=0, Total=2352 [2020-12-22 19:03:45,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-22 19:03:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 146. [2020-12-22 19:03:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-22 19:03:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 157 transitions. [2020-12-22 19:03:45,499 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 157 transitions. Word has length 78 [2020-12-22 19:03:45,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:45,499 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 157 transitions. [2020-12-22 19:03:45,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 19:03:45,499 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 157 transitions. [2020-12-22 19:03:45,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 19:03:45,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:45,500 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:45,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 19:03:45,714 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:45,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:45,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1916727749, now seen corresponding path program 1 times [2020-12-22 19:03:45,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:45,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246196876] [2020-12-22 19:03:45,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:03:45,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246196876] [2020-12-22 19:03:45,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732232906] [2020-12-22 19:03:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:46,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 19:03:46,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:03:46,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:46,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-12-22 19:03:46,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046146155] [2020-12-22 19:03:46,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 19:03:46,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:46,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 19:03:46,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:03:46,193 INFO L87 Difference]: Start difference. First operand 146 states and 157 transitions. Second operand 20 states. [2020-12-22 19:03:46,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:46,496 INFO L93 Difference]: Finished difference Result 429 states and 447 transitions. [2020-12-22 19:03:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:03:46,496 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 85 [2020-12-22 19:03:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:46,499 INFO L225 Difference]: With dead ends: 429 [2020-12-22 19:03:46,499 INFO L226 Difference]: Without dead ends: 429 [2020-12-22 19:03:46,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:03:46,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-12-22 19:03:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 150. [2020-12-22 19:03:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-22 19:03:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 161 transitions. [2020-12-22 19:03:46,506 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 161 transitions. Word has length 85 [2020-12-22 19:03:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:46,506 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 161 transitions. [2020-12-22 19:03:46,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 19:03:46,506 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 161 transitions. [2020-12-22 19:03:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 19:03:46,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:46,507 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:46,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 19:03:46,719 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:46,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:46,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1830779880, now seen corresponding path program 2 times [2020-12-22 19:03:46,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:46,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520122724] [2020-12-22 19:03:46,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:03:47,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520122724] [2020-12-22 19:03:47,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059754666] [2020-12-22 19:03:47,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:47,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:03:47,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:47,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 19:03:47,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:03:47,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:47,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-22 19:03:47,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044943842] [2020-12-22 19:03:47,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 19:03:47,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:47,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 19:03:47,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:03:47,243 INFO L87 Difference]: Start difference. First operand 150 states and 161 transitions. Second operand 21 states. [2020-12-22 19:03:47,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:47,586 INFO L93 Difference]: Finished difference Result 454 states and 473 transitions. [2020-12-22 19:03:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 19:03:47,587 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 89 [2020-12-22 19:03:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:47,590 INFO L225 Difference]: With dead ends: 454 [2020-12-22 19:03:47,590 INFO L226 Difference]: Without dead ends: 454 [2020-12-22 19:03:47,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:03:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-12-22 19:03:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 154. [2020-12-22 19:03:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-22 19:03:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2020-12-22 19:03:47,597 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 89 [2020-12-22 19:03:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:47,597 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2020-12-22 19:03:47,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 19:03:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2020-12-22 19:03:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 19:03:47,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:47,598 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:47,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 19:03:47,812 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:47,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:47,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1835516789, now seen corresponding path program 3 times [2020-12-22 19:03:47,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:47,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607006951] [2020-12-22 19:03:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 19:03:48,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607006951] [2020-12-22 19:03:48,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414478030] [2020-12-22 19:03:48,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:48,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:03:48,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:48,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:03:48,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2020-12-22 19:03:48,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:48,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 6] total 24 [2020-12-22 19:03:48,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123159631] [2020-12-22 19:03:48,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 19:03:48,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:48,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 19:03:48,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=280, Unknown=0, NotChecked=0, Total=552 [2020-12-22 19:03:48,324 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand 24 states. [2020-12-22 19:03:48,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:48,790 INFO L93 Difference]: Finished difference Result 471 states and 490 transitions. [2020-12-22 19:03:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 19:03:48,791 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 93 [2020-12-22 19:03:48,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:48,794 INFO L225 Difference]: With dead ends: 471 [2020-12-22 19:03:48,794 INFO L226 Difference]: Without dead ends: 462 [2020-12-22 19:03:48,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=280, Unknown=0, NotChecked=0, Total=552 [2020-12-22 19:03:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-12-22 19:03:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 152. [2020-12-22 19:03:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-22 19:03:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2020-12-22 19:03:48,806 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 93 [2020-12-22 19:03:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:48,806 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2020-12-22 19:03:48,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 19:03:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2020-12-22 19:03:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 19:03:48,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:48,814 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:49,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 19:03:49,031 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:49,032 INFO L82 PathProgramCache]: Analyzing trace with hash -5947292, now seen corresponding path program 4 times [2020-12-22 