/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_cstrncpy-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:00:42,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:00:42,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:00:42,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:00:42,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:00:42,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:00:42,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:00:42,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:00:42,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:00:42,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:00:42,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:00:42,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:00:42,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:00:42,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:00:42,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:00:42,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:00:42,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:00:42,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:00:42,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:00:42,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:00:42,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:00:42,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:00:42,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:00:42,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:00:42,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:00:42,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:00:42,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:00:42,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:00:42,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:00:42,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:00:42,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:00:42,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:00:42,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:00:42,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:00:42,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:00:42,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:00:42,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:00:42,572 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:00:42,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:00:42,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:00:42,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:00:42,575 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:00:42,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:00:42,575 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:00:42,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:00:42,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:00:42,576 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:00:42,576 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:00:42,576 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:00:42,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:00:42,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:00:42,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:00:42,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:00:42,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:00:42,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:00:42,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:00:42,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:00:42,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:00:42,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:00:42,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:00:42,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:00:42,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:00:42,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:00:43,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:00:43,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:00:43,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:00:43,026 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:00:43,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrncpy-alloca-2.i [2020-12-22 19:00:43,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e21767a/26dff3afb99a4212ae764cbc3ccd9e4f/FLAG8b4105229 [2020-12-22 19:00:43,859 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:00:43,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncpy-alloca-2.i [2020-12-22 19:00:43,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e21767a/26dff3afb99a4212ae764cbc3ccd9e4f/FLAG8b4105229 [2020-12-22 19:00:44,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e21767a/26dff3afb99a4212ae764cbc3ccd9e4f [2020-12-22 19:00:44,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:00:44,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:00:44,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:00:44,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:00:44,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:00:44,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a04f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44, skipping insertion in model container [2020-12-22 19:00:44,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:00:44,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:00:44,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:00:44,645 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:00:44,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:00:44,746 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:00:44,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44 WrapperNode [2020-12-22 19:00:44,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:00:44,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:00:44,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:00:44,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:00:44,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:00:44,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:00:44,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:00:44,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:00:44,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (1/1) ... [2020-12-22 19:00:44,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:00:44,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:00:44,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:00:44,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:00:44,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (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 19:00:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:00:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:00:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:00:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:00:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:00:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:00:45,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:00:45,403 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 19:00:45,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:00:45 BoogieIcfgContainer [2020-12-22 19:00:45,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:00:45,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:00:45,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:00:45,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:00:45,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:00:44" (1/3) ... [2020-12-22 19:00:45,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2272e254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:00:45, skipping insertion in model container [2020-12-22 19:00:45,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:00:44" (2/3) ... [2020-12-22 19:00:45,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2272e254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:00:45, skipping insertion in model container [2020-12-22 19:00:45,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:00:45" (3/3) ... [2020-12-22 19:00:45,432 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncpy-alloca-2.i [2020-12-22 19:00:45,448 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:00:45,462 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 19:00:45,489 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 19:00:45,512 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:00:45,513 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:00:45,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:00:45,513 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:00:45,513 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:00:45,513 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:00:45,513 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:00:45,514 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:00:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-12-22 19:00:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:00:45,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:45,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:45,537 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:45,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:45,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029043, now seen corresponding path program 1 times [2020-12-22 19:00:45,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:45,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555400175] [2020-12-22 19:00:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:45,806 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 19:00:45,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555400175] [2020-12-22 19:00:45,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:45,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:00:45,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047998496] [2020-12-22 19:00:45,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:00:45,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:45,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:00:45,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:00:45,838 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-12-22 19:00:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:45,926 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-12-22 19:00:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:00:45,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 19:00:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:45,948 INFO L225 Difference]: With dead ends: 36 [2020-12-22 19:00:45,948 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 19:00:45,952 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 19:00:45,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 19:00:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-22 19:00:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 19:00:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-12-22 19:00:45,998 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 7 [2020-12-22 19:00:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:45,998 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-12-22 19:00:45,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:00:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-12-22 19:00:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:00:45,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:46,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:46,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:00:46,001 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:46,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:46,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029044, now seen corresponding path program 1 times [2020-12-22 19:00:46,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:46,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110802911] [2020-12-22 19:00:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:46,135 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 19:00:46,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110802911] [2020-12-22 19:00:46,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:46,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:00:46,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003877080] [2020-12-22 19:00:46,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:46,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:46,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:46,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:46,140 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 4 states. [2020-12-22 19:00:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:46,188 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-12-22 19:00:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:46,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 19:00:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:46,190 INFO L225 Difference]: With dead ends: 33 [2020-12-22 19:00:46,190 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 19:00:46,191 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 19:00:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 19:00:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-22 19:00:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:00:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-12-22 19:00:46,196 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 7 [2020-12-22 19:00:46,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:46,197 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-12-22 19:00:46,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-12-22 19:00:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:00:46,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:46,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:46,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:00:46,198 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:46,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2020-12-22 19:00:46,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:46,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572950000] [2020-12-22 19:00:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:46,243 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 19:00:46,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572950000] [2020-12-22 19:00:46,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:46,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:46,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062187367] [2020-12-22 19:00:46,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:46,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:46,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:46,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:46,246 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2020-12-22 19:00:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:46,268 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-12-22 19:00:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:46,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 19:00:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:46,270 INFO L225 Difference]: With dead ends: 59 [2020-12-22 19:00:46,270 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 19:00:46,271 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 19:00:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 19:00:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 36. [2020-12-22 19:00:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 19:00:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-12-22 19:00:46,277 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 7 [2020-12-22 19:00:46,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:46,278 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-12-22 19:00:46,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:46,278 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-12-22 19:00:46,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:00:46,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:46,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:46,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:00:46,280 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:46,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2020-12-22 19:00:46,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:46,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708289953] [2020-12-22 19:00:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:46,339 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 19:00:46,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708289953] [2020-12-22 19:00:46,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:46,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:46,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757084927] [2020-12-22 