/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-memsafety/openbsd_cstrcmp-alloca-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:00:19,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:00:19,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:00:19,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:00:19,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:00:19,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:00:19,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:00:19,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:00:19,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:00:19,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:00:19,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:00:19,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:00:19,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:00:19,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:00:19,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:00:19,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:00:19,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:00:19,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:00:19,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:00:19,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:00:19,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:00:19,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:00:19,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:00:19,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:00:19,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:00:19,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:00:19,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:00:19,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:00:19,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:00:19,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:00:19,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:00:19,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:00:19,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:00:19,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:00:19,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:00:19,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:00:19,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:00:19,624 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:00:19,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:00:19,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:00:19,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:00:19,628 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:00:19,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:00:19,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:00:19,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:00:19,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:00:19,630 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:00:19,630 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:00:19,630 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:00:19,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:00:19,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:00:19,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:00:19,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:00:19,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:00:19,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:00:19,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:00:19,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:00:19,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:00:19,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:00:19,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:00:19,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:00:19,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:00:20,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:00:20,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:00:20,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:00:20,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:00:20,219 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:00:20,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca-1.i [2020-12-22 19:00:20,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/729f36dec/61c0c9008d2f4b319c062305a71a2dd9/FLAG3bf1ee5fb [2020-12-22 19:00:21,341 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:00:21,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca-1.i [2020-12-22 19:00:21,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/729f36dec/61c0c9008d2f4b319c062305a71a2dd9/FLAG3bf1ee5fb [2020-12-22 19:00:21,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/729f36dec/61c0c9008d2f4b319c062305a71a2dd9 [2020-12-22 19:00:21,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:00:21,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:00:21,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:00:21,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:00:21,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:00:21,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:00:21" (1/1) ... [2020-12-22 19:00:21,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42eddbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:21, skipping insertion in model container [2020-12-22 19:00:21,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:00:21" (1/1) ... [2020-12-22 19:00:21,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:00:21,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:00:22,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:00:22,188 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:00:22,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:00:22,308 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:00:22,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22 WrapperNode [2020-12-22 19:00:22,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:00:22,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:00:22,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:00:22,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:00:22,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (1/1) ... [2020-12-22 19:00:22,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (1/1) ... [2020-12-22 19:00:22,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:00:22,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:00:22,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:00:22,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:00:22,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (1/1) ... [2020-12-22 19:00:22,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (1/1) ... [2020-12-22 19:00:22,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (1/1) ... [2020-12-22 19:00:22,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (1/1) ... [2020-12-22 19:00:22,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (1/1) ... [2020-12-22 19:00:22,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (1/1) ... [2020-12-22 19:00:22,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (1/1) ... [2020-12-22 19:00:22,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:00:22,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:00:22,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:00:22,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:00:22,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (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 19:00:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:00:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:00:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:00:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:00:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:00:22,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:00:23,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:00:23,226 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 19:00:23,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:00:23 BoogieIcfgContainer [2020-12-22 19:00:23,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:00:23,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:00:23,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:00:23,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:00:23,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:00:21" (1/3) ... [2020-12-22 19:00:23,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b93dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:00:23, skipping insertion in model container [2020-12-22 19:00:23,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:22" (2/3) ... [2020-12-22 19:00:23,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b93dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:00:23, skipping insertion in model container [2020-12-22 19:00:23,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:00:23" (3/3) ... [2020-12-22 19:00:23,266 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcmp-alloca-1.i [2020-12-22 19:00:23,287 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:00:23,294 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-12-22 19:00:23,323 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-12-22 19:00:23,372 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:00:23,372 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:00:23,372 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:00:23,372 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:00:23,373 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:00:23,373 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:00:23,373 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:00:23,374 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:00:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-22 19:00:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:00:23,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:23,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:23,419 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:23,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:23,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2020-12-22 19:00:23,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:23,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511674324] [2020-12-22 19:00:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:23,907 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 19:00:23,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511674324] [2020-12-22 19:00:23,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:23,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:23,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591826211] [2020-12-22 19:00:23,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:23,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:23,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:23,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:23,950 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-12-22 19:00:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:24,078 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-12-22 19:00:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:24,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 19:00:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:24,110 INFO L225 Difference]: With dead ends: 92 [2020-12-22 19:00:24,111 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:00:24,113 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 19:00:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:00:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 51. [2020-12-22 19:00:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 19:00:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-22 19:00:24,168 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 7 [2020-12-22 19:00:24,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:24,168 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-22 19:00:24,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-22 19:00:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:00:24,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:24,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:24,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:00:24,171 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:24,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:24,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2020-12-22 19:00:24,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:24,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948074343] [2020-12-22 19:00:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:24,256 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 19:00:24,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948074343] [2020-12-22 19:00:24,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:24,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:00:24,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18630733] [2020-12-22 19:00:24,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:00:24,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:24,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:00:24,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:00:24,267 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 3 states. [2020-12-22 19:00:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:24,368 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-12-22 19:00:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:00:24,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 19:00:24,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:24,374 INFO L225 Difference]: With dead ends: 49 [2020-12-22 19:00:24,375 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 19:00:24,378 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 19:00:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 19:00:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-22 19:00:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 19:00:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-12-22 19:00:24,400 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 7 [2020-12-22 19:00:24,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:24,401 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-12-22 19:00:24,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:00:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-12-22 19:00:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:00:24,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:24,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:24,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:00:24,405 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:24,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:24,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2020-12-22 19:00:24,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:24,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871128279] [2020-12-22 19:00:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:24,519 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 19:00:24,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871128279] [2020-12-22 19:00:24,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:24,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:00:24,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741150395] [2020-12-22 19:00:24,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:24,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:24,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:24,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:24,524 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 4 states. [2020-12-22 19:00:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:24,696 INFO L93 Difference]: Finished difference Result 89 states and 98 transitions. [2020-12-22 19:00:24,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:24,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 19:00:24,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:24,700 INFO L225 Difference]: With dead ends: 89 [2020-12-22 19:00:24,700 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 19:00:24,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:24,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 19:00:24,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 51. [2020-12-22 19:00:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 19:00:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-12-22 19:00:24,710 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 7 [2020-12-22 19:00:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:24,710 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-12-22 19:00:24,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-12-22 19:00:24,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 19:00:24,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:24,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:24,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:00:24,713 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:24,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash -533876960, now seen corresponding path program 1 times [2020-12-22 19:00:24,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:24,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367763637] [2020-12-22 19:00:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:24,794 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 19:00:24,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367763637] [2020-12-22 19:00:24,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:24,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:00:24,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024201584] [2020-12-22 19:00:24,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:24,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:24,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:24,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:24,800 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 4 states. [2020-12-22 19:00:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:24,875 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-12-22 19:00:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:24,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 19:00:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:24,877 INFO L225 Difference]: With dead ends: 50 [2020-12-22 19:00:24,877 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 19:00:24,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 19:00:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 19:00:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-22 19:00:24,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:00:24,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-12-22 19:00:24,884 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 9 [2020-12-22 19:00:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:24,884 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-12-22 19:00:24,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-12-22 19:00:24,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 19:00:24,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:24,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:24,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:00:24,886 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:24,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:24,887 INFO L82 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2020-12-22 19:00:24,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:24,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194348881] [2020-12-22 19:00:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:24,939 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 19:00:24,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194348881] [2020-12-22 19:00:24,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:24,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:24,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701269187] [2020-12-22 19:00:24,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:24,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:24,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:24,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:24,945 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 4 states. [2020-12-22 19:00:24,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:24,990 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2020-12-22 19:00:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:24,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 19:00:24,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:24,997 INFO L225 Difference]: With dead ends: 90 [2020-12-22 19:00:24,998 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:00:24,998 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 19:00:25,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:00:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 61. [2020-12-22 19:00:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 19:00:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2020-12-22 19:00:25,027 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 9 [2020-12-22 19:00:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:25,027 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2020-12-22 19:00:25,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2020-12-22 19:00:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 19:00:25,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:25,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:25,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:00:25,031 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:25,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:25,034 INFO L82 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2020-12-22 19:00:25,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:25,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393037964] [2020-12-22 19:00:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:25,100 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 19:00:25,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393037964] [2020-12-22 19:00:25,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:25,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:00:25,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573422767] [2020-12-22 19:00:25,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:00:25,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:25,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:00:25,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:00:25,103 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 3 states. [2020-12-22 19:00:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:25,151 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-12-22 19:00:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:00:25,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-22 19:00:25,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:25,155 INFO L225 Difference]: With dead ends: 59 [2020-12-22 19:00:25,155 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 19:00:25,157 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 19:00:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 19:00:25,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-22 19:00:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 19:00:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-12-22 19:00:25,179 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 9 [2020-12-22 19:00:25,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:25,179 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-12-22 19:00:25,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:00:25,179 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-12-22 19:00:25,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 19:00:25,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:25,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:25,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:00:25,182 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:25,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:25,182 INFO L82 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2020-12-22 19:00:25,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:25,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560687244] [2020-12-22 19:00:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:25,285 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 19:00:25,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560687244] [2020-12-22 19:00:25,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:25,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:25,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844241264] [2020-12-22 19:00:25,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:25,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:25,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:25,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:25,299 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 5 states. [2020-12-22 19:00:25,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:25,426 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2020-12-22 19:00:25,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:25,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-22 19:00:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:25,428 INFO L225 Difference]: With dead ends: 90 [2020-12-22 19:00:25,429 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:00:25,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:00:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 61. [2020-12-22 19:00:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 19:00:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-12-22 19:00:25,448 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 9 [2020-12-22 19:00:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:25,449 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-12-22 19:00:25,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-12-22 19:00:25,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:00:25,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:25,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:25,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:00:25,451 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:25,452 INFO L82 PathProgramCache]: Analyzing trace with hash 629683418, now seen corresponding path program 1 times [2020-12-22 19:00:25,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:25,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399778223] [2020-12-22 19:00:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:25,575 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 19:00:25,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399778223] [2020-12-22 19:00:25,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:25,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:00:25,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250782042] [2020-12-22 