19:03:49,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:49,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708841481] [2020-12-22 19:03:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:03:49,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708841481] [2020-12-22 19:03:49,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485179784] [2020-12-22 19:03:49,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:49,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:03:49,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:49,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 19:03:49,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:03:50,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:50,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-22 19:03:50,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906564226] [2020-12-22 19:03:50,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 19:03:50,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:50,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 19:03:50,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:03:50,094 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand 23 states. [2020-12-22 19:03:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:50,500 INFO L93 Difference]: Finished difference Result 487 states and 507 transitions. [2020-12-22 19:03:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:03:50,501 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 99 [2020-12-22 19:03:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:50,503 INFO L225 Difference]: With dead ends: 487 [2020-12-22 19:03:50,504 INFO L226 Difference]: Without dead ends: 487 [2020-12-22 19:03:50,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:03:50,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-12-22 19:03:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 156. [2020-12-22 19:03:50,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-22 19:03:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2020-12-22 19:03:50,511 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 99 [2020-12-22 19:03:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:50,512 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2020-12-22 19:03:50,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 19:03:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2020-12-22 19:03:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 19:03:50,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:50,513 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:50,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:03:50,729 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:50,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:50,730 INFO L82 PathProgramCache]: Analyzing trace with hash -58806399, now seen corresponding path program 5 times [2020-12-22 19:03:50,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:50,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386004352] [2020-12-22 19:03:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:03:51,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386004352] [2020-12-22 19:03:51,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868036599] [2020-12-22 19:03:51,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:51,919 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-12-22 19:03:51,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:51,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 19:03:51,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:03:52,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:52,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-22 19:03:52,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976476217] [2020-12-22 19:03:52,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 19:03:52,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:52,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 19:03:52,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-12-22 19:03:52,067 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand 24 states. [2020-12-22 19:03:52,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:52,483 INFO L93 Difference]: Finished difference Result 512 states and 533 transitions. [2020-12-22 19:03:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 19:03:52,484 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 103 [2020-12-22 19:03:52,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:52,487 INFO L225 Difference]: With dead ends: 512 [2020-12-22 19:03:52,487 INFO L226 Difference]: Without dead ends: 512 [2020-12-22 19:03:52,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-12-22 19:03:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-12-22 19:03:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 160. [2020-12-22 19:03:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-22 19:03:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions. [2020-12-22 19:03:52,494 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 103 [2020-12-22 19:03:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:52,495 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions. [2020-12-22 19:03:52,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 19:03:52,495 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions. [2020-12-22 19:03:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 19:03:52,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:52,496 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:52,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:52,709 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:52,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:52,710 INFO L82 PathProgramCache]: Analyzing trace with hash 44124190, now seen corresponding path program 6 times [2020-12-22 19:03:52,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:52,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85411193] [2020-12-22 19:03:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:03:53,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85411193] [2020-12-22 19:03:53,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573495650] [2020-12-22 19:03:53,113 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:53,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-22 19:03:53,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:53,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 19:03:53,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:53,349 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:03:53,360 INFO L348 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2020-12-22 19:03:53,361 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2020-12-22 19:03:53,362 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:53,370 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:53,371 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:53,371 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2020-12-22 19:03:53,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:03:53,439 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:53,440 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 37 [2020-12-22 19:03:53,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:53,452 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:53,454 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:53,455 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:18 [2020-12-22 19:03:53,588 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:53,589 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2020-12-22 19:03:53,590 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:53,593 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:53,594 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:53,594 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2020-12-22 19:03:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2020-12-22 19:03:53,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:53,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12] total 34 [2020-12-22 19:03:53,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020233345] [2020-12-22 19:03:53,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-22 19:03:53,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:53,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-22 19:03:53,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=749, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 19:03:53,698 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand 34 states. [2020-12-22 19:04:03,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:03,228 INFO L93 Difference]: Finished difference Result 747 states and 769 transitions. [2020-12-22 19:04:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2020-12-22 19:04:03,231 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 107 [2020-12-22 19:04:03,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:03,235 INFO L225 Difference]: With dead ends: 747 [2020-12-22 19:04:03,236 INFO L226 Difference]: Without dead ends: 747 [2020-12-22 19:04:03,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17136 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=10020, Invalid=30986, Unknown=0, NotChecked=0, Total=41006 [2020-12-22 19:04:03,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-12-22 19:04:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 166. [2020-12-22 19:04:03,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-12-22 19:04:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2020-12-22 19:04:03,258 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 107 [2020-12-22 19:04:03,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:03,258 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2020-12-22 19:04:03,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-22 19:04:03,258 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2020-12-22 19:04:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 19:04:03,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:03,260 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:03,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 