19:00:46,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:46,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:46,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:46,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:46,343 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 5 states. [2020-12-22 19:00:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:46,410 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-12-22 19:00:46,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:46,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-22 19:00:46,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:46,412 INFO L225 Difference]: With dead ends: 63 [2020-12-22 19:00:46,412 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 19:00:46,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 19:00:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 38. [2020-12-22 19:00:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-22 19:00:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-12-22 19:00:46,418 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 7 [2020-12-22 19:00:46,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:46,419 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-12-22 19:00:46,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-12-22 19:00:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:00:46,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:46,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:46,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:00:46,420 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:46,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:46,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1954751785, now seen corresponding path program 1 times [2020-12-22 19:00:46,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:46,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788618048] [2020-12-22 19:00:46,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:46,519 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 19:00:46,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788618048] [2020-12-22 19:00:46,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:46,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:46,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098082369] [2020-12-22 19:00:46,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:00:46,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:46,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:00:46,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:46,524 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 6 states. [2020-12-22 19:00:46,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:46,647 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-12-22 19:00:46,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:00:46,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 19:00:46,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:46,649 INFO L225 Difference]: With dead ends: 39 [2020-12-22 19:00:46,649 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 19:00:46,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:00:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 19:00:46,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-12-22 19:00:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 19:00:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-12-22 19:00:46,654 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 11 [2020-12-22 19:00:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:46,654 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-12-22 19:00:46,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:00:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-12-22 19:00:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:00:46,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:46,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:46,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:00:46,656 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:46,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1954751784, now seen corresponding path program 1 times [2020-12-22 19:00:46,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:46,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529437333] [2020-12-22 19:00:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:46,767 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 19:00:46,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529437333] [2020-12-22 19:00:46,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:46,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:00:46,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924421190] [2020-12-22 19:00:46,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:00:46,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:46,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:00:46,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:00:46,772 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 8 states. [2020-12-22 19:00:46,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:46,914 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-12-22 19:00:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:00:46,915 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-22 19:00:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:46,918 INFO L225 Difference]: With dead ends: 43 [2020-12-22 19:00:46,918 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 19:00:46,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:00:46,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 19:00:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-12-22 19:00:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 19:00:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-12-22 19:00:46,935 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 11 [2020-12-22 19:00:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:46,936 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-12-22 19:00:46,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:00:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-12-22 19:00:46,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:00:46,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:46,937 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:46,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:00:46,937 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:46,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:46,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2020-12-22 19:00:46,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:46,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335399652] [2020-12-22 19:00:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:47,031 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 19:00:47,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335399652] [2020-12-22 19:00:47,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643129911] [2020-12-22 19:00:47,032 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 19:00:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:47,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:00:47,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:47,206 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:47,206 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 19:00:47,209 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:47,228 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-22 19:00:47,231 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 19:00:47,231 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-22 19:00:47,285 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 19:00:47,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:47,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 19:00:47,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538458095] [2020-12-22 19:00:47,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:00:47,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:47,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:00:47,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:00:47,287 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 6 states. [2020-12-22 19:00:47,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:47,376 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-12-22 19:00:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:47,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 19:00:47,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:47,377 INFO L225 Difference]: With dead ends: 64 [2020-12-22 19:00:47,377 INFO L226 Difference]: Without dead ends: 64 [2020-12-22 19:00:47,378 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 19:00:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-22 19:00:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 36. [2020-12-22 19:00:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 19:00:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-12-22 19:00:47,381 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 11 [2020-12-22 19:00:47,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:47,382 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-12-22 19:00:47,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:00:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-12-22 19:00:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:00:47,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:47,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:47,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 19:00:47,598 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:47,600 INFO L82 PathProgramCache]: Analyzing trace with hash -466410634, now seen corresponding path program 1 times [2020-12-22 19:00:47,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:47,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111668395] [2020-12-22 19:00:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:47,703 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 19:00:47,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111668395] [2020-12-22 19:00:47,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:47,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:47,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876484056] [2020-12-22 19:00:47,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:47,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:47,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:47,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:47,706 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-12-22 19:00:47,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:47,739 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-12-22 19:00:47,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:47,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 19:00:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:47,740 INFO L225 Difference]: With dead ends: 73 [2020-12-22 19:00:47,741 INFO L226 Difference]: Without dead ends: 73 [2020-12-22 19:00:47,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:00:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-22 19:00:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2020-12-22 19:00:47,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:00:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-12-22 19:00:47,746 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 12 [2020-12-22 19:00:47,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:47,746 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-12-22 19:00:47,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-12-22 19:00:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:00:47,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:47,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:47,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:00:47,748 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:47,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:47,748 INFO L82 PathProgramCache]: Analyzing trace with hash -467763174, now seen corresponding path program 1 times [2020-12-22 19:00:47,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:47,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843680517] [2020-12-22 19:00:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:47,834 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 19:00:47,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843680517] [2020-12-22 19:00:47,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:47,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:00:47,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980396959] [2020-12-22 19:00:47,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:00:47,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:00:47,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:47,837 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2020-12-22 19:00:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:47,913 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-12-22 19:00:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:00:47,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-22 19:00:47,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:47,914 INFO L225 Difference]: With dead ends: 47 [2020-12-22 19:00:47,914 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 19:00:47,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:00:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 19:00:47,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-12-22 19:00:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:00:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-12-22 19:00:47,919 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 12 [2020-12-22 19:00:47,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:47,919 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-12-22 19:00:47,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:00:47,919 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-12-22 19:00:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:00:47,920 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:47,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:47,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:00:47,921 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:47,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:47,921 INFO L82 PathProgramCache]: Analyzing trace with hash -467763173, now seen corresponding path program 1 times [2020-12-22 19:00:47,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:47,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095202385] [2020-12-22 19:00:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:47,995 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 19:00:47,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095202385] [2020-12-22 19:00:47,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:47,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:00:47,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247903912] [2020-12-22 19:00:47,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:00:47,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:47,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:00:47,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:47,998 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 7 states. [2020-12-22 19:00:48,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:48,082 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-12-22 19:00:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:00:48,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-22 19:00:48,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:48,083 INFO L225 Difference]: With dead ends: 47 [2020-12-22 19:00:48,084 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 19:00:48,084 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 19:00:48,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 19:00:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-12-22 19:00:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:00:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-12-22 19:00:48,099 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 12 [2020-12-22 19:00:48,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:48,102 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-12-22 19:00:48,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:00:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-12-22 19:00:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:00:48,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:48,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:48,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:00:48,104 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:48,104 INFO L82 PathProgramCache]: Analyzing trace with hash 213647736, now seen corresponding path program 1 times [2020-12-22 19:00:48,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:48,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93483835] [2020-12-22 