19:00:25,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:25,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:25,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:25,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:25,586 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 4 states. [2020-12-22 19:00:25,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:25,669 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-12-22 19:00:25,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:25,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 19:00:25,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:25,671 INFO L225 Difference]: With dead ends: 60 [2020-12-22 19:00:25,671 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 19:00:25,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 19:00:25,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 19:00:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-22 19:00:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 19:00:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-12-22 19:00:25,679 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 10 [2020-12-22 19:00:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:25,679 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-12-22 19:00:25,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:25,680 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-12-22 19:00:25,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:00:25,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:25,680 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:25,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:00:25,682 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:25,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:25,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2020-12-22 19:00:25,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:25,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574188143] [2020-12-22 19:00:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:25,812 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 19:00:25,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574188143] [2020-12-22 19:00:25,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577611252] [2020-12-22 19:00:25,819 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 19:00:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:25,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 19:00:25,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:25,989 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_30|]} [2020-12-22 19:00:26,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:26,016 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 19:00:26,019 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:26,033 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:26,044 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 19:00:26,057 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:26,067 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:26,071 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:26,071 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-22 19:00:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:26,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:26,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 19:00:26,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523439580] [2020-12-22 19:00:26,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:00:26,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:26,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:00:26,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:26,145 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 6 states. [2020-12-22 19:00:26,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:26,329 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-12-22 19:00:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:26,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 19:00:26,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:26,332 INFO L225 Difference]: With dead ends: 99 [2020-12-22 19:00:26,332 INFO L226 Difference]: Without dead ends: 99 [2020-12-22 19:00:26,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:26,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-22 19:00:26,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 55. [2020-12-22 19:00:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 19:00:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-12-22 19:00:26,346 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 11 [2020-12-22 19:00:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:26,346 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-12-22 19:00:26,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:00:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-12-22 19:00:26,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:00:26,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:26,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:26,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 19:00:26,569 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:26,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:26,570 INFO L82 PathProgramCache]: Analyzing trace with hash -464624129, now seen corresponding path program 1 times [2020-12-22 19:00:26,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:26,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586783846] [2020-12-22 19:00:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:26,699 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 19:00:26,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586783846] [2020-12-22 19:00:26,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:26,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:26,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668733400] [2020-12-22 19:00:26,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:00:26,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:26,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:00:26,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:26,703 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 6 states. [2020-12-22 19:00:26,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:26,797 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-12-22 19:00:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:26,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 19:00:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:26,798 INFO L225 Difference]: With dead ends: 72 [2020-12-22 19:00:26,798 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 19:00:26,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:00:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 19:00:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2020-12-22 19:00:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 19:00:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2020-12-22 19:00:26,802 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 12 [2020-12-22 19:00:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:26,802 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2020-12-22 19:00:26,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:00:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2020-12-22 19:00:26,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:00:26,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:26,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:26,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:00:26,804 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:26,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:26,804 INFO L82 PathProgramCache]: Analyzing trace with hash -464624130, now seen corresponding path program 1 times [2020-12-22 19:00:26,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:26,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403812266] [2020-12-22 19:00:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:26,836 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 19:00:26,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403812266] [2020-12-22 19:00:26,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:26,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:00:26,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315708405] [2020-12-22 19:00:26,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:26,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:26,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:26,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:26,839 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand 4 states. [2020-12-22 19:00:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:26,886 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-12-22 19:00:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:26,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 19:00:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:26,888 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:00:26,888 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 19:00:26,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 19:00:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-22 19:00:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 19:00:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-12-22 19:00:26,892 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 12 [2020-12-22 19:00:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:26,892 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-12-22 19:00:26,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:26,892 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-12-22 19:00:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:00:26,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:26,893 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:26,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:00:26,894 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:26,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:26,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2020-12-22 19:00:26,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:26,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220619438] [2020-12-22 19:00:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:26,974 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 19:00:26,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220619438] [2020-12-22 19:00:26,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984090193] [2020-12-22 19:00:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:27,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:00:27,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:27,059 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:27,060 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 25 [2020-12-22 19:00:27,063 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:27,082 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:00:27,085 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:27,086 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-22 19:00:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:27,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:27,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 19:00:27,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427420663] [2020-12-22 19:00:27,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:00:27,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:00:27,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:27,132 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 7 states. [2020-12-22 19:00:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:27,275 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2020-12-22 19:00:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:00:27,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-22 19:00:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:27,276 INFO L225 Difference]: With dead ends: 88 [2020-12-22 19:00:27,276 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:00:27,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:00:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:00:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 55. [2020-12-22 19:00:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 19:00:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-12-22 19:00:27,280 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 13 [2020-12-22 19:00:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:27,281 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-12-22 19:00:27,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:00:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-12-22 19:00:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:00:27,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:27,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:27,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 19:00:27,497 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:27,499 INFO L82 PathProgramCache]: Analyzing trace with hash 172810975, now seen corresponding path program 1 times [2020-12-22 19:00:27,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:27,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362580545] [2020-12-22 19:00:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:27,563 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 19:00:27,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362580545] [2020-12-22 19:00:27,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:27,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:27,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709358464] [2020-12-22 19:00:27,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:27,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:27,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:27,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:27,567 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 5 states. [2020-12-22 19:00:27,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:27,647 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-12-22 19:00:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:27,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 19:00:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:27,648 INFO L225 Difference]: With dead ends: 54 [2020-12-22 19:00:27,649 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 19:00:27,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:27,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 19:00:27,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-22 19:00:27,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 19:00:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-12-22 19:00:27,654 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 14 [2020-12-22 19:00:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:27,657 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-12-22 19:00:27,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-12-22 19:00:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:00:27,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:27,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:27,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:00:27,662 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:27,663 INFO L82 PathProgramCache]: Analyzing trace with hash 172810976, now seen corresponding path program 1 times [2020-12-22 19:00:27,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:27,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451992786] [2020-12-22 19:00:27,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:27,791 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 19:00:27,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451992786] [2020-12-22 19:00:27,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:27,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:00:27,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792198413] [2020-12-22 19:00:27,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:00:27,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:27,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:00:27,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:27,798 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 7 states. [2020-12-22 19:00:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:27,907 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2020-12-22 19:00:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:00:27,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-12-22 19:00:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:27,908 INFO L225 Difference]: With dead ends: 54 [2020-12-22 19:00:27,909 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 19:00:27,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:00:27,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 19:00:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-22 19:00:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 19:00:27,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-12-22 19:00:27,913 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 14 [2020-12-22 19:00:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:27,914 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-12-22 19:00:27,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:00:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-12-22 19:00:27,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:00:27,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:27,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:27,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:00:27,916 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:27,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:27,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1432376192, now seen corresponding path program 1 times [2020-12-22 19:00:27,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:27,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420217784] [2020-12-22 19:00:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:27,954 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 19:00:27,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420217784] [2020-12-22 19:00:27,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:27,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:00:27,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163345470] [2020-12-22 19:00:27,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:27,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:27,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:27,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:27,958 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2020-12-22 19:00:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:28,005 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-12-22 19:00:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:28,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-22 19:00:28,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:28,006 INFO L225 Difference]: With dead ends: 53 [2020-12-22 19:00:28,006 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 19:00:28,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:28,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 19:00:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-22 19:00:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 19:00:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-12-22 19:00:28,012 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 16 [2020-12-22 19:00:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:28,012 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-12-22 19:00:28,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-12-22 19:00:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:00:28,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:28,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:28,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:00:28,014 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:28,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:28,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1432376191, now seen corresponding path program 1 times [2020-12-22 19:00:28,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:28,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860658116] [2020-12-22 19:00:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:28,096 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 19:00:28,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860658116] [2020-12-22 19:00:28,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:28,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:00:28,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834593148] [2020-12-22 19:00:28,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:00:28,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:28,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:00:28,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:28,099 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 7 states. [2020-12-22 19:00:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:28,214 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2020-12-22 19:00:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:00:28,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 19:00:28,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:28,216 INFO L225 Difference]: With dead ends: 63 [2020-12-22 19:00:28,216 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 19:00:28,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:00:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 19:00:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2020-12-22 19:00:28,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 19:00:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-12-22 19:00:28,225 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 16 [2020-12-22 19:00:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:28,225 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-12-22 19:00:28,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:00:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-12-22 19:00:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:00:28,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:28,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:28,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:00:28,228 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:28,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:28,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2124032946, now seen corresponding path program 1 times [2020-12-22 19:00:28,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:28,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339706604] [2020-12-22 19:00:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:28,309 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 19:00:28,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339706604] [2020-12-22 19:00:28,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:28,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:28,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881707433] [2020-12-22 19:00:28,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:28,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:28,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:28,313 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 5 states. [2020-12-22 19:00:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:28,392 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-12-22 19:00:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:28,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 19:00:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:28,393 INFO L225 Difference]: With dead ends: 53 [2020-12-22 19:00:28,393 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 19:00:28,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 19:00:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-22 19:00:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 19:00:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-12-22 19:00:28,396 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 18 [2020-12-22 19:00:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:28,397 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-12-22 19:00:28,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-12-22 19:00:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:00:28,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:28,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:28,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:00:28,398 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:28,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:28,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2124032945, now seen corresponding path program 1 times [2020-12-22 19:00:28,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:28,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646353669] [2020-12-22 19:00:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:28,508 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 19:00:28,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646353669] [2020-12-22 19:00:28,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:28,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:00:28,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207557553] [2020-12-22 19:00:28,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:00:28,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:28,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:00:28,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:00:28,511 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 9 states. [2020-12-22 19:00:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:28,649 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-12-22 19:00:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:00:28,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-22 19:00:28,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:28,650 INFO L225 Difference]: With dead ends: 62 [2020-12-22 19:00:28,651 INFO L226 Difference]: Without dead ends: 62 [2020-12-22 19:00:28,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:00:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-22 19:00:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2020-12-22 19:00:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 19:00:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-12-22 19:00:28,654 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 18 [2020-12-22 19:00:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:28,654 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-12-22 19:00:28,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:00:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-12-22 19:00:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:00:28,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:28,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:28,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:00:28,655 