19:04:03,475 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:03,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:03,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1507061650, now seen corresponding path program 4 times [2020-12-22 19:04:03,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:03,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484025573] [2020-12-22 19:04:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:04:03,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484025573] [2020-12-22 19:04:03,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480849753] [2020-12-22 19:04:03,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:04,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:04:04,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:04,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:04:04,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2020-12-22 19:04:04,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:04,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7] total 30 [2020-12-22 19:04:04,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934962706] [2020-12-22 19:04:04,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 19:04:04,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:04,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 19:04:04,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=535, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:04:04,314 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand 30 states. [2020-12-22 19:04:08,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:08,105 INFO L93 Difference]: Finished difference Result 870 states and 893 transitions. [2020-12-22 19:04:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-12-22 19:04:08,106 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2020-12-22 19:04:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:08,111 INFO L225 Difference]: With dead ends: 870 [2020-12-22 19:04:08,112 INFO L226 Difference]: Without dead ends: 870 [2020-12-22 19:04:08,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2610, Invalid=6896, Unknown=0, NotChecked=0, Total=9506 [2020-12-22 19:04:08,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-12-22 19:04:08,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 174. [2020-12-22 19:04:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-22 19:04:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 184 transitions. [2020-12-22 19:04:08,125 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 184 transitions. Word has length 114 [2020-12-22 19:04:08,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:08,126 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 184 transitions. [2020-12-22 19:04:08,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 19:04:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 184 transitions. [2020-12-22 19:04:08,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 19:04:08,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:08,127 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:08,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:08,342 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:08,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:08,343 INFO L82 PathProgramCache]: Analyzing trace with hash 347050602, now seen corresponding path program 1 times [2020-12-22 19:04:08,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:08,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544337279] [2020-12-22 19:04:08,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:04:08,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544337279] [2020-12-22 19:04:08,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371064652] [2020-12-22 19:04:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:08,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 19:04:08,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:04:09,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:09,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-22 19:04:09,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708825114] [2020-12-22 19:04:09,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-22 19:04:09,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-22 19:04:09,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:04:09,045 INFO L87 Difference]: Start difference. First operand 174 states and 184 transitions. Second operand 27 states. [2020-12-22 19:04:09,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:09,520 INFO L93 Difference]: Finished difference Result 725 states and 749 transitions. [2020-12-22 19:04:09,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 19:04:09,521 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 119 [2020-12-22 19:04:09,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:09,524 INFO L225 Difference]: With dead ends: 725 [2020-12-22 19:04:09,524 INFO L226 Difference]: Without dead ends: 725 [2020-12-22 19:04:09,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:04:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-12-22 19:04:09,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 178. [2020-12-22 19:04:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-22 19:04:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions. [2020-12-22 19:04:09,532 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 119 [2020-12-22 19:04:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:09,533 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions. [2020-12-22 19:04:09,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-22 19:04:09,533 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions. [2020-12-22 19:04:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 19:04:09,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:09,534 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:09,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 19:04:09,749 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:09,750 INFO L82 PathProgramCache]: Analyzing trace with hash -355512057, now seen corresponding path program 2 times [2020-12-22 19:04:09,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:09,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523010101] [2020-12-22 19:04:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:04:10,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523010101] [2020-12-22 19:04:10,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936505011] [2020-12-22 19:04:10,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:10,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:04:10,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:10,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:04:10,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2020-12-22 19:04:10,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:10,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5] total 31 [2020-12-22 19:04:10,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460763254] [2020-12-22 19:04:10,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-22 19:04:10,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:10,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-22 19:04:10,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=569, Unknown=0, NotChecked=0, Total=930 [2020-12-22 19:04:10,660 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand 31 states. [2020-12-22 19:04:15,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:15,472 INFO L93 Difference]: Finished difference Result 732 states and 757 transitions. [2020-12-22 19:04:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-12-22 19:04:15,472 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 123 [2020-12-22 19:04:15,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:15,480 INFO L225 Difference]: With dead ends: 732 [2020-12-22 19:04:15,480 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 19:04:15,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5262 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4883, Invalid=11629, Unknown=0, NotChecked=0, Total=16512 [2020-12-22 19:04:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 19:04:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 181. [2020-12-22 19:04:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-22 19:04:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 191 transitions. [2020-12-22 19:04:15,490 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 191 transitions. Word has length 123 [2020-12-22 19:04:15,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:15,490 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 191 transitions. [2020-12-22 19:04:15,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-22 19:04:15,490 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 191 transitions. [2020-12-22 19:04:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 19:04:15,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:15,492 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:15,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:15,706 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:15,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1056097030, now seen corresponding path program 1 times [2020-12-22 19:04:15,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:15,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79032755] [2020-12-22 19:04:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 19:04:16,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79032755] [2020-12-22 19:04:16,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871837776] [2020-12-22 19:04:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:16,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 19:04:16,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 19:04:16,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:16,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-12-22 19:04:16,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770556573] [2020-12-22 19:04:16,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-22 