19:00:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:48,186 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 19:00:48,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93483835] [2020-12-22 19:00:48,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:48,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:48,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494202023] [2020-12-22 19:00:48,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:48,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:48,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:48,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:48,189 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 5 states. [2020-12-22 19:00:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:48,218 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-12-22 19:00:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:48,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 19:00:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:48,220 INFO L225 Difference]: With dead ends: 49 [2020-12-22 19:00:48,220 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 19:00:48,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 19:00:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 19:00:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2020-12-22 19:00:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 19:00:48,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-12-22 19:00:48,229 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 12 [2020-12-22 19:00:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:48,230 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-12-22 19:00:48,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-12-22 19:00:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:00:48,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:48,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:48,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:00:48,232 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:48,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:48,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1302901600, now seen corresponding path program 1 times [2020-12-22 19:00:48,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:48,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29386353] [2020-12-22 19:00:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:48,313 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 19:00:48,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29386353] [2020-12-22 19:00:48,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:48,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:00:48,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248089078] [2020-12-22 19:00:48,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:48,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:48,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:48,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:48,315 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2020-12-22 19:00:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:48,365 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-12-22 19:00:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:00:48,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 19:00:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:48,366 INFO L225 Difference]: With dead ends: 35 [2020-12-22 19:00:48,367 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 19:00:48,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 19:00:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-22 19:00:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 19:00:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-12-22 19:00:48,371 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2020-12-22 19:00:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:48,372 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-12-22 19:00:48,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:48,372 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-12-22 19:00:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:00:48,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:48,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:48,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:00:48,375 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:48,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:48,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1302901599, now seen corresponding path program 1 times [2020-12-22 19:00:48,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:48,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986953370] [2020-12-22 19:00:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:48,493 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 19:00:48,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986953370] [2020-12-22 19:00:48,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:48,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:48,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400672364] [2020-12-22 19:00:48,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:48,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:48,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:48,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:48,497 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2020-12-22 19:00:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:48,563 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-12-22 19:00:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:48,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 19:00:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:48,566 INFO L225 Difference]: With dead ends: 69 [2020-12-22 19:00:48,567 INFO L226 Difference]: Without dead ends: 69 [2020-12-22 19:00:48,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:48,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-22 19:00:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2020-12-22 19:00:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 19:00:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-12-22 19:00:48,577 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 16 [2020-12-22 19:00:48,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:48,579 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-12-22 19:00:48,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-12-22 19:00:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:00:48,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:48,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:48,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:00:48,580 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:48,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:48,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1889707613, now seen corresponding path program 1 times [2020-12-22 19:00:48,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:48,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926772635] [2020-12-22 19:00:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:48,788 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 19:00:48,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926772635] [2020-12-22 19:00:48,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:48,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 19:00:48,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235752672] [2020-12-22 19:00:48,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:00:48,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:48,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:00:48,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:00:48,790 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 10 states. [2020-12-22 19:00:49,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:49,032 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-12-22 19:00:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:00:49,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-22 19:00:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:49,034 INFO L225 Difference]: With dead ends: 57 [2020-12-22 19:00:49,034 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 19:00:49,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:00:49,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 19:00:49,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-12-22 19:00:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 19:00:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-12-22 19:00:49,038 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 16 [2020-12-22 19:00:49,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:49,038 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-12-22 19:00:49,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:00:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-12-22 19:00:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:00:49,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:49,039 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:49,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:00:49,040 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:49,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1717205610, now seen corresponding path program 1 times [2020-12-22 19:00:49,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:49,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802040698] [2020-12-22 19:00:49,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:49,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802040698] [2020-12-22 19:00:49,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:49,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:00:49,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705476745] [2020-12-22 19:00:49,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:00:49,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:49,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:00:49,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:00:49,095 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 5 states. [2020-12-22 19:00:49,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:49,138 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-12-22 19:00:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:00:49,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-22 19:00:49,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:49,139 INFO L225 Difference]: With dead ends: 61 [2020-12-22 19:00:49,139 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 19:00:49,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:00:49,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 19:00:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2020-12-22 19:00:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-22 19:00:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-12-22 19:00:49,142 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 17 [2020-12-22 19:00:49,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:49,142 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-12-22 19:00:49,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:00:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-12-22 19:00:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:00:49,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:49,143 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:49,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:00:49,144 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:49,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1566644436, now seen corresponding path program 1 times [2020-12-22 19:00:49,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:49,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098516059] [2020-12-22 19:00:49,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:49,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098516059] [2020-12-22 19:00:49,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:49,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 19:00:49,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286933575] [2020-12-22 19:00:49,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:00:49,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:49,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:00:49,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:00:49,242 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 9 states. [2020-12-22 19:00:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:49,379 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-12-22 19:00:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:00:49,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-22 19:00:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:49,380 INFO L225 Difference]: With dead ends: 85 [2020-12-22 19:00:49,381 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 19:00:49,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:00:49,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 19:00:49,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2020-12-22 19:00:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-22 19:00:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2020-12-22 19:00:49,384 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 17 [2020-12-22 19:00:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:49,384 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2020-12-22 19:00:49,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:00:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2020-12-22 19:00:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:00:49,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:49,385 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:49,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:00:49,385 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:49,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:49,386 INFO L82 PathProgramCache]: Analyzing trace with hash 286780758, now seen corresponding path program 1 times [2020-12-22 19:00:49,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:49,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289700486] [2020-12-22 19:00:49,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:49,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289700486] [2020-12-22 19:00:49,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:49,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 19:00:49,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612952644] [2020-12-22 19:00:49,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:00:49,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:49,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:00:49,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:00:49,506 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand 10 states. [2020-12-22 19:00:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:49,650 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2020-12-22 19:00:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:00:49,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-22 19:00:49,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:49,651 INFO L225 Difference]: With dead ends: 107 [2020-12-22 19:00:49,651 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 19:00:49,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:00:49,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 19:00:49,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 73. [2020-12-22 19:00:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 19:00:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-12-22 19:00:49,659 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 17 [2020-12-22 19:00:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:49,662 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-12-22 19:00:49,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:00:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-12-22 19:00:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:00:49,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:49,663 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 19:00:49,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:00:49,663 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:49,664 INFO L82 PathProgramCache]: Analyzing trace with hash 2041976217, now seen corresponding path program 1 times [2020-12-22 19:00:49,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:49,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662506747] [2020-12-22 19:00:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:49,726 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 19:00:49,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662506747] [2020-12-22 19:00:49,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:00:49,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:00:49,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528207508] [2020-12-22 