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:28,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:28,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2123984178, now seen corresponding path program 1 times [2020-12-22 19:00:28,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:28,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29649482] [2020-12-22 19:00:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:28,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29649482] [2020-12-22 19:00:28,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:28,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:00:28,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248982194] [2020-12-22 19:00:28,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:00:28,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:28,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:00:28,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:00:28,758 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 8 states. [2020-12-22 19:00:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:28,914 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2020-12-22 19:00:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:00:28,914 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-22 19:00:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:28,915 INFO L225 Difference]: With dead ends: 81 [2020-12-22 19:00:28,915 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 19:00:28,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:00:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 19:00:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2020-12-22 19:00:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-22 19:00:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2020-12-22 19:00:28,922 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 18 [2020-12-22 19:00:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:28,923 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2020-12-22 19:00:28,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:00:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2020-12-22 19:00:28,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:00:28,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:28,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:28,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 19:00:28,924 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:28,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:28,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1149914764, now seen corresponding path program 1 times [2020-12-22 19:00:28,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:28,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207051187] [2020-12-22 19:00:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:29,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207051187] [2020-12-22 19:00:29,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:29,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 19:00:29,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348613051] [2020-12-22 19:00:29,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:00:29,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:29,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:00:29,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:00:29,132 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand 9 states. [2020-12-22 19:00:29,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:29,323 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-12-22 19:00:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:00:29,323 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-22 19:00:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:29,324 INFO L225 Difference]: With dead ends: 105 [2020-12-22 19:00:29,325 INFO L226 Difference]: Without dead ends: 105 [2020-12-22 19:00:29,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:00:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-22 19:00:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2020-12-22 19:00:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 19:00:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-12-22 19:00:29,328 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 18 [2020-12-22 19:00:29,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:29,328 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-12-22 19:00:29,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:00:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-12-22 19:00:29,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:00:29,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:29,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:29,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:00:29,330 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:29,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:29,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1419000974, now seen corresponding path program 1 times [2020-12-22 19:00:29,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:29,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158338542] [2020-12-22 19:00:29,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:29,385 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 19:00:29,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158338542] [2020-12-22 19:00:29,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:29,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:00:29,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142905396] [2020-12-22 19:00:29,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:29,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:29,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:29,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:29,388 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 4 states. [2020-12-22 19:00:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:29,413 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-12-22 19:00:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:29,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-22 19:00:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:29,414 INFO L225 Difference]: With dead ends: 72 [2020-12-22 19:00:29,414 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 19:00:29,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 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 19:00:29,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 19:00:29,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-22 19:00:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:00:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-12-22 19:00:29,416 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 19 [2020-12-22 19:00:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:29,417 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-12-22 19:00:29,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-12-22 19:00:29,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:00:29,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:29,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:29,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 19:00:29,418 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:29,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:29,418 INFO L82 PathProgramCache]: Analyzing trace with hash 453336425, now seen corresponding path program 1 times [2020-12-22 19:00:29,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:29,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350393006] [2020-12-22 19:00:29,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:29,536 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 19:00:29,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350393006] [2020-12-22 19:00:29,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356448880] [2020-12-22 19:00:29,537 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 19:00:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:29,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 19:00:29,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:29,614 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_31|]} [2020-12-22 19:00:29,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:29,620 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 19:00:29,621 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:29,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:29,635 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 19:00:29,636 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:29,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:29,647 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:29,647 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-22 19:00:29,787 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 19:00:29,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:29,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2020-12-22 19:00:29,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207408875] [2020-12-22 19:00:29,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 19:00:29,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:29,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 19:00:29,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:00:29,789 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-12-22 19:00:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:30,135 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-12-22 19:00:30,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:00:30,136 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-12-22 19:00:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:30,137 INFO L225 Difference]: With dead ends: 61 [2020-12-22 19:00:30,137 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 19:00:30,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:00:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 19:00:30,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2020-12-22 19:00:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 19:00:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-22 19:00:30,139 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 22 [2020-12-22 19:00:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:30,140 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-22 19:00:30,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 19:00:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-22 19:00:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:00:30,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:30,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:30,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 19:00:30,355 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:30,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1864607690, now seen corresponding path program 1 times [2020-12-22 19:00:30,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:30,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901792793] [2020-12-22 19:00:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:30,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901792793] [2020-12-22 19:00:30,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:30,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 19:00:30,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046163809] [2020-12-22 19:00:30,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:00:30,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:30,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:00:30,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:00:30,528 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 11 states. [2020-12-22 19:00:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:30,732 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-12-22 19:00:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:00:30,732 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-12-22 19:00:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:30,733 INFO L225 Difference]: With dead ends: 60 [2020-12-22 19:00:30,733 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 19:00:30,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:00:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 19:00:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-22 19:00:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 19:00:30,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-22 19:00:30,736 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 24 [2020-12-22 19:00:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:30,736 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-22 19:00:30,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:00:30,736 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-22 19:00:30,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:00:30,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:30,737 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:30,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 19:00:30,737 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:30,737 INFO L82 PathProgramCache]: Analyzing trace with hash -2007657780, now seen corresponding path program 1 times [2020-12-22 19:00:30,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:30,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171026713] [2020-12-22 19:00:30,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:30,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171026713] [2020-12-22 19:00:30,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:30,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 19:00:30,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265884977] [2020-12-22 19:00:30,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:00:30,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:30,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:00:30,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:00:30,975 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-12-22 19:00:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:31,236 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-22 19:00:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:00:31,236 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-12-22 19:00:31,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:31,237 INFO L225 Difference]: With dead ends: 56 [2020-12-22 19:00:31,237 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 19:00:31,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:00:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 19:00:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-22 19:00:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 19:00:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-12-22 19:00:31,240 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 24 [2020-12-22 19:00:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:31,240 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-12-22 19:00:31,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:00:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-12-22 19:00:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:00:31,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:31,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:31,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 19:00:31,241 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:31,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:31,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2045741993, now seen corresponding path program 1 times [2020-12-22 19:00:31,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:31,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411976306] [2020-12-22 19:00:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:31,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411976306] [2020-12-22 19:00:31,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496184605] [2020-12-22 19:00:31,357 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 19:00:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:31,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 19:00:31,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:31,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:31,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2020-12-22 19:00:31,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878761055] [2020-12-22 19:00:31,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 19:00:31,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:31,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 19:00:31,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:00:31,548 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 16 states. [2020-12-22 19:00:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:31,839 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-12-22 19:00:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:00:31,839 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2020-12-22 19:00:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:31,840 INFO L225 Difference]: With dead ends: 47 [2020-12-22 19:00:31,840 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 19:00:31,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:00:31,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 19:00:31,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-22 19:00:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 19:00:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-12-22 19:00:31,842 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 28 [2020-12-22 19:00:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:31,842 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-12-22 19:00:31,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 19:00:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-12-22 19:00:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:00:31,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:31,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:32,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:32,056 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:32,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1136965878, now seen corresponding path program 1 times [2020-12-22 19:00:32,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:32,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662573009] [2020-12-22 19:00:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:32,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:32,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662573009] [2020-12-22 19:00:32,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164442380] [2020-12-22 19:00:32,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:00:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:32,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 19:00:32,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:32,259 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_25|], 1=[|v_#valid_32|]} [2020-12-22 19:00:32,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:32,264 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 19:00:32,265 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:32,273 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:32,277 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 19:00:32,280 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:32,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:32,289 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:32,290 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-22 19:00:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:32,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:32,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2020-12-22 19:00:32,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318957777] [2020-12-22 19:00:32,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 19:00:32,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:32,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 19:00:32,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:00:32,450 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 16 states. [2020-12-22 19:00:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:32,878 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-12-22 19:00:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:00:32,879 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2020-12-22 19:00:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:32,880 INFO L225 Difference]: With dead ends: 52 [2020-12-22 19:00:32,880 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 19:00:32,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:00:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 19:00:32,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-12-22 19:00:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:00:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-12-22 19:00:32,882 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 30 [2020-12-22 19:00:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:32,882 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-12-22 19:00:32,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 19:00:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-12-22 19:00:32,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:00:32,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:32,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:33,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 19:00:33,090 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:33,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1702563688, now seen corresponding path program 1 times [2020-12-22 19:00:33,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:33,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522877624] [2020-12-22 19:00:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:33,240 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 19:00:33,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522877624] [2020-12-22 19:00:33,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834086227] [2020-12-22 19:00:33,241 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 19:00:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:33,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 19:00:33,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:33,455 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 19:00:33,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:33,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2020-12-22 19:00:33,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884248890] [2020-12-22 19:00:33,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:00:33,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:33,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:00:33,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:00:33,463 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 17 states. [2020-12-22 19:00:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:33,867 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-12-22 19:00:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:00:33,868 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2020-12-22 19:00:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:33,868 INFO L225 Difference]: With dead ends: 54 [2020-12-22 19:00:33,868 INFO L226 Difference]: Without dead ends: 51 [2020-12-22 19:00:33,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:00:33,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-22 19:00:33,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2020-12-22 19:00:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 19:00:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-12-22 19:00:33,871 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 32 [2020-12-22 19:00:33,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:33,871 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-12-22 19:00:33,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:00:33,871 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-12-22 19:00:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:00:33,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:33,872 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:34,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:34,085 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:34,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:34,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1702514921, now seen corresponding path program 1 times [2020-12-22 19:00:34,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:34,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976032903] [2020-12-22 19:00:34,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:34,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976032903] [2020-12-22 19:00:34,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742371713] [2020-12-22 19:00:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:00:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:34,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-22 19:00:34,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:34,612 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-22 19:00:34,613 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:34,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:34,623 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:34,623 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-12-22 19:00:35,182 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:35,183 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 48 [2020-12-22 19:00:35,186 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:35,200 INFO L625 ElimStorePlain]: treesize reduction 19, result has 34.5 percent of original size [2020-12-22 19:00:35,203 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 19:00:35,203 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:3 [2020-12-22 19:00:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:35,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:35,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 25 [2020-12-22 19:00:35,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212709469] [2020-12-22 19:00:35,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 19:00:35,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:35,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 19:00:35,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:00:35,213 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 25 states. [2020-12-22 19:00:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:37,451 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2020-12-22 19:00:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-22 19:00:37,451 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2020-12-22 19:00:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:37,452 INFO L225 Difference]: With dead ends: 116 [2020-12-22 19:00:37,452 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 19:00:37,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=460, Invalid=2620, Unknown=0, NotChecked=0, Total=3080 [2020-12-22 19:00:37,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 19:00:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-12-22 19:00:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 19:00:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-12-22 19:00:37,456 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 32 [2020-12-22 19:00:37,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:37,456 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-12-22 19:00:37,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 19:00:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-12-22 19:00:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:00:37,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:37,457 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:37,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 19:00:37,673 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:37,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2071618671, now seen corresponding path program 2 times [2020-12-22 19:00:37,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:37,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695939921] [2020-12-22 19:00:37,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:37,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695939921] [2020-12-22 19:00:37,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273366286] [2020-12-22 19:00:37,849 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 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 19:00:37,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:00:37,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:37,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 19:00:37,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:38,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:38,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2020-12-22 19:00:38,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662481334] [2020-12-22 19:00:38,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:00:38,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:38,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:00:38,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:00:38,116 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 17 states. [2020-12-22 19:00:38,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:38,462 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-12-22 19:00:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:00:38,462 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-12-22 19:00:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:38,463 INFO L225 Difference]: With dead ends: 62 [2020-12-22 19:00:38,463 INFO L226 Difference]: Without dead ends: 62 [2020-12-22 19:00:38,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2020-12-22 19:00:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-22 19:00:38,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-12-22 19:00:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 19:00:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-12-22 19:00:38,468 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 40 [2020-12-22 19:00:38,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:38,469 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-12-22 19:00:38,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:00:38,469 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-12-22 19:00:38,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 19:00:38,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:38,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:38,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 19:00:38,678 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:38,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:38,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2039282674, now seen corresponding path program 2 times [2020-12-22 19:00:38,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:38,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580170008] [2020-12-22 19:00:38,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:38,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580170008] [2020-12-22 19:00:38,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084228753] [2020-12-22 19:00:38,864 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 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 19:00:38,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:00:38,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:38,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 19:00:38,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:38,959 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:38,960 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 25 [2020-12-22 19:00:38,963 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:38,979 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:00:38,983 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:38,983 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-22 19:00:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:39,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:39,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2020-12-22 19:00:39,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170272007] [2020-12-22 19:00:39,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 19:00:39,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:39,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 19:00:39,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:00:39,179 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 21 states. [2020-12-22 19:00:39,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:39,555 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-22 19:00:39,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:00:39,555 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2020-12-22 19:00:39,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:39,556 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:00:39,556 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 19:00:39,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:00:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 19:00:39,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-22 19:00:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 19:00:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-12-22 19:00:39,567 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 42 [2020-12-22 19:00:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:39,568 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-12-22 19:00:39,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 19:00:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-12-22 19:00:39,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 19:00:39,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:39,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:39,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:39,782 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:39,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:39,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1245563155, now seen corresponding path program 2 times [2020-12-22 19:00:39,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:39,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571694958] [2020-12-22 19:00:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:40,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571694958] [2020-12-22 19:00:40,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920931396] [2020-12-22 19:00:40,020 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 19:00:40,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:00:40,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:40,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:00:40,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 19:00:40,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:00:40,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2020-12-22 19:00:40,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661279011] [2020-12-22 19:00:40,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:40,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:40,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:40,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:00:40,158 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 4 states. [2020-12-22 19:00:40,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:40,194 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-22 19:00:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:40,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 19:00:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:40,196 INFO L225 Difference]: With dead ends: 56 [2020-12-22 19:00:40,196 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 19:00:40,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:00:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 19:00:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-12-22 19:00:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 19:00:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-12-22 19:00:40,200 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 44 [2020-12-22 19:00:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:40,201 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-12-22 19:00:40,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-12-22 19:00:40,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 19:00:40,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:40,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:40,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:40,412 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:40,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:40,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1309731743, now seen corresponding path program 2 times [2020-12-22 19:00:40,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:40,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602471763] [2020-12-22 19:00:40,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:40,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602471763] [2020-12-22 19:00:40,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350369680] [2020-12-22 19:00:40,591 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 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 19:00:40,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:00:40,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:40,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:00:40,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 19:00:40,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:00:40,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2020-12-22 19:00:40,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265148310] [2020-12-22 19:00:40,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:40,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:40,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:40,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:00:40,747 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 5 states. [2020-12-22 19:00:40,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:40,813 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-12-22 19:00:40,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:00:40,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-22 19:00:40,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:40,814 INFO L225 Difference]: With dead ends: 53 [2020-12-22 19:00:40,814 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 19:00:40,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:00:40,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 19:00:40,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-22 19:00:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:00:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-12-22 19:00:40,817 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 46 [2020-12-22 19:00:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:40,817 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-12-22 19:00:40,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-12-22 19:00:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 19:00:40,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:40,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:41,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-12-22 19:00:41,030 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:41,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1309682976, now seen corresponding path program 3 times [2020-12-22 19:00:41,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:41,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682344639] [2020-12-22 19:00:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:41,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682344639] [2020-12-22 19:00:41,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982644576] [2020-12-22 19:00:41,321 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 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 19:00:41,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 19:00:41,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:41,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 79 conjunts are in the unsatisfiable core [2020-12-22 19:00:41,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:41,638 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-22 19:00:41,638 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:41,647 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:41,652 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:41,652 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-12-22 19:00:42,277 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:42,278 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 48 [2020-12-22 19:00:42,283 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:42,297 INFO L625 ElimStorePlain]: treesize reduction 19, result has 34.5 percent of original size [2020-12-22 19:00:42,299 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 19:00:42,299 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:3 [2020-12-22 19:00:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:42,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:42,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 30 [2020-12-22 19:00:42,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339250280] [2020-12-22 19:00:42,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 19:00:42,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:42,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 19:00:42,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:00:42,316 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 30 states. [2020-12-22 19:00:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:45,181 INFO L93 Difference]: Finished difference Result 144 states and 147 transitions. [2020-12-22 19:00:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-12-22 19:00:45,181 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 46 [2020-12-22 19:00:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:45,182 INFO L225 Difference]: With dead ends: 144 [2020-12-22 19:00:45,182 INFO L226 Difference]: Without dead ends: 64 [2020-12-22 19:00:45,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=576, Invalid=4116, Unknown=0, NotChecked=0, Total=4692 [2020-12-22 19:00:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-22 19:00:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-12-22 19:00:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 19:00:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-12-22 19:00:45,186 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 46 [2020-12-22 19:00:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:45,187 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-12-22 19:00:45,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 19:00:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-12-22 19:00:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 19:00:45,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:45,188 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:45,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:45,401 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:45,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1724661286, now seen corresponding path program 4 times [2020-12-22 19:00:45,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:45,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932941987] [2020-12-22 19:00:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:00:45,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932941987] [2020-12-22 19:00:45,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75577241] [2020-12-22 19:00:45,589 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 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 19:00:45,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:00:45,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:45,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-22 19:00:45,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:45,684 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_27|], 1=[|v_#valid_33|]} [2020-12-22 19:00:45,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:45,688 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 19:00:45,689 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:45,696 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:45,711 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 19:00:45,712 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:45,719 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:45,720 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:45,720 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2020-12-22 19:00:45,897 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 12 [2020-12-22 19:00:45,898 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:45,907 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:45,908 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:45,908 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2020-12-22 19:00:45,948 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 29 treesize of output 28 [2020-12-22 19:00:45,950 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:45,958 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:45,960 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:45,960 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:39 [2020-12-22 19:00:46,388 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:46,388 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2020-12-22 19:00:46,390 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:00:46,399 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:46,401 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 19:00:46,401 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:19 [2020-12-22 19:00:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:00:46,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:46,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2020-12-22 19:00:46,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22696759] [2020-12-22 19:00:46,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 19:00:46,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:46,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 19:00:46,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2020-12-22 19:00:46,513 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 26 states. [2020-12-22 19:00:48,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:48,007 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-12-22 19:00:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:00:48,008 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 54 [2020-12-22 19:00:48,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:48,008 INFO L225 Difference]: With dead ends: 66 [2020-12-22 19:00:48,009 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 19:00:48,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 19:00:48,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 19:00:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-12-22 19:00:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 19:00:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-12-22 19:00:48,012 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 54 [2020-12-22 19:00:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:48,012 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-12-22 19:00:48,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 19:00:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-12-22 19:00:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 19:00:48,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:48,013 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:48,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-22 19:00:48,217 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:48,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:48,218 INFO L82 PathProgramCache]: Analyzing trace with hash 457880571, now seen corresponding path program 3 times [2020-12-22 19:00:48,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:48,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011591610] [2020-12-22 19:00:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:00:48,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011591610] [2020-12-22 19:00:48,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130361552] [2020-12-22 19:00:48,417 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 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 19:00:48,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 19:00:48,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:48,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 19:00:48,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:48,534 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:48,534 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 25 [2020-12-22 19:00:48,536 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:48,552 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:00:48,554 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:48,554 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-22 19:00:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:00:48,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:48,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2020-12-22 19:00:48,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907977661] [2020-12-22 19:00:48,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 19:00:48,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:48,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 19:00:48,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:00:48,858 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 25 states. [2020-12-22 19:00:49,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:49,578 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-12-22 19:00:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:00:49,579 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 56 [2020-12-22 19:00:49,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:49,580 INFO L225 Difference]: With dead ends: 65 [2020-12-22 19:00:49,580 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 19:00:49,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 19:00:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 19:00:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-22 19:00:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 19:00:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-12-22 19:00:49,583 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 56 [2020-12-22 19:00:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:49,583 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-12-22 19:00:49,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 19:00:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-12-22 19:00:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 19:00:49,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:49,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:49,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:49,790 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:49,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:49,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1318084201, now seen corresponding path program 5 times [2020-12-22 19:00:49,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:49,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644500505] [2020-12-22 19:00:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:00:50,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644500505] [2020-12-22 19:00:50,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849226165] [2020-12-22 19:00:50,078 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 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 19:00:50,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-22 19:00:50,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:50,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 65 conjunts are in the unsatisfiable core [2020-12-22 19:00:50,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:50,204 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 19:00:50,205 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:50,208 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:50,209 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:50,209 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-22 19:00:50,378 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-12-22 19:00:50,379 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:50,385 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:50,387 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:50,387 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-22 19:00:50,432 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 25 treesize of output 24 [2020-12-22 19:00:50,433 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:50,442 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:50,444 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:50,444 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:31 [2020-12-22 19:00:50,974 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:50,974 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2020-12-22 19:00:50,976 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:00:50,989 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2020-12-22 19:00:50,991 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:50,992 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2020-12-22 19:00:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:00:51,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:51,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 30 [2020-12-22 19:00:51,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987293103] [2020-12-22 19:00:51,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 19:00:51,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:51,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 19:00:51,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:00:51,026 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 30 states. [2020-12-22 19:00:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:52,442 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2020-12-22 19:00:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:00:52,442 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 60 [2020-12-22 19:00:52,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:52,443 INFO L225 Difference]: With dead ends: 112 [2020-12-22 19:00:52,443 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 19:00:52,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 19:00:52,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 19:00:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2020-12-22 19:00:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 19:00:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-12-22 19:00:52,446 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 60 [2020-12-22 19:00:52,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:52,446 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-12-22 19:00:52,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 19:00:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-12-22 19:00:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 19:00:52,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:52,447 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:52,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 19:00:52,651 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:52,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:52,652 INFO L82 PathProgramCache]: Analyzing trace with hash -2103855098, now seen corresponding path program 6 times [2020-12-22 19:00:52,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:52,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336821329] [2020-12-22 19:00:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 6 proven. 