19:04:16,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:16,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-22 19:04:16,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-12-22 19:04:16,614 INFO L87 Difference]: Start difference. First operand 181 states and 191 transitions. Second operand 29 states. [2020-12-22 19:04:17,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:17,146 INFO L93 Difference]: Finished difference Result 762 states and 788 transitions. [2020-12-22 19:04:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 19:04:17,146 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 130 [2020-12-22 19:04:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:17,149 INFO L225 Difference]: With dead ends: 762 [2020-12-22 19:04:17,149 INFO L226 Difference]: Without dead ends: 762 [2020-12-22 19:04:17,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-12-22 19:04:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-12-22 19:04:17,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 185. [2020-12-22 19:04:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-22 19:04:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 195 transitions. [2020-12-22 19:04:17,155 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 195 transitions. Word has length 130 [2020-12-22 19:04:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:17,156 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 195 transitions. [2020-12-22 19:04:17,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-22 19:04:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 195 transitions. [2020-12-22 19:04:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 19:04:17,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:17,157 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:17,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 19:04:17,371 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:17,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:17,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1036178883, now seen corresponding path program 2 times [2020-12-22 19:04:17,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:17,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958661346] [2020-12-22 19:04:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 19:04:17,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958661346] [2020-12-22 19:04:17,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110273996] [2020-12-22 19:04:17,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:18,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:04:18,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:18,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 19:04:18,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 19:04:18,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:18,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-12-22 19:04:18,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409910259] [2020-12-22 19:04:18,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 19:04:18,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:18,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 19:04:18,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:04:18,272 INFO L87 Difference]: Start difference. First operand 185 states and 195 transitions. Second operand 30 states. [2020-12-22 19:04:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:18,825 INFO L93 Difference]: Finished difference Result 792 states and 819 transitions. [2020-12-22 19:04:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 19:04:18,826 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 134 [2020-12-22 19:04:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:18,828 INFO L225 Difference]: With dead ends: 792 [2020-12-22 19:04:18,828 INFO L226 Difference]: Without dead ends: 792 [2020-12-22 19:04:18,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:04:18,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-12-22 19:04:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 189. [2020-12-22 19:04:18,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-22 19:04:18,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 199 transitions. [2020-12-22 19:04:18,835 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 199 transitions. Word has length 134 [2020-12-22 19:04:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:18,835 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 199 transitions. [2020-12-22 19:04:18,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 19:04:18,835 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 199 transitions. [2020-12-22 19:04:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 19:04:18,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:18,837 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:19,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:19,052 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:19,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1554072064, now seen corresponding path program 3 times [2020-12-22 19:04:19,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:19,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205147099] [2020-12-22 19:04:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 19:04:19,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205147099] [2020-12-22 19:04:19,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734304785] [2020-12-22 19:04:19,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:19,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 19:04:19,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:19,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 19:04:19,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:19,914 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:04:19,926 INFO L348 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2020-12-22 19:04:19,926 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2020-12-22 19:04:19,928 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:19,939 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:19,940 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:19,941 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2020-12-22 19:04:20,408 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:04:20,435 INFO L348 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2020-12-22 19:04:20,436 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 24 [2020-12-22 19:04:20,438 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:20,448 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:20,450 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:20,451 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:3 [2020-12-22 19:04:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2020-12-22 19:04:20,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:20,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 15] total 43 [2020-12-22 19:04:20,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983348804] [2020-12-22 19:04:20,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-22 19:04:20,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:20,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-22 19:04:20,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=691, Invalid=1115, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 19:04:20,656 INFO L87 Difference]: Start difference. First operand 189 states and 199 transitions. Second operand 43 states. [2020-12-22 19:04:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:23,459 INFO L93 Difference]: Finished difference Result 820 states and 848 transitions. [2020-12-22 19:04:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-22 19:04:23,459 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 138 [2020-12-22 19:04:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:23,463 INFO L225 Difference]: With dead ends: 820 [2020-12-22 19:04:23,463 INFO L226 Difference]: Without dead ends: 820 [2020-12-22 19:04:23,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2336, Invalid=3984, Unknown=0, NotChecked=0, Total=6320 [2020-12-22 19:04:23,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-12-22 19:04:23,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 210. [2020-12-22 19:04:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-22 19:04:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 221 transitions. [2020-12-22 19:04:23,471 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 221 transitions. Word has length 138 [2020-12-22 19:04:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:23,472 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 221 transitions. [2020-12-22 19:04:23,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-22 19:04:23,472 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 221 transitions. [2020-12-22 19:04:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 19:04:23,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:23,474 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:23,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 19:04:23,687 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:23,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:23,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1013807770, now seen corresponding path program 5 times [2020-12-22 19:04:23,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:23,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269442322] [2020-12-22 19:04:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 19:04:24,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269442322] [2020-12-22 19:04:24,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095591864] [2020-12-22 19:04:24,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:25,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2020-12-22 19:04:25,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:25,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 19:04:25,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 