19:00:49,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:00:49,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:49,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:00:49,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:00:49,731 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 4 states. [2020-12-22 19:00:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:49,747 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-12-22 19:00:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:00:49,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-22 19:00:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:49,748 INFO L225 Difference]: With dead ends: 72 [2020-12-22 19:00:49,748 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 19:00:49,748 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 19:00:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 19:00:49,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-22 19:00:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 19:00:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-12-22 19:00:49,751 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 18 [2020-12-22 19:00:49,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:49,751 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-12-22 19:00:49,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:00:49,752 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-12-22 19:00:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:00:49,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:49,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:49,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:00:49,753 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:49,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:49,753 INFO L82 PathProgramCache]: Analyzing trace with hash -2012971173, now seen corresponding path program 1 times [2020-12-22 19:00:49,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:49,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754476944] [2020-12-22 19:00:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:50,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754476944] [2020-12-22 19:00:50,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3527217] [2020-12-22 19:00:50,072 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 19:00:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:50,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-22 19:00:50,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:50,205 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_15|], 1=[|v_#valid_22|]} [2020-12-22 19:00:50,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:50,213 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 19:00:50,215 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:50,223 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:50,233 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 19:00:50,238 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:50,246 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:50,249 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 19:00:50,249 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-22 19:00:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:50,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:50,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2020-12-22 19:00:50,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065540094] [2020-12-22 19:00:50,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 19:00:50,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:50,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 19:00:50,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:00:50,636 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 22 states. [2020-12-22 19:00:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:51,726 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-22 19:00:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 19:00:51,728 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 20 [2020-12-22 19:00:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:51,728 INFO L225 Difference]: With dead ends: 53 [2020-12-22 19:00:51,728 INFO L226 Difference]: Without dead ends: 31 [2020-12-22 19:00:51,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=178, Invalid=1012, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 19:00:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-22 19:00:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-12-22 19:00:51,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 19:00:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-22 19:00:51,731 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 20 [2020-12-22 19:00:51,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:51,731 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-22 19:00:51,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 19:00:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-22 19:00:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:00:51,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:51,732 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:51,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:51,935 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:51,936 INFO L82 PathProgramCache]: Analyzing trace with hash -718716967, now seen corresponding path program 1 times [2020-12-22 19:00:51,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:51,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29057488] [2020-12-22 19:00:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:52,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29057488] [2020-12-22 19:00:52,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276648335] [2020-12-22 19:00:52,055 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 19:00:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:52,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 19:00:52,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:52,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:52,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2020-12-22 19:00:52,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213947279] [2020-12-22 19:00:52,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:00:52,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:52,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:00:52,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:00:52,268 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 17 states. [2020-12-22 19:00:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:52,512 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-12-22 19:00:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:00:52,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21 [2020-12-22 19:00:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:52,516 INFO L225 Difference]: With dead ends: 40 [2020-12-22 19:00:52,516 INFO L226 Difference]: Without dead ends: 40 [2020-12-22 19:00:52,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:00:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-22 19:00:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2020-12-22 19:00:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 19:00:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-12-22 19:00:52,518 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 21 [2020-12-22 19:00:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:52,518 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-12-22 19:00:52,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:00:52,519 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-12-22 19:00:52,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:00:52,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:52,519 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] [2020-12-22 19:00:52,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:52,732 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:52,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:52,733 INFO L82 PathProgramCache]: Analyzing trace with hash -805389510, now seen corresponding path program 1 times [2020-12-22 19:00:52,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:52,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375679876] [2020-12-22 19:00:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:52,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375679876] [2020-12-22 19:00:52,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635341619] [2020-12-22 19:00:52,897 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 19:00:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:52,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 19:00:52,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:52,986 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_16|], 1=[|v_#valid_23|]} [2020-12-22 19:00:52,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:52,990 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 19:00:52,991 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:52,998 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:53,002 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 19:00:53,004 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:53,011 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:53,013 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 19:00:53,013 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-22 19:00:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:00:53,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:53,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-12-22 19:00:53,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007416401] [2020-12-22 19:00:53,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:00:53,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:53,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:00:53,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:00:53,230 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 19 states. [2020-12-22 19:00:53,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:53,631 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-12-22 19:00:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:00:53,632 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-12-22 19:00:53,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:53,632 INFO L225 Difference]: With dead ends: 36 [2020-12-22 19:00:53,632 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 19:00:53,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2020-12-22 19:00:53,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 19:00:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-12-22 19:00:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 19:00:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-22 19:00:53,635 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 22 [2020-12-22 19:00:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:53,635 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-22 19:00:53,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:00:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-22 19:00:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:00:53,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:53,636 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] [2020-12-22 19:00:53,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:53,846 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:53,847 INFO L82 PathProgramCache]: Analyzing trace with hash -279519168, now seen corresponding path program 1 times [2020-12-22 19:00:53,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:53,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467244202] [2020-12-22 19:00:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:54,080 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 19:00:54,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467244202] [2020-12-22 19:00:54,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383601225] [2020-12-22 19:00:54,081 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 19:00:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:54,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-22 19:00:54,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:54,289 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_17|], 1=[|v_#valid_24|]} [2020-12-22 19:00:54,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:54,294 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 19:00:54,294 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:54,301 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:54,305 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 19:00:54,306 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:54,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:54,313 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 19:00:54,314 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2020-12-22 19:00:54,563 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 19:00:54,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:54,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-22 19:00:54,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481145029] [2020-12-22 19:00:54,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:00:54,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:54,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:00:54,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:00:54,565 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 19 states. [2020-12-22 19:00:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:55,354 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-12-22 19:00:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:00:55,357 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 26 [2020-12-22 19:00:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:55,358 INFO L225 Difference]: With dead ends: 40 [2020-12-22 19:00:55,358 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 19:00:55,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 19:00:55,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 19:00:55,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-12-22 19:00:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 19:00:55,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-12-22 19:00:55,360 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2020-12-22 19:00:55,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:55,361 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-12-22 19:00:55,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:00:55,361 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-12-22 19:00:55,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:00:55,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:55,362 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:55,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 19:00:55,577 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:55,579 INFO L82 PathProgramCache]: Analyzing trace with hash -57121321, now seen corresponding path program 2 times [2020-12-22 19:00:55,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:55,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321009249] [2020-12-22 19:00:55,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:55,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321009249] [2020-12-22 19:00:55,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260117113] [2020-12-22 19:00:55,835 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 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 19:00:55,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:00:55,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:55,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-22 19:00:55,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:55,916 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_18|], 1=[|v_#valid_25|]} [2020-12-22 19:00:55,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:55,920 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 19:00:55,922 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:55,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:55,933 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 19:00:55,934 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:55,941 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:55,942 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 19:00:55,942 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-22 19:00:56,004 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 19:00:56,005 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:56,010 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:56,010 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:56,011 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-22 19:00:56,269 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 