62 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:00:52,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336821329] [2020-12-22 19:00:52,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315921204] [2020-12-22 19:00:52,863 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 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 19:00:52,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-22 19:00:52,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:52,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 19:00:52,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:00:53,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:53,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2020-12-22 19:00:53,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698665735] [2020-12-22 19:00:53,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 19:00:53,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:53,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 19:00:53,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2020-12-22 19:00:53,293 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 26 states. [2020-12-22 19:00:53,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:53,915 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-12-22 19:00:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:00:53,915 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 64 [2020-12-22 19:00:53,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:53,916 INFO L225 Difference]: With dead ends: 76 [2020-12-22 19:00:53,916 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 19:00:53,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 19:00:53,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 19:00:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-12-22 19:00:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 19:00:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-12-22 19:00:53,921 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 64 [2020-12-22 19:00:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:53,921 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-12-22 19:00:53,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 19:00:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-12-22 19:00:53,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 19:00:53,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:53,922 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:54,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:54,136 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:00:54,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:54,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1124847399, now seen corresponding path program 4 times [2020-12-22 19:00:54,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:54,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400877604] [2020-12-22 19:00:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:54,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400877604] [2020-12-22 19:00:54,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15242210] [2020-12-22 19:00:54,807 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 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 19:00:54,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:00:54,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:54,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 90 conjunts are in the unsatisfiable core [2020-12-22 19:00:54,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:54,901 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_29|], 1=[|v_#valid_35|]} [2020-12-22 19:00:54,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:54,904 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 19:00:54,905 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:54,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:54,918 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 19:00:54,919 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:54,928 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:54,929 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:54,929 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2020-12-22 19:00:55,456 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2020-12-22 19:00:55,457 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:55,465 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:55,466 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:55,466 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2020-12-22 19:00:56,477 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:00:56,483 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:56,483 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2020-12-22 19:00:56,484 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:00:56,503 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:56,506 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:00:56,510 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:00:56,511 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:00:56,511 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:65, output treesize:35 [2020-12-22 19:00:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:56,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:56,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 51 [2020-12-22 19:00:56,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255432939] [2020-12-22 19:00:56,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-12-22 19:00:56,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:56,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-12-22 19:00:56,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2378, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 19:00:56,715 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 51 states. [2020-12-22 19:01:00,032 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-12-22 19:01:01,009 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-22 19:01:01,236 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-12-22 19:01:01,508 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-12-22 19:01:01,741 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-12-22 19:01:01,981 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2020-12-22 19:01:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:02,307 INFO L93 Difference]: Finished difference Result 194 states and 198 transitions. [2020-12-22 19:01:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-12-22 19:01:02,308 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 66 [2020-12-22 19:01:02,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:02,310 INFO L225 Difference]: With dead ends: 194 [2020-12-22 19:01:02,310 INFO L226 Difference]: Without dead ends: 140 [2020-12-22 19:01:02,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2172 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1064, Invalid=8442, Unknown=0, NotChecked=0, Total=9506 [2020-12-22 19:01:02,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-22 19:01:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 76. [2020-12-22 19:01:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 19:01:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-12-22 19:01:02,318 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 66 [2020-12-22 19:01:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:02,318 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-12-22 19:01:02,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-12-22 19:01:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-12-22 19:01:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 19:01:02,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:02,319 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:02,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-22 19:01:02,532 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:02,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:02,533 INFO L82 PathProgramCache]: Analyzing trace with hash 284001220, now seen corresponding path program 5 times [2020-12-22 19:01:02,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:02,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848338474] [2020-12-22 19:01:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 70 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:01:02,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848338474] [2020-12-22 19:01:02,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388392141] [2020-12-22 19:01:02,788 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 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 19:01:02,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-22 19:01:02,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:02,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-22 19:01:02,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:02,978 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:02,979 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 25 [2020-12-22 19:01:02,980 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:02,995 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:01:02,997 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:02,997 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-22 19:01:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 15 proven. 61 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:01:03,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:03,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 21 [2020-12-22 19:01:03,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562670399] [2020-12-22 19:01:03,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 19:01:03,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:03,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 19:01:03,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:01:03,199 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 22 states. [2020-12-22 19:01:03,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:03,679 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-12-22 19:01:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:01:03,679 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 70 [2020-12-22 19:01:03,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:03,680 INFO L225 Difference]: With dead ends: 79 [2020-12-22 19:01:03,680 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 19:01:03,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:01:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 19:01:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-12-22 19:01:03,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 19:01:03,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-12-22 19:01:03,685 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 70 [2020-12-22 19:01:03,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:03,686 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-12-22 19:01:03,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 19:01:03,686 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-12-22 19:01:03,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 19:01:03,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:03,688 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:03,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-22 19:01:03,893 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:03,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:03,894 INFO L82 PathProgramCache]: Analyzing trace with hash 323232178, now seen corresponding path program 7 times [2020-12-22 19:01:03,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:03,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762247872] [2020-12-22 19:01:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 5 proven. 88 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:01:04,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762247872] [2020-12-22 19:01:04,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550931177] [2020-12-22 19:01:04,293 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 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 19:01:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:04,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 65 conjunts are in the unsatisfiable core [2020-12-22 19:01:04,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:04,396 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 19:01:04,397 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:04,400 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:04,401 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:04,401 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-22 19:01:04,642 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-12-22 19:01:04,643 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:04,649 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:04,651 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:04,651 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-22 19:01:04,700 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 25 treesize of output 24 [2020-12-22 19:01:04,702 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:04,711 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:04,712 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:04,713 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2020-12-22 19:01:05,370 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:05,371 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2020-12-22 19:01:05,372 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:01:05,388 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2020-12-22 19:01:05,390 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:05,391 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2020-12-22 19:01:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 5 proven. 88 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:01:05,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:05,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2020-12-22 19:01:05,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829652481] [2020-12-22 19:01:05,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-22 19:01:05,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:05,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-22 19:01:05,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=976, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 19:01:05,431 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 33 states. [2020-12-22 19:01:10,147 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-12-22 19:01:14,299 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-22 19:01:18,444 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-22 19:01:22,606 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-22 19:01:24,900 WARN L197 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-22 19:01:29,055 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-22 19:01:33,171 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-22 19:01:33,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:33,181 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2020-12-22 19:01:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:01:33,182 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 74 [2020-12-22 19:01:33,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:33,182 INFO L225 Difference]: With dead ends: 136 [2020-12-22 19:01:33,183 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 19:01:33,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=230, Invalid=1750, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 19:01:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 19:01:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2020-12-22 19:01:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:01:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-12-22 19:01:33,186 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 74 [2020-12-22 19:01:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:33,187 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-12-22 19:01:33,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-22 19:01:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-12-22 19:01:33,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 19:01:33,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:33,188 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:33,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-22 19:01:33,394 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:33,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1728963727, now seen corresponding path program 8 times [2020-12-22 19:01:33,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:33,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974480121] [2020-12-22 19:01:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:01:33,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974480121] [2020-12-22 19:01:33,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725611776] [2020-12-22 19:01:33,718 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 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 19:01:33,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:01:33,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:33,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-22 19:01:33,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:01:34,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:34,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 25 [2020-12-22 19:01:34,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818640703] [2020-12-22 19:01:34,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 19:01:34,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:34,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 19:01:34,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2020-12-22 19:01:34,116 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 26 states. [2020-12-22 19:01:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:34,915 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-12-22 19:01:34,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:01:34,915 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 78 [2020-12-22 19:01:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:34,916 INFO L225 Difference]: With dead ends: 90 [2020-12-22 19:01:34,917 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:01:34,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=996, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 19:01:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:01:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2020-12-22 19:01:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 19:01:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-12-22 19:01:34,920 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 78 [2020-12-22 19:01:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:34,920 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-12-22 19:01:34,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 19:01:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-12-22 19:01:34,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 19:01:34,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:34,921 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:35,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-12-22 19:01:35,136 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:35,137 INFO L82 PathProgramCache]: Analyzing trace with hash -618201744, now seen corresponding path program 6 times [2020-12-22 19:01:35,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:35,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201281991] [2020-12-22 19:01:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 15 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:35,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201281991] [2020-12-22 19:01:35,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378880428] [2020-12-22 19:01:35,946 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 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 19:01:36,138 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-22 19:01:36,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:36,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 131 conjunts are in the unsatisfiable core [2020-12-22 19:01:36,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:36,464 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:01:36,465 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:36,470 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:36,471 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:36,471 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2020-12-22 19:01:37,198 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:37,199 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 19:01:37,200 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:37,202 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:37,202 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 19:01:37,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2020-12-22 19:01:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 15 proven. 132 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:01:37,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:37,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29] total 45 [2020-12-22 19:01:37,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76544903] [2020-12-22 19:01:37,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-12-22 19:01:37,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:37,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-12-22 19:01:37,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 19:01:37,225 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 45 states. [2020-12-22 19:01:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:39,752 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2020-12-22 19:01:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-22 19:01:39,753 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 80 [2020-12-22 19:01:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:39,755 INFO L225 Difference]: With dead ends: 129 [2020-12-22 19:01:39,755 INFO L226 Difference]: Without dead ends: 96 [2020-12-22 19:01:39,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=419, Invalid=3741, Unknown=0, NotChecked=0, Total=4160 [2020-12-22 19:01:39,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-22 19:01:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-12-22 19:01:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 19:01:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-12-22 19:01:39,762 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 80 [2020-12-22 19:01:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:39,762 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-12-22 19:01:39,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-12-22 19:01:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-12-22 19:01:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 19:01:39,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:39,763 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:39,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:39,970 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:39,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash -704234675, now seen corresponding path program 7 times [2020-12-22 19:01:39,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:39,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466239744] [2020-12-22 19:01:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 15 proven. 105 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-22 19:01:40,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466239744] [2020-12-22 19:01:40,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625707139] [2020-12-22 19:01:40,312 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 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 19:01:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:40,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-22 19:01:40,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 28 proven. 