19:04:25,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:25,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2020-12-22 19:04:25,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7230525] [2020-12-22 19:04:25,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-22 19:04:25,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:25,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-22 19:04:25,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-12-22 19:04:25,546 INFO L87 Difference]: Start difference. First operand 210 states and 221 transitions. Second operand 32 states. [2020-12-22 19:04:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:26,188 INFO L93 Difference]: Finished difference Result 850 states and 879 transitions. [2020-12-22 19:04:26,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 19:04:26,188 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 145 [2020-12-22 19:04:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:26,191 INFO L225 Difference]: With dead ends: 850 [2020-12-22 19:04:26,191 INFO L226 Difference]: Without dead ends: 850 [2020-12-22 19:04:26,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-12-22 19:04:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-12-22 19:04:26,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 214. [2020-12-22 19:04:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-22 19:04:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 225 transitions. [2020-12-22 19:04:26,198 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 225 transitions. Word has length 145 [2020-12-22 19:04:26,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:26,199 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 225 transitions. [2020-12-22 19:04:26,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-22 19:04:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 225 transitions. [2020-12-22 19:04:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 19:04:26,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:26,201 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:26,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:26,415 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:26,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:26,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1914177987, now seen corresponding path program 6 times [2020-12-22 19:04:26,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:26,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229139871] [2020-12-22 19:04:26,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 19:04:27,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229139871] [2020-12-22 19:04:27,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556772121] [2020-12-22 19:04:27,173 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:27,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-22 19:04:27,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:27,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:04:27,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:27,260 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:04:27,261 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:04:27,262 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:27,271 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:27,272 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:27,272 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2020-12-22 19:04:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2020-12-22 19:04:27,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:27,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 6] total 37 [2020-12-22 19:04:27,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483635889] [2020-12-22 19:04:27,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-22 19:04:27,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:27,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-22 19:04:27,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 19:04:27,986 INFO L87 Difference]: Start difference. First operand 214 states and 225 transitions. Second operand 37 states. [2020-12-22 19:04:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:39,659 INFO L93 Difference]: Finished difference Result 854 states and 884 transitions. [2020-12-22 19:04:39,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-12-22 19:04:39,659 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 149 [2020-12-22 19:04:39,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:39,664 INFO L225 Difference]: With dead ends: 854 [2020-12-22 19:04:39,664 INFO L226 Difference]: Without dead ends: 837 [2020-12-22 19:04:39,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8069 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=7131, Invalid=16739, Unknown=0, NotChecked=0, Total=23870 [2020-12-22 19:04:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-12-22 19:04:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 200. [2020-12-22 19:04:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-22 19:04:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 209 transitions. [2020-12-22 19:04:39,673 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 209 transitions. Word has length 149 [2020-12-22 19:04:39,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:39,674 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 209 transitions. [2020-12-22 19:04:39,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-22 19:04:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 209 transitions. [2020-12-22 19:04:39,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 19:04:39,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:39,675 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:39,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 19:04:39,883 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:39,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:39,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1416335279, now seen corresponding path program 4 times [2020-12-22 19:04:39,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:39,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37360816] [2020-12-22 19:04:39,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1917 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 19:04:40,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37360816] [2020-12-22 19:04:40,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365468667] [2020-12-22 19:04:40,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:42,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:04:42,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:42,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 19:04:42,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1917 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 19:04:42,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:42,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2020-12-22 19:04:42,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053570514] [2020-12-22 19:04:42,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-22 19:04:42,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:42,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-22 19:04:42,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 19:04:42,562 INFO L87 Difference]: Start difference. First operand 200 states and 209 transitions. Second operand 35 states. [2020-12-22 19:04:43,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:43,318 INFO L93 Difference]: Finished difference Result 772 states and 803 transitions. [2020-12-22 19:04:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 19:04:43,319 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 159 [2020-12-22 19:04:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:43,323 INFO L225 Difference]: With dead ends: 772 [2020-12-22 19:04:43,323 INFO L226 Difference]: Without dead ends: 772 [2020-12-22 19:04:43,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 19:04:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-12-22 19:04:43,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 204. [2020-12-22 19:04:43,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-12-22 19:04:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 213 transitions. [2020-12-22 19:04:43,343 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 213 transitions. Word has length 159 [2020-12-22 19:04:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:43,344 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 213 transitions. [2020-12-22 19:04:43,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-22 19:04:43,344 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 213 transitions. [2020-12-22 19:04:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 19:04:43,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:43,345 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:43,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 19:04:43,559 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:43,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:43,560 INFO L82 PathProgramCache]: Analyzing trace with hash -724005394, now seen corresponding path program 5 times [2020-12-22 19:04:43,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:43,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033527415] [2020-12-22 19:04:43,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 19:04:44,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033527415] [2020-12-22 19:04:44,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414779941] [2020-12-22 19:04:44,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:55,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2020-12-22 19:04:55,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:55,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 19:04:55,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 19:04:55,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:55,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2020-12-22 19:04:55,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158733757] [2020-12-22 