19:00:56,271 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:56,282 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:56,286 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 19:00:56,286 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:29 [2020-12-22 19:00:56,436 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:56,436 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 22 treesize of output 22 [2020-12-22 19:00:56,437 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:00:56,448 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:56,450 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:00:56,454 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:00:56,454 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:35 [2020-12-22 19:00:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:00:56,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:56,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2020-12-22 19:00:56,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584227133] [2020-12-22 19:00:56,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 19:00:56,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:56,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 19:00:56,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2020-12-22 19:00:56,604 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 26 states. [2020-12-22 19:00:57,370 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-12-22 19:00:58,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:00:58,773 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-12-22 19:00:58,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 19:00:58,773 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 27 [2020-12-22 19:00:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:00:58,774 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:00:58,774 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 19:00:58,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=323, Invalid=2227, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 19:00:58,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 19:00:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2020-12-22 19:00:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 19:00:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-12-22 19:00:58,776 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 27 [2020-12-22 19:00:58,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:00:58,777 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-12-22 19:00:58,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 19:00:58,777 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-12-22 19:00:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:00:58,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:00:58,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:00:58,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:58,992 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:00:58,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:00:58,993 INFO L82 PathProgramCache]: Analyzing trace with hash 614687385, now seen corresponding path program 2 times [2020-12-22 19:00:58,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:00:58,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320574620] [2020-12-22 19:00:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:00:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:00:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:59,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320574620] [2020-12-22 19:00:59,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271255438] [2020-12-22 19:00:59,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:00:59,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:00:59,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:00:59,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 19:00:59,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:00:59,454 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_19|], 1=[|v_#valid_26|]} [2020-12-22 19:00:59,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:00:59,461 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 19:00:59,461 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:59,469 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:59,473 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 19:00:59,476 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:00:59,502 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:00:59,504 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 19:00:59,504 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2020-12-22 19:00:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:00:59,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:00:59,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2020-12-22 19:00:59,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479450716] [2020-12-22 19:00:59,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 19:00:59,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:00:59,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 19:00:59,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:00:59,979 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 25 states. [2020-12-22 19:01:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:00,994 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-12-22 19:01:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:01:00,995 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2020-12-22 19:01:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:00,995 INFO L225 Difference]: With dead ends: 48 [2020-12-22 19:01:00,995 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 19:01:00,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 19:01:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 19:01:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-12-22 19:01:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:01:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-22 19:01:00,998 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 32 [2020-12-22 19:01:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:00,998 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-22 19:01:00,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 19:01:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-22 19:01:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 19:01:00,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:00,999 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:01,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:01,202 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:01,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1981775400, now seen corresponding path program 3 times [2020-12-22 19:01:01,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:01,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996254516] [2020-12-22 19:01:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:01,524 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:01,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996254516] [2020-12-22 19:01:01,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647492528] [2020-12-22 19:01:01,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:01,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 19:01:01,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:01,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-22 19:01:01,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:01,806 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 19:01:01,807 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:01,810 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:01,810 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:01,810 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-22 19:01:01,955 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 19:01:01,956 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:01,962 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:01,964 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 19:01:01,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-22 19:01:02,161 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 22 treesize of output 21 [2020-12-22 19:01:02,163 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:02,171 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:02,172 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:02,173 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-22 19:01:02,238 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 19 treesize of output 18 [2020-12-22 19:01:02,240 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:02,245 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:02,246 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 19:01:02,246 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:12 [2020-12-22 19:01:02,284 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 19:01:02,285 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:02,286 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:02,286 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 19:01:02,287 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-22 19:01:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:02,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:02,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 29 [2020-12-22 19:01:02,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983410914] [2020-12-22 19:01:02,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-22 19:01:02,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:02,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-22 19:01:02,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-12-22 19:01:02,298 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 29 states. [2020-12-22 19:01:03,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:03,098 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-12-22 19:01:03,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:01:03,099 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 37 [2020-12-22 19:01:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:03,099 INFO L225 Difference]: With dead ends: 72 [2020-12-22 19:01:03,099 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 19:01:03,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=205, Invalid=1435, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 19:01:03,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 19:01:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-12-22 19:01:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:01:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-12-22 19:01:03,102 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 37 [2020-12-22 19:01:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:03,102 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-12-22 19:01:03,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-22 19:01:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-12-22 19:01:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 19:01:03,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:03,103 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:03,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:01:03,319 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:03,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:03,320 INFO L82 PathProgramCache]: Analyzing trace with hash 207254747, now seen corresponding path program 4 times [2020-12-22 19:01:03,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:03,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616423130] [2020-12-22 19:01:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:03,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616423130] [2020-12-22 19:01:03,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821969776] [2020-12-22 19:01:03,514 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 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 19:01:03,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:01:03,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:03,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-22 19:01:03,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:03,628 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:03,629 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 19:01:03,630 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:03,646 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-22 19:01:03,650 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 19:01:03,651 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-22 19:01:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:03,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:03,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2020-12-22 19:01:03,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785650918] [2020-12-22 19:01:03,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 19:01:03,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:03,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 19:01:03,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:01:03,967 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 25 states. [2020-12-22 19:01:04,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:04,461 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-12-22 19:01:04,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:01:04,461 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 41 [2020-12-22 19:01:04,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:04,462 INFO L225 Difference]: With dead ends: 51 [2020-12-22 19:01:04,462 INFO L226 Difference]: Without dead ends: 51 [2020-12-22 19:01:04,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 19:01:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-22 19:01:04,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-12-22 19:01:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:01:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-12-22 19:01:04,465 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 41 [2020-12-22 19:01:04,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:04,465 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-12-22 19:01:04,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 19:01:04,465 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-12-22 19:01:04,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 19:01:04,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:04,469 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:04,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 19:01:04,679 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:04,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1595560281, now seen corresponding path program 5 times [2020-12-22 19:01:04,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:04,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968947223] [2020-12-22 19:01:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:05,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968947223] [2020-12-22 19:01:05,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002809857] [2020-12-22 19:01:05,148 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 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 19:01:05,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-22 19:01:05,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:05,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 85 conjunts are in the unsatisfiable core [2020-12-22 19:01:05,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:05,537 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 19:01:05,539 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:05,543 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:05,543 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:05,544 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-22 19:01:05,620 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 19:01:05,621 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:05,628 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:05,629 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 19:01:05,629 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2020-12-22 19:01:05,689 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 19 treesize of output 18 [2020-12-22 19:01:05,690 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:05,696 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:05,697 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 19:01:05,698 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:15 [2020-12-22 19:01:05,774 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 19 treesize of output 18 [2020-12-22 19:01:05,775 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:05,781 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:05,783 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 19:01:05,783 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:15 [2020-12-22 19:01:05,857 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 19 treesize of output 18 [2020-12-22 19:01:05,858 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:05,865 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:05,866 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 19:01:05,867 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:15 [2020-12-22 19:01:05,933 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 19:01:05,934 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:05,936 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:05,936 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:05,936 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-22 19:01:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:05,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:05,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 30 [2020-12-22 19:01:05,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893480335] [2020-12-22 19:01:05,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 19:01:05,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:05,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 19:01:05,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:01:05,951 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 30 states. [2020-12-22 19:01:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:06,943 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-12-22 19:01:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 19:01:06,944 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 47 [2020-12-22 19:01:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:06,945 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:01:06,945 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 19:01:06,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=194, Invalid=1612, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 19:01:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 19:01:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-12-22 19:01:06,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 19:01:06,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-12-22 19:01:06,949 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 47 [2020-12-22 19:01:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:06,949 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-12-22 19:01:06,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 19:01:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-12-22 19:01:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 19:01:06,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:06,950 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:07,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 19:01:07,160 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:07,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1297179492, now seen corresponding path program 6 times [2020-12-22 19:01:07,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:07,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419992266] [2020-12-22 19:01:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:07,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419992266] [2020-12-22 19:01:07,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715615811] [2020-12-22 19:01:07,406 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 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 19:01:07,592 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-22 19:01:07,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:07,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-22 19:01:07,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:07,619 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:07,619 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 19:01:07,620 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:07,636 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-22 19:01:07,638 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 19:01:07,639 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-22 19:01:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:07,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:07,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 21 [2020-12-22 19:01:07,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035663740] [2020-12-22 19:01:07,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 19:01:07,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:07,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 19:01:07,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:01:07,825 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 22 states. [2020-12-22 19:01:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:08,338 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-12-22 19:01:08,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:01:08,339 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-12-22 19:01:08,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:08,340 INFO L225 Difference]: With dead ends: 62 [2020-12-22 19:01:08,340 INFO L226 Difference]: Without dead ends: 62 [2020-12-22 19:01:08,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-12-22 19:01:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-22 19:01:08,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-12-22 19:01:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 19:01:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-12-22 19:01:08,343 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 51 [2020-12-22 19:01:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:08,343 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-12-22 19:01:08,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 19:01:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-12-22 19:01:08,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 19:01:08,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:08,344 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:08,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 19:01:08,550 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:08,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:08,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1557858601, now seen corresponding path program 3 times [2020-12-22 19:01:08,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:08,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905086634] [2020-12-22 19:01:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:01:08,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905086634] [2020-12-22 19:01:08,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955607845] [2020-12-22 19:01:08,932 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 19:01:09,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-22 19:01:09,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:09,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 99 conjunts are in the unsatisfiable core [2020-12-22 19:01:09,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:09,100 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_29|]} [2020-12-22 19:01:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:01:09,103 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 19:01:09,104 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:09,110 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:09,113 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 19:01:09,115 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:09,120 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:09,122 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 19:01:09,122 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:13 [2020-12-22 19:01:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 19:01:09,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:09,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2020-12-22 19:01:09,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023690627] [2020-12-22 19:01:09,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-22 19:01:09,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:09,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-22 19:01:09,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2020-12-22 19:01:09,696 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 32 states. [2020-12-22 19:01:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:10,916 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2020-12-22 19:01:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 19:01:10,916 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 52 [2020-12-22 19:01:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:10,917 INFO L225 Difference]: With dead ends: 60 [2020-12-22 19:01:10,917 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 19:01:10,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=294, Invalid=2462, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 19:01:10,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 19:01:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-12-22 19:01:10,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 19:01:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-12-22 19:01:10,921 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 52 [2020-12-22 19:01:10,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:10,921 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-12-22 19:01:10,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-22 19:01:10,921 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-12-22 19:01:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 19:01:10,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:10,922 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:11,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 19:01:11,125 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:11,126 INFO L82 PathProgramCache]: Analyzing trace with hash -351804326, now seen corresponding path program 7 times [2020-12-22 19:01:11,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:11,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093657581] [2020-12-22 19:01:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:11,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093657581] [2020-12-22 19:01:11,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716678652] [2020-12-22 19:01:11,733 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 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 19:01:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:11,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 93 conjunts are in the unsatisfiable core [2020-12-22 19:01:11,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:11,841 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 19:01:11,843 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:11,846 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:11,846 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:11,846 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-22 19:01:12,102 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 19:01:12,102 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:12,109 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:12,114 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 19:01:12,114 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-22 19:01:12,367 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 22 treesize of output 21 [2020-12-22 19:01:12,368 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:12,376 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:12,380 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:12,380 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-22 19:01:12,460 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 21 treesize of output 20 [2020-12-22 19:01:12,461 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:12,466 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:12,467 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 19:01:12,467 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:01:12,526 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 21 treesize of output 20 [2020-12-22 19:01:12,527 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:12,531 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:12,532 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 19:01:12,533 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:01:12,598 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 19 treesize of output 18 [2020-12-22 19:01:12,599 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:12,603 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:12,604 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 19:01:12,604 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-22 19:01:12,611 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 19:01:12,612 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:12,614 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:12,617 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 19:01:12,617 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-22 19:01:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:12,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:12,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22] total 40 [2020-12-22 19:01:12,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570184392] [2020-12-22 19:01:12,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-22 19:01:12,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:12,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-22 19:01:12,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1453, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 19:01:12,631 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 40 states. [2020-12-22 19:01:14,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:14,092 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2020-12-22 19:01:14,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 19:01:14,093 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 57 [2020-12-22 19:01:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:14,094 INFO L225 Difference]: With dead ends: 96 [2020-12-22 19:01:14,094 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 19:01:14,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=274, Invalid=2806, Unknown=0, NotChecked=0, Total=3080 [2020-12-22 19:01:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 19:01:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2020-12-22 19:01:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 19:01:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-12-22 19:01:14,098 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 57 [2020-12-22 19:01:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:14,098 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-12-22 19:01:14,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-22 19:01:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-12-22 19:01:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 19:01:14,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:14,099 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:14,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:14,301 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:14,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:14,301 INFO L82 PathProgramCache]: Analyzing trace with hash -841664547, now seen corresponding path program 8 times [2020-12-22 19:01:14,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:14,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139905965] [2020-12-22 19:01:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:14,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139905965] [2020-12-22 19:01:14,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722953889] [2020-12-22 19:01:14,613 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 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 19:01:14,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:01:14,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:14,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 65 conjunts are in the unsatisfiable core [2020-12-22 19:01:14,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:14,711 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:14,712 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 19:01:14,713 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:14,734 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-22 19:01:14,736 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 19:01:14,737 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-22 19:01:15,251 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:15,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:15,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2020-12-22 19:01:15,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111700736] [2020-12-22 19:01:15,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-22 