92 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-22 19:01:40,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:40,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 26 [2020-12-22 19:01:40,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062233952] [2020-12-22 19:01:40,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-22 19:01:40,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:40,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-22 19:01:40,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:01:40,712 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 27 states. [2020-12-22 19:01:41,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:41,504 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2020-12-22 19:01:41,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:01:41,505 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 84 [2020-12-22 19:01:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:41,506 INFO L225 Difference]: With dead ends: 93 [2020-12-22 19:01:41,506 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 19:01:41,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=258, Invalid=1002, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 19:01:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 19:01:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-12-22 19:01:41,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 19:01:41,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-12-22 19:01:41,509 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 84 [2020-12-22 19:01:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:41,510 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-12-22 19:01:41,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-22 19:01:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-12-22 19:01:41,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 19:01:41,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:41,511 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:41,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:41,718 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:41,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:41,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1498157893, now seen corresponding path program 9 times [2020-12-22 19:01:41,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:41,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408601920] [2020-12-22 19:01:41,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 135 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-22 19:01:42,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408601920] [2020-12-22 19:01:42,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020610641] [2020-12-22 19:01:42,175 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 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 19:01:42,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-22 19:01:42,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:42,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 94 conjunts are in the unsatisfiable core [2020-12-22 19:01:42,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:42,625 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 19:01:42,627 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:42,633 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:42,634 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:42,634 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-22 19:01:43,256 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-12-22 19:01:43,257 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:43,266 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:43,270 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:43,270 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-22 19:01:43,351 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 24 treesize of output 23 [2020-12-22 19:01:43,353 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:43,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:43,369 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:43,370 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:37, output treesize:33 [2020-12-22 19:01:44,180 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:01:44,182 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2020-12-22 19:01:44,186 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:44,193 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:44,196 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 19:01:44,196 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:36, output treesize:3 [2020-12-22 19:01:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 179 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:01:44,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:44,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 41 [2020-12-22 19:01:44,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414819348] [2020-12-22 19:01:44,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-12-22 19:01:44,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:44,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-12-22 19:01:44,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1531, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 19:01:44,247 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 41 states. [2020-12-22 19:01:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:47,084 INFO L93 Difference]: Finished difference Result 160 states and 163 transitions. [2020-12-22 19:01:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:01:47,085 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 88 [2020-12-22 19:01:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:47,086 INFO L225 Difference]: With dead ends: 160 [2020-12-22 19:01:47,086 INFO L226 Difference]: Without dead ends: 99 [2020-12-22 19:01:47,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 19:01:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-22 19:01:47,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2020-12-22 19:01:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 19:01:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2020-12-22 19:01:47,091 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 88 [2020-12-22 19:01:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:47,091 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2020-12-22 19:01:47,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-12-22 19:01:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2020-12-22 19:01:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 19:01:47,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:47,092 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:47,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-12-22 19:01:47,296 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:47,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:47,297 INFO L82 PathProgramCache]: Analyzing trace with hash -5445416, now seen corresponding path program 10 times [2020-12-22 19:01:47,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:47,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364934489] [2020-12-22 19:01:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 28 proven. 134 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-22 19:01:47,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364934489] [2020-12-22 19:01:47,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400504755] [2020-12-22 19:01:47,719 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 19:01:47,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:01:47,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:47,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 131 conjunts are in the unsatisfiable core [2020-12-22 19:01:47,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:47,858 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_31|], 1=[|v_#valid_38|]} [2020-12-22 19:01:47,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:01:47,865 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 19:01:47,866 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:47,876 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:47,881 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 19:01:47,882 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:47,894 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:47,895 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:47,896 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:19 [2020-12-22 19:01:48,622 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2020-12-22 19:01:48,623 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:48,632 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:48,633 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:48,633 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2020-12-22 19:01:50,138 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:01:50,141 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2020-12-22 19:01:50,142 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:50,158 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:50,160 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:50,160 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:29 [2020-12-22 19:01:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 56 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:50,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:50,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 35] total 52 [2020-12-22 19:01:50,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136395312] [2020-12-22 19:01:50,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-12-22 19:01:50,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:50,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-12-22 19:01:50,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2480, Unknown=0, NotChecked=0, Total=2652 [2020-12-22 19:01:50,317 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 52 states. [2020-12-22 19:01:52,625 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-12-22 19:01:55,786 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-12-22 19:01:56,138 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-12-22 19:01:56,366 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-12-22 19:01:56,600 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-12-22 19:01:57,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:57,033 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2020-12-22 19:01:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-22 19:01:57,034 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 92 [2020-12-22 19:01:57,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:57,035 INFO L225 Difference]: With dead ends: 151 [2020-12-22 19:01:57,035 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 19:01:57,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1573 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1172, Invalid=7200, Unknown=0, NotChecked=0, Total=8372 [2020-12-22 19:01:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 19:01:57,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2020-12-22 19:01:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-22 19:01:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2020-12-22 19:01:57,040 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 92 [2020-12-22 19:01:57,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:57,040 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2020-12-22 19:01:57,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-12-22 19:01:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2020-12-22 19:01:57,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 19:01:57,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:57,041 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:57,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:57,255 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:57,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:57,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1626450582, now seen corresponding path program 8 times [2020-12-22 19:01:57,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:57,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080231017] [2020-12-22 19:01:57,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 28 proven. 146 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 19:01:57,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080231017] [2020-12-22 19:01:57,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907369877] [2020-12-22 19:01:57,655 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 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 19:01:57,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:01:57,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:57,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 71 conjunts are in the unsatisfiable core [2020-12-22 19:01:57,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:57,790 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:57,791 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 25 [2020-12-22 19:01:57,793 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:57,814 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:01:57,816 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:57,817 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-22 19:01:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 45 proven. 129 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 19:01:58,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:58,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2020-12-22 19:01:58,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715594688] [2020-12-22 19:01:58,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-22 19:01:58,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:58,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-22 19:01:58,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1182, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 19:01:58,561 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 37 states. [2020-12-22 19:01:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:59,636 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2020-12-22 19:01:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:01:59,637 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 98 [2020-12-22 19:01:59,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:59,639 INFO L225 Difference]: With dead ends: 107 [2020-12-22 19:01:59,639 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 19:01:59,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=360, Invalid=1802, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 19:01:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 19:01:59,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-12-22 19:01:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-22 19:01:59,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2020-12-22 19:01:59,648 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 98 [2020-12-22 19:01:59,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:59,648 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2020-12-22 19:01:59,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-22 19:01:59,648 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2020-12-22 19:01:59,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 19:01:59,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:59,649 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:59,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-12-22 19:01:59,850 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:01:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:59,851 INFO L82 PathProgramCache]: Analyzing trace with hash -464220284, now seen corresponding path program 11 times [2020-12-22 19:01:59,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:59,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260074504] [2020-12-22 19:01:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 7 proven. 192 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 19:02:00,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260074504] [2020-12-22 19:02:00,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655196982] [2020-12-22 19:02:00,486 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 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 19:02:00,892 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-22 19:02:00,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:00,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 80 conjunts are in the unsatisfiable core [2020-12-22 19:02:00,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:01,261 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-22 19:02:01,263 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:01,268 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:01,269 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:01,270 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-12-22 19:02:01,362 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:01,363 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 25 treesize of output 63 [2020-12-22 19:02:01,364 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:01,389 INFO L625 ElimStorePlain]: treesize reduction 35, result has 43.5 percent of original size [2020-12-22 19:02:01,390 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:01,391 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:31, output treesize:27 [2020-12-22 19:02:01,613 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2020-12-22 19:02:01,614 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:01,616 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:01,616 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 19:02:01,617 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-22 19:02:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 7 proven. 192 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 19:02:01,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:01,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 33 [2020-12-22 19:02:01,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954882354] [2020-12-22 19:02:01,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-22 19:02:01,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:01,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-22 19:02:01,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 19:02:01,638 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 33 states. [2020-12-22 19:02:03,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:03,368 INFO L93 Difference]: Finished difference Result 184 states and 187 transitions. [2020-12-22 19:02:03,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:02:03,369 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 102 [2020-12-22 19:02:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:03,370 INFO L225 Difference]: With dead ends: 184 [2020-12-22 19:02:03,370 INFO L226 Difference]: Without dead ends: 113 [2020-12-22 19:02:03,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=216, Invalid=1854, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 19:02:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-22 19:02:03,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2020-12-22 19:02:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 19:02:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-12-22 19:02:03,372 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 102 [2020-12-22 19:02:03,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:03,373 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-12-22 19:02:03,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-22 19:02:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-12-22 19:02:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 19:02:03,373 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:03,373 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:03,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-22 19:02:03,574 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:02:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1438618849, now seen corresponding path program 12 times [2020-12-22 19:02:03,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:03,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133959236] [2020-12-22 19:02:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 45 proven. 179 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 19:02:04,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133959236] [2020-12-22 19:02:04,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534239446] [2020-12-22 19:02:04,070 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 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 19:02:04,715 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-12-22 19:02:04,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:04,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-22 19:02:04,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 66 proven. 158 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 19:02:05,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:05,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 30 [2020-12-22 19:02:05,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726535387] [2020-12-22 19:02:05,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-22 19:02:05,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:05,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-22 19:02:05,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2020-12-22 19:02:05,225 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 31 states. [2020-12-22 19:02:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:07,082 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2020-12-22 19:02:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 19:02:07,082 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 106 [2020-12-22 19:02:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:07,084 INFO L225 Difference]: With dead ends: 118 [2020-12-22 19:02:07,084 INFO L226 Difference]: Without dead ends: 118 [2020-12-22 19:02:07,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=422, Invalid=1834, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 19:02:07,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-22 19:02:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2020-12-22 19:02:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 19:02:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2020-12-22 19:02:07,088 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 106 [2020-12-22 19:02:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:07,089 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2020-12-22 19:02:07,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-22 19:02:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2020-12-22 19:02:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 19:02:07,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:07,090 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:07,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-12-22 19:02:07,306 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:02:07,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:07,307 INFO L82 PathProgramCache]: Analyzing trace with hash -466755262, now seen corresponding path program 9 times [2020-12-22 19:02:07,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:07,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523862706] [2020-12-22 19:02:07,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 21 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:08,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523862706] [2020-12-22 19:02:08,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240065400] [2020-12-22 19:02:08,642 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 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 19:02:09,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-12-22 19:02:09,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:09,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 169 conjunts are in the unsatisfiable core [2020-12-22 19:02:09,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:09,727 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:02:09,728 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:09,735 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:09,736 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:09,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2020-12-22 19:02:10,947 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:10,948 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 19:02:10,949 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:10,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:10,951 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 19:02:10,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2020-12-22 19:02:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 21 proven. 282 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:02:10,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:10,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 37] total 57 [2020-12-22 19:02:10,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943280905] [2020-12-22 19:02:10,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-22 19:02:10,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:10,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-22 19:02:10,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3016, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 19:02:10,988 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 57 states. [2020-12-22 19:02:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:14,958 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2020-12-22 19:02:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-22 19:02:14,959 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 108 [2020-12-22 19:02:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:14,960 INFO L225 Difference]: With dead ends: 169 [2020-12-22 19:02:14,960 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 19:02:14,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=575, Invalid=6231, Unknown=0, NotChecked=0, Total=6806 [2020-12-22 19:02:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 19:02:14,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118. [2020-12-22 19:02:14,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-22 19:02:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-12-22 19:02:14,965 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 108 [2020-12-22 19:02:14,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:14,965 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-12-22 19:02:14,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-22 19:02:14,965 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-12-22 19:02:14,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 19:02:14,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:14,966 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:15,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-12-22 19:02:15,176 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:02:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:15,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1814519393, now seen corresponding path program 10 times [2020-12-22 19:02:15,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:15,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134506127] [2020-12-22 19:02:15,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 45 proven. 