19:04:55,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-22 19:04:55,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:55,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-22 19:04:55,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 19:04:55,828 INFO L87 Difference]: Start difference. First operand 204 states and 213 transitions. Second operand 36 states. [2020-12-22 19:04:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:56,579 INFO L93 Difference]: Finished difference Result 797 states and 829 transitions. [2020-12-22 19:04:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-22 19:04:56,579 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 163 [2020-12-22 19:04:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:56,582 INFO L225 Difference]: With dead ends: 797 [2020-12-22 19:04:56,582 INFO L226 Difference]: Without dead ends: 797 [2020-12-22 19:04:56,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 19:04:56,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-12-22 19:04:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 208. [2020-12-22 19:04:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-12-22 19:04:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 217 transitions. [2020-12-22 19:04:56,588 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 217 transitions. Word has length 163 [2020-12-22 19:04:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:56,588 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 217 transitions. [2020-12-22 19:04:56,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-22 19:04:56,588 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 217 transitions. [2020-12-22 19:04:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 19:04:56,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:56,589 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:56,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 19:04:56,790 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:56,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:56,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1567266059, now seen corresponding path program 6 times [2020-12-22 19:04:56,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:56,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055118103] [2020-12-22 19:04:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 19:04:57,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055118103] [2020-12-22 19:04:57,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732917488] [2020-12-22 19:04:57,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:57,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-22 19:04:57,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:57,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-22 19:04:57,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:57,913 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_27|]} [2020-12-22 19:04:57,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:57,918 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:04:57,919 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:57,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:57,935 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-22 19:04:57,937 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:57,946 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:57,946 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:57,947 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2020-12-22 19:04:58,207 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2020-12-22 19:04:58,209 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:58,217 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:58,218 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:58,219 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:18 [2020-12-22 19:04:58,428 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2020-12-22 19:04:58,429 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:58,443 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:58,444 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:58,445 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-22 19:04:58,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:58,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:58,544 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2020-12-22 19:04:58,546 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:58,560 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:58,562 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:58,562 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2020-12-22 19:04:58,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:58,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:58,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:58,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:58,649 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2020-12-22 19:04:58,652 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:58,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:58,672 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:58,672 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:56 [2020-12-22 19:04:59,240 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-12-22 19:04:59,243 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:59,248 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:59,249 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:59,249 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:3 [2020-12-22 19:04:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-12-22 19:04:59,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:59,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 23] total 57 [2020-12-22 19:04:59,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799397426] [2020-12-22 19:04:59,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-22 19:04:59,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:59,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-22 19:04:59,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=2041, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 19:04:59,556 INFO L87 Difference]: Start difference. First operand 208 states and 217 transitions. Second operand 57 states. [2020-12-22 19:05:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:04,535 INFO L93 Difference]: Finished difference Result 815 states and 871 transitions. [2020-12-22 19:05:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-12-22 19:05:04,536 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 167 [2020-12-22 19:05:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:04,540 INFO L225 Difference]: With dead ends: 815 [2020-12-22 19:05:04,540 INFO L226 Difference]: Without dead ends: 815 [2020-12-22 19:05:04,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3818, Invalid=7954, Unknown=0, NotChecked=0, Total=11772 [2020-12-22 19:05:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2020-12-22 19:05:04,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 224. [2020-12-22 19:05:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-12-22 19:05:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 233 transitions. [2020-12-22 19:05:04,551 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 233 transitions. Word has length 167 [2020-12-22 19:05:04,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:04,552 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 233 transitions. [2020-12-22 19:05:04,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-22 19:05:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 233 transitions. [2020-12-22 19:05:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-12-22 19:05:04,553 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:04,553 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:04,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-22 19:05:04,766 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:05:04,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:04,768 INFO L82 PathProgramCache]: Analyzing trace with hash 250530360, now seen corresponding path program 7 times [2020-12-22 19:05:04,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:04,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193479053] [2020-12-22 19:05:04,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2458 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-22 19:05:05,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193479053] [2020-12-22 19:05:05,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029676198] [2020-12-22 19:05:05,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:06,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 19:05:06,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2458 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-22 19:05:06,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:06,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2020-12-22 19:05:06,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582329771] [2020-12-22 19:05:06,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-22 19:05:06,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:06,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-22 19:05:06,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 19:05:06,283 INFO L87 Difference]: Start difference. First operand 224 states and 233 transitions. Second operand 39 states. [2020-12-22 19:05:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:07,157 INFO L93 Difference]: Finished difference Result 879 states and 914 transitions. [2020-12-22 19:05:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-22 19:05:07,158 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 180 [2020-12-22 19:05:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:07,161 INFO L225 Difference]: With dead ends: 879 [2020-12-22 19:05:07,161 INFO L226 Difference]: Without dead ends: 879 [2020-12-22 19:05:07,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 19:05:07,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-12-22 19:05:07,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 