19:01:15,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:15,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-22 19:01:15,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 19:01:15,254 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 33 states. [2020-12-22 19:01:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:16,001 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-12-22 19:01:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:01:16,001 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 61 [2020-12-22 19:01:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:16,002 INFO L225 Difference]: With dead ends: 70 [2020-12-22 19:01:16,002 INFO L226 Difference]: Without dead ends: 70 [2020-12-22 19:01:16,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=300, Invalid=1506, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 19:01:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-22 19:01:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-12-22 19:01:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 19:01:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-12-22 19:01:16,006 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 61 [2020-12-22 19:01:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:16,006 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-12-22 19:01:16,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-22 19:01:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-12-22 19:01:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 19:01:16,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:16,007 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:16,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:16,209 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:16,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1711491803, now seen corresponding path program 9 times [2020-12-22 19:01:16,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:16,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813901409] [2020-12-22 19:01:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:16,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813901409] [2020-12-22 19:01:16,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758682087] [2020-12-22 19:01:16,995 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 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 19:01:17,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-22 19:01:17,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:17,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 147 conjunts are in the unsatisfiable core [2020-12-22 19:01:17,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:17,228 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 19:01:17,229 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:17,239 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:17,240 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:17,240 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-22 19:01:17,651 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 19:01:17,652 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:17,661 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:17,662 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 19:01:17,663 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-22 19:01:17,976 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:17,978 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:17,990 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:17,992 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 19:01:17,992 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-22 19:01:18,169 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:18,170 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:18,182 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:18,184 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 19:01:18,184 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-22 19:01:18,350 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:18,351 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:18,364 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:18,365 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 19:01:18,366 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-22 19:01:18,551 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:18,552 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:18,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:18,568 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 19:01:18,568 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-22 19:01:18,770 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:18,771 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:18,781 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:18,783 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 19:01:18,783 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-22 19:01:18,926 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:01:18,928 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:18,928 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 17 treesize of output 10 [2020-12-22 19:01:18,929 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:18,933 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:18,935 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 19:01:18,935 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2020-12-22 19:01:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:18,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:18,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25] total 52 [2020-12-22 19:01:18,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958899027] [2020-12-22 19:01:18,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-12-22 19:01:18,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:18,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-12-22 19:01:18,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2504, Unknown=0, NotChecked=0, Total=2652 [2020-12-22 19:01:18,961 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 52 states. [2020-12-22 19:01:20,029 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-12-22 19:01:20,418 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-12-22 19:01:20,784 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-22 19:01:21,136 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-22 19:01:21,489 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-22 19:01:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:21,887 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2020-12-22 19:01:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:01:21,888 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 67 [2020-12-22 19:01:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:21,888 INFO L225 Difference]: With dead ends: 112 [2020-12-22 19:01:21,889 INFO L226 Difference]: Without dead ends: 75 [2020-12-22 19:01:21,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=392, Invalid=4164, Unknown=0, NotChecked=0, Total=4556 [2020-12-22 19:01:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-22 19:01:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-12-22 19:01:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 19:01:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-12-22 19:01:21,893 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 67 [2020-12-22 19:01:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:21,893 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-12-22 19:01:21,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-12-22 19:01:21,893 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-12-22 19:01:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 19:01:21,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:21,894 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:22,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-12-22 19:01:22,108 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:22,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:22,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1133270686, now seen corresponding path program 10 times [2020-12-22 19:01:22,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:22,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258543252] [2020-12-22 19:01:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 28 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:22,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258543252] [2020-12-22 19:01:22,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043721562] [2020-12-22 19:01:22,471 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 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 19:01:22,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:01:22,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:22,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 72 conjunts are in the unsatisfiable core [2020-12-22 19:01:22,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 45 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:23,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:23,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 30 [2020-12-22 19:01:23,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751682815] [2020-12-22 19:01:23,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-22 19:01:23,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:23,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-22 19:01:23,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2020-12-22 19:01:23,105 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 31 states. [2020-12-22 19:01:24,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:24,039 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2020-12-22 19:01:24,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:01:24,040 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 71 [2020-12-22 19:01:24,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:24,041 INFO L225 Difference]: With dead ends: 80 [2020-12-22 19:01:24,041 INFO L226 Difference]: Without dead ends: 80 [2020-12-22 19:01:24,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=351, Invalid=1371, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 19:01:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-22 19:01:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-12-22 19:01:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 19:01:24,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-12-22 19:01:24,044 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 71 [2020-12-22 19:01:24,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:24,045 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-12-22 19:01:24,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-22 19:01:24,045 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-12-22 19:01:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 19:01:24,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:24,046 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:24,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:24,249 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:24,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1392415964, now seen corresponding path program 11 times [2020-12-22 19:01:24,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:24,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323164267] [2020-12-22 19:01:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 26 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:25,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323164267] [2020-12-22 19:01:25,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218585033] [2020-12-22 19:01:25,301 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 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 19:01:26,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-22 19:01:26,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:26,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 129 conjunts are in the unsatisfiable core [2020-12-22 19:01:26,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:26,048 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_32|]} [2020-12-22 19:01:26,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:01:26,053 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 19:01:26,054 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:26,063 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:26,067 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 19:01:26,069 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:26,077 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:26,078 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 19:01:26,078 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-22 19:01:26,464 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 19:01:26,465 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:26,473 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:26,473 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:26,474 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-22 19:01:26,724 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:26,725 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:26,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:26,735 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 19:01:26,735 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:01:26,881 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:26,883 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:26,892 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:26,893 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 19:01:26,893 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:01:27,041 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:27,042 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:27,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:27,054 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 19:01:27,054 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:01:27,213 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:27,214 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:27,222 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:27,224 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 19:01:27,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:01:27,401 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:27,402 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:27,410 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:27,411 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 19:01:27,412 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:01:27,596 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:27,597 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:27,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:27,607 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 19:01:27,607 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:20 [2020-12-22 19:01:27,796 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:27,796 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 19 treesize of output 19 [2020-12-22 19:01:27,798 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:01:27,806 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:27,806 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:27,807 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:19 [2020-12-22 19:01:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 45 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:28,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:28,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 27] total 60 [2020-12-22 19:01:28,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240203150] [2020-12-22 19:01:28,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-12-22 19:01:28,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:28,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-12-22 19:01:28,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=3388, Unknown=0, NotChecked=0, Total=3540 [2020-12-22 19:01:28,118 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 60 states. [2020-12-22 19:01:30,262 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-22 19:01:35,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:35,069 INFO L93 Difference]: Finished difference Result 136 states and 137 transitions. [2020-12-22 19:01:35,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-22 19:01:35,070 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 77 [2020-12-22 19:01:35,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:35,071 INFO L225 Difference]: With dead ends: 136 [2020-12-22 19:01:35,071 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 19:01:35,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=868, Invalid=10904, Unknown=0, NotChecked=0, Total=11772 [2020-12-22 19:01:35,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 19:01:35,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2020-12-22 