193 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-22 19:02:15,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134506127] [2020-12-22 19:02:15,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943812722] [2020-12-22 19:02:15,677 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 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 19:02:15,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:02:15,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:15,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 166 conjunts are in the unsatisfiable core [2020-12-22 19:02:15,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:15,830 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:15,830 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 25 [2020-12-22 19:02:15,832 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:15,852 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-22 19:02:15,854 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:15,854 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-22 19:02:16,244 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-12-22 19:02:16,245 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:16,251 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:16,252 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:16,252 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2020-12-22 19:02:17,224 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:17,224 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 54 [2020-12-22 19:02:17,226 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:17,248 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:17,250 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 19:02:17,251 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:22 [2020-12-22 19:02:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 72 proven. 256 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:02:17,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:17,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 32] total 45 [2020-12-22 19:02:17,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047507042] [2020-12-22 19:02:17,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-22 19:02:17,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:17,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-22 19:02:17,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1936, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 19:02:17,541 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 46 states. [2020-12-22 19:02:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:21,818 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2020-12-22 19:02:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 19:02:21,819 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 112 [2020-12-22 19:02:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:21,821 INFO L225 Difference]: With dead ends: 121 [2020-12-22 19:02:21,821 INFO L226 Difference]: Without dead ends: 121 [2020-12-22 19:02:21,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=485, Invalid=3547, Unknown=0, NotChecked=0, Total=4032 [2020-12-22 19:02:21,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-22 19:02:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2020-12-22 19:02:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-22 19:02:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2020-12-22 19:02:21,825 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 112 [2020-12-22 19:02:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:21,826 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2020-12-22 19:02:21,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-22 19:02:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2020-12-22 19:02:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 19:02:21,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:21,827 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:22,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-12-22 19:02:22,034 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:02:22,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:22,035 INFO L82 PathProgramCache]: Analyzing trace with hash -848897523, now seen corresponding path program 13 times [2020-12-22 19:02:22,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:22,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752749745] [2020-12-22 19:02:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:22,740 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 8 proven. 259 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-22 19:02:22,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752749745] [2020-12-22 19:02:22,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594010842] [2020-12-22 19:02:22,740 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 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 19:02:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:22,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 95 conjunts are in the unsatisfiable core [2020-12-22 19:02:22,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:22,922 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 19:02:22,923 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:22,930 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:22,930 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:22,931 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-22 19:02:23,547 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-12-22 19:02:23,548 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:23,556 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:23,557 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:23,557 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2020-12-22 19:02:23,631 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 25 treesize of output 24 [2020-12-22 19:02:23,633 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:23,645 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:23,647 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:23,648 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:34 [2020-12-22 19:02:25,233 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:02:25,235 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2020-12-22 19:02:25,236 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:25,250 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:25,253 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:25,253 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:49, output treesize:3 [2020-12-22 19:02:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 8 proven. 259 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-22 19:02:25,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:25,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 46 [2020-12-22 19:02:25,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21042510] [2020-12-22 19:02:25,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-22 19:02:25,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:25,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-22 19:02:25,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1958, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 19:02:25,343 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 46 states. [2020-12-22 19:02:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:29,500 INFO L93 Difference]: Finished difference Result 208 states and 211 transitions. [2020-12-22 19:02:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:02:29,501 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 116 [2020-12-22 19:02:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:29,503 INFO L225 Difference]: With dead ends: 208 [2020-12-22 19:02:29,503 INFO L226 Difference]: Without dead ends: 127 [2020-12-22 19:02:29,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2020-12-22 19:02:29,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-22 19:02:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 124. [2020-12-22 19:02:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-22 19:02:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2020-12-22 19:02:29,506 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 116 [2020-12-22 19:02:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:29,506 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2020-12-22 19:02:29,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-22 19:02:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2020-12-22 19:02:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 19:02:29,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:29,507 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:29,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:02:29,708 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:02:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:29,709 INFO L82 PathProgramCache]: Analyzing trace with hash -715474774, now seen corresponding path program 14 times [2020-12-22 19:02:29,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:29,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846507905] [2020-12-22 19:02:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 66 proven. 230 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-22 19:02:30,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846507905] [2020-12-22 19:02:30,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501741395] [2020-12-22 19:02:30,330 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 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 19:02:30,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:02:30,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:30,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 83 conjunts are in the unsatisfiable core [2020-12-22 19:02:30,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 91 proven. 205 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-22 19:02:31,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:31,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 34 [2020-12-22 19:02:31,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783062376] [2020-12-22 19:02:31,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-22 19:02:31,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:31,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-22 19:02:31,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 19:02:31,016 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 35 states. [2020-12-22 19:02:32,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:32,563 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2020-12-22 19:02:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 19:02:32,564 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 120 [2020-12-22 19:02:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:32,565 INFO L225 Difference]: With dead ends: 132 [2020-12-22 19:02:32,565 INFO L226 Difference]: Without dead ends: 132 [2020-12-22 19:02:32,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=468, Invalid=1788, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 19:02:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-22 19:02:32,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2020-12-22 19:02:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-22 19:02:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-12-22 19:02:32,570 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 120 [2020-12-22 19:02:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:32,570 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-12-22 19:02:32,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-22 19:02:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-12-22 19:02:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 19:02:32,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:32,571 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:32,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:02:32,779 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:02:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:32,780 INFO L82 PathProgramCache]: Analyzing trace with hash -376490293, now seen corresponding path program 11 times [2020-12-22 19:02:32,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:32,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249705338] [2020-12-22 19:02:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 24 proven. 379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:34,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249705338] [2020-12-22 19:02:34,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055589763] [2020-12-22 19:02:34,324 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 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 19:02:34,648 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-22 19:02:34,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:34,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 181 conjunts are in the unsatisfiable core [2020-12-22 19:02:34,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:35,617 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-22 19:02:35,618 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:35,627 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:35,629 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:35,629 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-12-22 19:02:36,193 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2020-12-22 19:02:36,195 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:36,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:36,197 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 19:02:36,197 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-22 19:02:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 24 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:02:36,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:36,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 33] total 56 [2020-12-22 19:02:36,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655473399] [2020-12-22 19:02:36,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-12-22 19:02:36,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:36,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-12-22 19:02:36,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2926, Unknown=0, NotChecked=0, Total=3080 [2020-12-22 19:02:36,227 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 56 states. [2020-12-22 19:02:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:41,668 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2020-12-22 19:02:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-22 19:02:41,669 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2020-12-22 19:02:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:41,670 INFO L225 Difference]: With dead ends: 189 [2020-12-22 19:02:41,670 INFO L226 Difference]: Without dead ends: 138 [2020-12-22 19:02:41,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=590, Invalid=6892, Unknown=0, NotChecked=0, Total=7482 [2020-12-22 19:02:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-22 19:02:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2020-12-22 19:02:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 19:02:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2020-12-22 19:02:41,675 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 122 [2020-12-22 19:02:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:41,675 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2020-12-22 19:02:41,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-12-22 19:02:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2020-12-22 19:02:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-22 19:02:41,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:41,676 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:41,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2020-12-22 19:02:41,890 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:02:41,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:41,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1840246888, now seen corresponding path program 12 times [2020-12-22 19:02:41,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:41,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830609582] [2020-12-22 19:02:41,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 66 proven. 246 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-12-22 19:02:42,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830609582] [2020-12-22 19:02:42,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724586941] [2020-12-22 19:02:42,547 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 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 19:02:43,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-22 19:02:43,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:43,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 75 conjunts are in the unsatisfiable core [2020-12-22 19:02:43,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:43,435 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:43,435 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 25 [2020-12-22 19:02:43,437 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:43,457 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:02:43,459 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:43,459 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-22 19:02:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 91 proven. 221 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-12-22 19:02:44,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:44,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 44 [2020-12-22 19:02:44,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242749414] [2020-12-22 19:02:44,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-12-22 19:02:44,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:44,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-12-22 19:02:44,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1741, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 19:02:44,588 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand 45 states. [2020-12-22 19:02:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:47,158 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2020-12-22 19:02:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 19:02:47,159 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 126 [2020-12-22 19:02:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:47,160 INFO L225 Difference]: With dead ends: 135 [2020-12-22 19:02:47,160 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 19:02:47,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=798, Invalid=3234, Unknown=0, NotChecked=0, Total=4032 [2020-12-22 19:02:47,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 19:02:47,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2020-12-22 19:02:47,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-22 19:02:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2020-12-22 19:02:47,165 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 126 [2020-12-22 19:02:47,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:47,165 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2020-12-22 19:02:47,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-12-22 19:02:47,165 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2020-12-22 19:02:47,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 19:02:47,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:47,166 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:47,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:02:47,368 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:02:47,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:47,369 INFO L82 PathProgramCache]: Analyzing trace with hash 972528726, now seen corresponding path program 15 times [2020-12-22 19:02:47,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:47,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807357396] [2020-12-22 19:02:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 9 proven. 336 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-12-22 19:02:48,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807357396] [2020-12-22 19:02:48,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742051848] [2020-12-22 19:02:48,231 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 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 19:02:49,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-22 19:02:49,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:49,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 130 conjunts are in the unsatisfiable core [2020-12-22 19:02:49,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:49,051 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 19:02:49,053 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:49,060 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:49,061 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:49,062 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-22 19:02:50,330 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-12-22 19:02:50,331 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:50,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:50,347 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:50,347 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-22 19:02:50,460 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 24 treesize of output 23 [2020-12-22 19:02:50,461 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:50,475 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:50,477 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:50,477 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:37, output treesize:33 [2020-12-22 19:02:52,049 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:02:52,051 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2020-12-22 19:02:52,052 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:52,060 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:52,062 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 19:02:52,063 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:36, output treesize:3 [2020-12-22 19:02:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 9 proven. 455 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:02:52,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:52,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 33] total 56 [2020-12-22 19:02:52,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320026461] [2020-12-22 19:02:52,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-12-22 19:02:52,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:52,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-12-22 19:02:52,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2929, Unknown=0, NotChecked=0, Total=3080 [2020-12-22 19:02:52,178 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand 56 states. [2020-12-22 19:02:58,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:58,773 INFO L93 Difference]: Finished difference Result 232 states and 235 transitions. [2020-12-22 19:02:58,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 19:02:58,774 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 130 [2020-12-22 19:02:58,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:58,775 INFO L225 Difference]: With dead ends: 232 [2020-12-22 19:02:58,776 INFO L226 Difference]: Without dead ends: 141 [2020-12-22 19:02:58,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=405, Invalid=5601, Unknown=0, NotChecked=0, Total=6006 [2020-12-22 19:02:58,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-22 19:02:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2020-12-22 19:02:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-22 19:02:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-12-22 19:02:58,779 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 130 [2020-12-22 19:02:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:58,780 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-12-22 19:02:58,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-12-22 19:02:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-12-22 19:02:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 19:02:58,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:58,781 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:58,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-12-22 19:02:58,996 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:02:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1046422579, now seen corresponding path program 16 times [2020-12-22 19:02:58,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:58,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350486175] [2020-12-22 19:02:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 91 proven. 287 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-12-22 19:02:59,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350486175] [2020-12-22 19:02:59,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431691422] [2020-12-22 19:02:59,745 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 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 19:02:59,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:02:59,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:59,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 77 conjunts are in the unsatisfiable core [2020-12-22 19:02:59,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:59,901 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_35|], 1=[|v_#valid_41|]} [2020-12-22 19:02:59,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:02:59,905 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:02:59,906 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:59,916 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:59,923 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 19:02:59,925 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:59,935 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:59,936 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:59,936 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:18 [2020-12-22 19:03:00,116 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 12 [2020-12-22 19:03:00,117 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:00,131 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:00,132 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:00,133 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:28 [2020-12-22 19:03:00,214 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 29 treesize of output 28 [2020-12-22 19:03:00,216 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:00,230 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:00,232 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:00,232 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:35 [2020-12-22 19:03:01,999 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:02,000 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2020-12-22 19:03:02,002 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:03:02,023 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:02,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:03:02,031 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:02,031 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:52, output treesize:23 [2020-12-22 19:03:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 201 proven. 