228. [2020-12-22 19:05:07,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-12-22 19:05:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 237 transitions. [2020-12-22 19:05:07,168 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 237 transitions. Word has length 180 [2020-12-22 19:05:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:07,168 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 237 transitions. [2020-12-22 19:05:07,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-22 19:05:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 237 transitions. [2020-12-22 19:05:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-22 19:05:07,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:07,170 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:07,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-22 19:05:07,384 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:05:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:07,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1101905733, now seen corresponding path program 8 times [2020-12-22 19:05:07,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:07,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126549345] [2020-12-22 19:05:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2599 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-22 19:05:08,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126549345] [2020-12-22 19:05:08,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284317875] [2020-12-22 19:05:08,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:08,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:05:08,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:05:08,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 19:05:08,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2599 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-22 19:05:08,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:08,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2020-12-22 19:05:08,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734313133] [2020-12-22 19:05:08,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-22 19:05:08,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:08,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-22 19:05:08,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 19:05:08,870 INFO L87 Difference]: Start difference. First operand 228 states and 237 transitions. Second operand 40 states. [2020-12-22 19:05:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:09,754 INFO L93 Difference]: Finished difference Result 904 states and 940 transitions. [2020-12-22 19:05:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 19:05:09,754 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 184 [2020-12-22 19:05:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:09,758 INFO L225 Difference]: With dead ends: 904 [2020-12-22 19:05:09,758 INFO L226 Difference]: Without dead ends: 904 [2020-12-22 19:05:09,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 19:05:09,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-12-22 19:05:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 232. [2020-12-22 19:05:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-12-22 19:05:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 241 transitions. [2020-12-22 19:05:09,765 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 241 transitions. Word has length 184 [2020-12-22 19:05:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:09,765 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 241 transitions. [2020-12-22 19:05:09,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-22 19:05:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 241 transitions. [2020-12-22 19:05:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-22 19:05:09,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:09,766 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:09,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-22 19:05:09,967 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:05:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:09,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1975468610, now seen corresponding path program 9 times [2020-12-22 19:05:09,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:09,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481259350] [2020-12-22 19:05:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2744 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-22 19:05:11,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481259350] [2020-12-22 19:05:11,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480078902] [2020-12-22 19:05:11,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:11,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-22 19:05:11,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:05:11,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 19:05:11,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:11,243 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-22 19:05:11,244 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:11,251 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:11,251 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:11,252 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-22 19:05:11,549 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2020-12-22 19:05:11,551 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:11,564 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:11,565 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:11,566 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-22 19:05:11,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:05:11,660 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2020-12-22 19:05:11,661 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:11,676 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:11,677 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:11,678 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:29 [2020-12-22 19:05:11,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:05:11,750 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2020-12-22 19:05:11,751 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:11,766 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:11,769 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:11,770 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2020-12-22 19:05:12,160 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2020-12-22 19:05:12,161 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:12,165 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:12,167 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:12,167 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2020-12-22 19:05:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2744 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2020-12-22 19:05:12,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:12,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 16] total 54 [2020-12-22 19:05:12,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684262302] [2020-12-22 19:05:12,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-12-22 19:05:12,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:12,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-12-22 19:05:12,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=977, Invalid=1885, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 19:05:12,371 INFO L87 Difference]: Start difference. First operand 232 states and 241 transitions. Second operand 54 states. [2020-12-22 19:05:42,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:42,710 INFO L93 Difference]: Finished difference Result 1390 states and 1427 transitions. [2020-12-22 19:05:42,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 332 states. [2020-12-22 19:05:42,711 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 188 [2020-12-22 19:05:42,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:42,714 INFO L225 Difference]: With dead ends: 1390 [2020-12-22 19:05:42,715 INFO L226 Difference]: Without dead ends: 1390 [2020-12-22 19:05:42,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63209 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=31135, Invalid=112127, Unknown=0, NotChecked=0, Total=143262 [2020-12-22 19:05:42,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2020-12-22 19:05:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 235. [2020-12-22 19:05:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-22 19:05:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 244 transitions. [2020-12-22 19:05:42,760 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 244 transitions. Word has length 188 [2020-12-22 19:05:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:42,760 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 244 transitions. [2020-12-22 19:05:42,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-12-22 19:05:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 244 transitions. [2020-12-22 19:05:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-12-22 19:05:42,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:42,763 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:42,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-12-22 19:05:42,964 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:05:42,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:42,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2095452112, now seen corresponding path program 10 times [2020-12-22 19:05:42,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:42,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964502952] [2020-12-22 19:05:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-22 19:05:44,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964502952] [2020-12-22 19:05:44,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717095352] [2020-12-22 19:05:44,227 