24 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-12-22 19:03:02,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:02,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18] total 40 [2020-12-22 19:03:02,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209823574] [2020-12-22 19:03:02,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-12-22 19:03:02,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:02,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-12-22 19:03:02,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1473, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 19:03:02,290 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 41 states. [2020-12-22 19:03:04,356 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-22 19:03:04,825 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 19:03:05,173 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 19:03:05,445 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-22 19:03:05,660 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-12-22 19:03:05,899 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-22 19:03:06,114 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 19:03:06,372 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-22 19:03:06,566 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 19:03:06,824 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-22 19:03:07,051 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-12-22 19:03:07,331 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-22 19:03:07,541 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 19:03:07,804 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-22 19:03:08,003 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 19:03:08,254 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 19:03:08,731 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-12-22 19:03:09,286 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-22 19:03:09,559 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-22 19:03:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:09,578 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2020-12-22 19:03:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-22 19:03:09,579 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 134 [2020-12-22 19:03:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:09,580 INFO L225 Difference]: With dead ends: 140 [2020-12-22 19:03:09,581 INFO L226 Difference]: Without dead ends: 140 [2020-12-22 19:03:09,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1053, Invalid=4349, Unknown=0, NotChecked=0, Total=5402 [2020-12-22 19:03:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-22 19:03:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2020-12-22 19:03:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-22 19:03:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2020-12-22 19:03:09,586 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2020-12-22 19:03:09,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:09,587 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2020-12-22 19:03:09,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-12-22 19:03:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2020-12-22 19:03:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 19:03:09,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:09,588 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:09,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:09,797 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:09,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:09,797 INFO L82 PathProgramCache]: Analyzing trace with hash 589751316, now seen corresponding path program 13 times [2020-12-22 19:03:09,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:09,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795361781] [2020-12-22 19:03:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 27 proven. 489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:11,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795361781] [2020-12-22 19:03:11,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211918723] [2020-12-22 19:03:11,723 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 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 19:03:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:11,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 201 conjunts are in the unsatisfiable core [2020-12-22 19:03:11,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:13,208 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-22 19:03:13,210 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:13,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:13,220 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:13,220 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-12-22 19:03:13,907 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2020-12-22 19:03:13,908 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:13,911 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:13,912 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 19:03:13,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-22 19:03:13,943 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 27 proven. 488 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:13,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:13,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 36] total 61 [2020-12-22 19:03:13,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467425843] [2020-12-22 19:03:13,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-12-22 19:03:13,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:13,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-12-22 19:03:13,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=3492, Unknown=0, NotChecked=0, Total=3660 [2020-12-22 19:03:13,946 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 61 states. [2020-12-22 19:03:21,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:21,379 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2020-12-22 19:03:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-22 19:03:21,380 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 136 [2020-12-22 19:03:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:21,382 INFO L225 Difference]: With dead ends: 204 [2020-12-22 19:03:21,382 INFO L226 Difference]: Without dead ends: 147 [2020-12-22 19:03:21,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=655, Invalid=8275, Unknown=0, NotChecked=0, Total=8930 [2020-12-22 19:03:21,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-22 19:03:21,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2020-12-22 19:03:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-22 19:03:21,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2020-12-22 19:03:21,386 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 136 [2020-12-22 19:03:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:21,386 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2020-12-22 19:03:21,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-12-22 19:03:21,386 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2020-12-22 19:03:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 19:03:21,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:21,387 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:21,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-12-22 19:03:21,599 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:21,600 INFO L82 PathProgramCache]: Analyzing trace with hash -80189711, now seen corresponding path program 14 times [2020-12-22 19:03:21,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:21,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388713019] [2020-12-22 19:03:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 91 proven. 305 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-12-22 19:03:22,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388713019] [2020-12-22 19:03:22,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985718816] [2020-12-22 19:03:22,390 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 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 19:03:22,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:03:22,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:22,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 98 conjunts are in the unsatisfiable core [2020-12-22 19:03:22,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:22,580 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:22,581 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 25 [2020-12-22 19:03:22,582 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:22,606 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:03:22,608 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:22,608 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-22 19:03:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 120 proven. 276 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-12-22 19:03:24,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:24,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 48 [2020-12-22 19:03:24,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660468775] [2020-12-22 19:03:24,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-12-22 19:03:24,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:24,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-12-22 19:03:24,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2103, Unknown=0, NotChecked=0, Total=2352 [2020-12-22 19:03:24,093 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 49 states. [2020-12-22 19:03:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:26,209 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2020-12-22 19:03:26,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:03:26,210 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 140 [2020-12-22 19:03:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:26,211 INFO L225 Difference]: With dead ends: 148 [2020-12-22 19:03:26,211 INFO L226 Difference]: Without dead ends: 148 [2020-12-22 19:03:26,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=600, Invalid=3182, Unknown=0, NotChecked=0, Total=3782 [2020-12-22 19:03:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-22 19:03:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2020-12-22 19:03:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-22 19:03:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2020-12-22 19:03:26,214 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 140 [2020-12-22 19:03:26,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:26,214 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2020-12-22 19:03:26,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-12-22 19:03:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2020-12-22 19:03:26,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 19:03:26,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:26,215 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:26,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-12-22 19:03:26,430 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:26,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:26,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1351584576, now seen corresponding path program 15 times [2020-12-22 19:03:26,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:26,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010132028] [2020-12-22 19:03:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 254 proven. 199 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-12-22 19:03:27,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010132028] [2020-12-22 19:03:27,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75734295] [2020-12-22 19:03:27,258 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 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 19:03:28,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-22 19:03:28,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:28,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 87 conjunts are in the unsatisfiable core [2020-12-22 19:03:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:28,562 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_37|], 1=[|v_#valid_42|]} [2020-12-22 19:03:28,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:03:28,568 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 19:03:28,569 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:28,580 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:28,586 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 19:03:28,588 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:28,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:28,602 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:28,602 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-22 19:03:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 300 proven. 153 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-12-22 19:03:30,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:30,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24] total 49 [2020-12-22 19:03:30,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775388754] [2020-12-22 19:03:30,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-12-22 19:03:30,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:30,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-12-22 19:03:30,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=1942, Unknown=0, NotChecked=0, Total=2352 [2020-12-22 19:03:30,057 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 49 states. [2020-12-22 19:03:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:31,648 INFO L93 Difference]: Finished difference Result 256 states and 259 transitions. [2020-12-22 19:03:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 19:03:31,651 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 146 [2020-12-22 19:03:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:31,652 INFO L225 Difference]: With dead ends: 256 [2020-12-22 19:03:31,652 INFO L226 Difference]: Without dead ends: 154 [2020-12-22 19:03:31,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=725, Invalid=3181, Unknown=0, NotChecked=0, Total=3906 [2020-12-22 19:03:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-22 19:03:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2020-12-22 19:03:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-22 19:03:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2020-12-22 19:03:31,657 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 146 [2020-12-22 19:03:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:31,658 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2020-12-22 19:03:31,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-12-22 19:03:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2020-12-22 19:03:31,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 19:03:31,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:31,659 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:31,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-12-22 19:03:31,874 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:31,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:31,874 INFO L82 PathProgramCache]: Analyzing trace with hash -575817443, now seen corresponding path program 16 times [2020-12-22 19:03:31,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:31,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500857129] [2020-12-22 19:03:31,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 30 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:34,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500857129] [2020-12-22 19:03:34,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911833636] [2020-12-22 19:03:34,207 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 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 19:03:34,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:03:34,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:34,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 194 conjunts are in the unsatisfiable core [2020-12-22 19:03:34,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:34,383 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:34,385 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 25 [2020-12-22 19:03:34,387 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:34,418 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-22 19:03:34,420 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:34,420 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-22 19:03:36,575 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-22 19:03:36,576 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:36,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:36,584 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:36,584 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-12-22 19:03:38,616 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 24 treesize of output 18 [2020-12-22 19:03:38,619 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:38,637 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:38,640 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:38,641 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:35 [2020-12-22 19:03:39,094 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:03:39,118 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:39,119 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2020-12-22 19:03:39,121 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:39,132 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:39,134 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:39,134 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:39, output treesize:3 [2020-12-22 19:03:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 256 proven. 386 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:03:39,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:39,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 40] total 79 [2020-12-22 19:03:39,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436441746] [2020-12-22 19:03:39,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-12-22 19:03:39,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:39,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-12-22 19:03:39,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=5847, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 19:03:39,226 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 79 states. [2020-12-22 19:03:47,055 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-12-22 19:03:52,663 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 19:03:53,208 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 19:03:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:53,267 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2020-12-22 19:03:53,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-12-22 19:03:53,268 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 150 [2020-12-22 19:03:53,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:53,269 INFO L225 Difference]: With dead ends: 224 [2020-12-22 19:03:53,270 INFO L226 Difference]: Without dead ends: 161 [2020-12-22 19:03:53,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3503 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=1531, Invalid=17101, Unknown=0, NotChecked=0, Total=18632 [2020-12-22 19:03:53,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-22 19:03:53,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2020-12-22 19:03:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-22 19:03:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2020-12-22 19:03:53,275 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 150 [2020-12-22 19:03:53,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:53,276 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2020-12-22 19:03:53,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-12-22 19:03:53,276 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2020-12-22 19:03:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 19:03:53,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:53,277 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:53,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-12-22 19:03:53,490 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:03:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:53,491 INFO L82 PathProgramCache]: Analyzing trace with hash 134141242, now seen corresponding path program 17 times [2020-12-22 19:03:53,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:53,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224502349] [2020-12-22 19:03:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 120 proven. 370 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-12-22 19:03:54,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224502349] [2020-12-22 19:03:54,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495802593] [2020-12-22 19:03:54,648 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 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 19:03:56,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-22 19:03:56,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:56,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 111 conjunts are in the unsatisfiable core [2020-12-22 19:03:56,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:56,242 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:56,243 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 25 [2020-12-22 19:03:56,245 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:56,285 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:03:56,287 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:56,288 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-22 19:03:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 153 proven. 337 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-12-22 19:03:57,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:57,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 39 [2020-12-22 19:03:57,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370605074] [2020-12-22 19:03:57,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-22 19:03:57,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:57,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-22 19:03:57,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1412, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 19:03:57,383 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 40 states. [2020-12-22 19:04:00,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:00,663 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2020-12-22 19:04:00,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 19:04:00,666 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2020-12-22 19:04:00,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:00,667 INFO L225 Difference]: With dead ends: 162 [2020-12-22 19:04:00,668 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 19:04:00,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=398, Invalid=2464, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 19:04:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 19:04:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-12-22 19:04:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-12-22 19:04:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2020-12-22 19:04:00,672 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 154 [2020-12-22 19:04:00,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:00,672 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2020-12-22 19:04:00,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-22 19:04:00,673 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2020-12-22 19:04:00,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-22 19:04:00,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:00,674 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:00,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:00,890 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:04:00,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:00,891 INFO L82 PathProgramCache]: Analyzing trace with hash 871521993, now seen corresponding path program 18 times [2020-12-22 19:04:00,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:00,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875693841] [2020-12-22 19:04:00,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 312 proven. 241 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-12-22 19:04:02,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875693841] [2020-12-22 19:04:02,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028718831] [2020-12-22 19:04:02,004 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:04,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-22 19:04:04,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:04,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 179 conjunts are in the unsatisfiable core [2020-12-22 19:04:04,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:05,686 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-22 19:04:05,688 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:05,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:05,703 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:04:05,704 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-12-22 19:04:08,469 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:08,469 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 48 [2020-12-22 19:04:08,472 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:08,501 INFO L625 ElimStorePlain]: treesize reduction 21, result has 32.3 percent of original size [2020-12-22 19:04:08,503 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:08,504 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:35, output treesize:3 [2020-12-22 19:04:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 33 proven. 520 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-12-22 19:04:08,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:08,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38] total 65 [2020-12-22 19:04:08,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627644899] [2020-12-22 19:04:08,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-12-22 19:04:08,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:08,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-12-22 19:04:08,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=3879, Unknown=0, NotChecked=0, Total=4160 [2020-12-22 19:04:08,691 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 65 states.