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:44,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:05:44,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:05:44,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 19:05:44,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:05:44,629 INFO L348 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2020-12-22 19:05:44,630 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-12-22 19:05:44,631 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:44,634 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:44,635 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:44,635 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-12-22 19:05:45,042 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:45,042 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2020-12-22 19:05:45,045 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:05:45,048 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:45,049 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:45,049 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2020-12-22 19:05:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2020-12-22 19:05:45,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:45,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 14] total 52 [2020-12-22 19:05:45,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971608735] [2020-12-22 19:05:45,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-12-22 19:05:45,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:45,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-12-22 19:05:45,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=1692, Unknown=0, NotChecked=0, Total=2652 [2020-12-22 19:05:45,183 INFO L87 Difference]: Start difference. First operand 235 states and 244 transitions. Second operand 52 states. [2020-12-22 19:05:46,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:05:46,920 INFO L93 Difference]: Finished difference Result 1219 states and 1257 transitions. [2020-12-22 19:05:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-12-22 19:05:46,922 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 194 [2020-12-22 19:05:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:05:46,926 INFO L225 Difference]: With dead ends: 1219 [2020-12-22 19:05:46,926 INFO L226 Difference]: Without dead ends: 1219 [2020-12-22 19:05:46,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1520, Invalid=2640, Unknown=0, NotChecked=0, Total=4160 [2020-12-22 19:05:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-12-22 19:05:46,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 247. [2020-12-22 19:05:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-12-22 19:05:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 256 transitions. [2020-12-22 19:05:46,937 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 256 transitions. Word has length 194 [2020-12-22 19:05:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:05:46,937 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 256 transitions. [2020-12-22 19:05:46,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-12-22 19:05:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 256 transitions. [2020-12-22 19:05:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-12-22 19:05:46,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:05:46,939 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:05:47,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:05:47,154 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:05:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:05:47,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1664208648, now seen corresponding path program 11 times [2020-12-22 19:05:47,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:05:47,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985705405] [2020-12-22 19:05:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:05:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:05:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3058 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-22 19:05:48,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985705405] [2020-12-22 19:05:48,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603832275] [2020-12-22 19:05:48,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:06:46,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2020-12-22 19:06:46,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:06:46,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 19:06:46,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:06:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3058 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-22 19:06:46,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:06:46,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2020-12-22 19:06:46,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870723358] [2020-12-22 19:06:46,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-22 19:06:46,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:06:46,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-22 19:06:46,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 19:06:46,509 INFO L87 Difference]: Start difference. First operand 247 states and 256 transitions. Second operand 43 states. [2020-12-22 19:06:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:06:47,685 INFO L93 Difference]: Finished difference Result 1245 states and 1284 transitions. [2020-12-22 19:06:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-22 19:06:47,685 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 203 [2020-12-22 19:06:47,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:06:47,689 INFO L225 Difference]: With dead ends: 1245 [2020-12-22 19:06:47,690 INFO L226 Difference]: Without dead ends: 1245 [2020-12-22 19:06:47,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 19:06:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2020-12-22 19:06:47,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 251. [2020-12-22 19:06:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-12-22 19:06:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 260 transitions. [2020-12-22 19:06:47,697 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 260 transitions. Word has length 203 [2020-12-22 19:06:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:06:47,697 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 260 transitions. [2020-12-22 19:06:47,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-22 19:06:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 260 transitions. [2020-12-22 19:06:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-12-22 19:06:47,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:06:47,699 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:06:47,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:06:47,914 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:06:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:06:47,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1055541979, now seen corresponding path program 12 times [2020-12-22 19:06:47,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:06:47,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981205894] [2020-12-22 19:06:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:06:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:06:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3215 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-22 19:06:49,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981205894] [2020-12-22 19:06:49,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119247465] [2020-12-22 19:06:49,375 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:06:49,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-22 19:06:49,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:06:49,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 19:06:49,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:06:49,637 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-22 19:06:49,639 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:49,645 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:49,646 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:06:49,646 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-22 19:06:50,046 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2020-12-22 19:06:50,048 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:50,062 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:50,063 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:06:50,064 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-22 19:06:50,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:06:50,177 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2020-12-22 19:06:50,180 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:50,231 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:50,232 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:06:50,232 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2020-12-22 19:06:50,746 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2020-12-22 19:06:50,748 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:06:50,752 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:06:50,753 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:06:50,754 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2020-12-22 19:06:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3215 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2020-12-22 19:06:50,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:06:50,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 17] total 58 [2020-12-22 19:06:50,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458376087] [2020-12-22 19:06:50,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-12-22 19:06:50,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:06:50,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-12-22 19:06:50,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=2155, Unknown=0, NotChecked=0, Total=3306 [2020-12-22 19:06:50,987 INFO L87 Difference]: Start difference. First operand 251 states and 260 transitions. Second operand 58 states.