19:01:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:01:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-12-22 19:01:35,075 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 77 [2020-12-22 19:01:35,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:35,075 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-12-22 19:01:35,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-12-22 19:01:35,076 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-12-22 19:01:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 19:01:35,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:35,077 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:35,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-22 19:01:35,278 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:35,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:35,278 INFO L82 PathProgramCache]: Analyzing trace with hash -2138844579, now seen corresponding path program 12 times [2020-12-22 19:01:35,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:35,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340801754] [2020-12-22 19:01:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 30 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:36,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340801754] [2020-12-22 19:01:36,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791728909] [2020-12-22 19:01:36,513 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 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 19:01:37,067 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-22 19:01:37,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:37,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 182 conjunts are in the unsatisfiable core [2020-12-22 19:01:37,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:37,084 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 19:01:37,085 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:37,093 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:37,094 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:37,094 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-22 19:01:37,709 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 19:01:37,709 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:37,720 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:37,722 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 19:01:37,722 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-22 19:01:38,083 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:38,084 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:38,096 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:38,097 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 19:01:38,097 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-22 19:01:38,299 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:38,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:38,311 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:38,313 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 19:01:38,313 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-22 19:01:38,519 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:38,520 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:38,534 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:38,536 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 19:01:38,536 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-22 19:01:38,749 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:38,750 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:38,762 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:38,763 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 19:01:38,763 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-22 19:01:38,975 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:38,976 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:38,988 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:38,990 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 19:01:38,990 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-22 19:01:39,216 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 21 treesize of output 20 [2020-12-22 19:01:39,217 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:39,229 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:39,231 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 19:01:39,231 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-22 19:01:39,454 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:01:39,455 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:39,467 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:39,469 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:39,469 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:22 [2020-12-22 19:01:39,663 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:01:39,665 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:39,665 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 17 treesize of output 10 [2020-12-22 19:01:39,666 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:39,671 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:39,672 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 19:01:39,672 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2020-12-22 19:01:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 30 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:39,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:39,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31] total 66 [2020-12-22 19:01:39,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067404105] [2020-12-22 19:01:39,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-12-22 19:01:39,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:39,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-12-22 19:01:39,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=4100, Unknown=0, NotChecked=0, Total=4290 [2020-12-22 19:01:39,723 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 66 states. [2020-12-22 19:01:41,347 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-12-22 19:01:41,794 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-12-22 19:01:42,223 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-12-22 19:01:42,653 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-12-22 19:01:43,080 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-12-22 19:01:43,516 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-12-22 19:01:43,937 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-22 19:01:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:44,465 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2020-12-22 19:01:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 19:01:44,466 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 87 [2020-12-22 19:01:44,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:44,467 INFO L225 Difference]: With dead ends: 144 [2020-12-22 19:01:44,467 INFO L226 Difference]: Without dead ends: 95 [2020-12-22 19:01:44,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=502, Invalid=6808, Unknown=0, NotChecked=0, Total=7310 [2020-12-22 19:01:44,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-22 19:01:44,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2020-12-22 19:01:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 19:01:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2020-12-22 19:01:44,471 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 87 [2020-12-22 19:01:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:44,471 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2020-12-22 19:01:44,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-12-22 19:01:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2020-12-22 19:01:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 19:01:44,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:44,472 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:44,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 19:01:44,686 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:44,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:44,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1788632736, now seen corresponding path program 13 times [2020-12-22 19:01:44,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:44,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507340822] [2020-12-22 19:01:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 66 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:45,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507340822] [2020-12-22 19:01:45,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629896756] [2020-12-22 19:01:45,220 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 19:01:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:45,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 90 conjunts are in the unsatisfiable core [2020-12-22 19:01:45,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 91 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:45,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:45,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 36 [2020-12-22 19:01:45,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907325469] [2020-12-22 19:01:45,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-22 19:01:45,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:45,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-22 19:01:45,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 19:01:45,877 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 37 states. [2020-12-22 19:01:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:47,160 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2020-12-22 19:01:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 19:01:47,161 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 91 [2020-12-22 19:01:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:47,162 INFO L225 Difference]: With dead ends: 100 [2020-12-22 19:01:47,162 INFO L226 Difference]: Without dead ends: 100 [2020-12-22 19:01:47,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=498, Invalid=1952, Unknown=0, NotChecked=0, Total=2450 [2020-12-22 19:01:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-22 19:01:47,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-12-22 19:01:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-22 19:01:47,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-12-22 19:01:47,167 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 91 [2020-12-22 19:01:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:47,167 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-12-22 19:01:47,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-22 19:01:47,167 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-12-22 19:01:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 19:01:47,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:47,168 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:47,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 19:01:47,379 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:01:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1984621730, now seen corresponding path program 14 times [2020-12-22 19:01:47,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:47,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656371577] [2020-12-22 19:01:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 34 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:48,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656371577] [2020-12-22 19:01:48,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260923682] [2020-12-22 19:01:48,991 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 19:01:49,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:01:49,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:01:49,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 152 conjunts are in the unsatisfiable core [2020-12-22 19:01:49,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:49,121 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_25|], 1=[|v_#valid_34|]} [2020-12-22 19:01:49,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:01:49,125 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 19:01:49,126 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:49,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:49,141 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 19:01:49,142 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:49,152 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:49,159 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 19:01:49,159 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-22 19:01:49,837 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 19:01:49,837 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:49,846 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:49,846 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:49,847 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-22 19:01:50,388 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 19:01:50,389 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:50,404 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:50,406 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:50,406 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-22 19:01:50,689 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 19:01:50,690 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:50,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:50,705 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:50,705 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-22 19:01:50,945 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 19:01:50,947 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:50,966 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:50,968 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:50,968 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-22 19:01:51,259 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 19:01:51,260 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:51,274 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:51,275 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:51,275 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-22 19:01:51,554 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 19:01:51,555 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:51,570 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:51,571 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:51,572 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-22 19:01:51,861 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 19:01:51,864 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:51,878 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:51,880 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:51,880 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-22 19:01:52,193 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 19:01:52,195 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:52,210 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:52,212 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:01:52,212 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-22 19:01:52,517 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 19:01:52,518 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:52,533 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:52,535 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 19:01:52,535 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:29 [2020-12-22 19:01:52,872 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:52,873 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 22 treesize of output 22 [2020-12-22 19:01:52,874 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:01:52,888 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:52,889 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:01:52,890 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:52,891 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:35 [2020-12-22 19:01:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 91 proven. 263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:53,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:53,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 34] total 75 [2020-12-22 19:01:53,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109334265] [2020-12-22 19:01:53,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-12-22 19:01:53,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:53,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-12-22 19:01:53,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=5349, Unknown=0, NotChecked=0, Total=5550 [2020-12-22 19:01:53,336 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 75 states. [2020-12-22 19:01:56,527 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-22 19:01:56,912 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-12-22 19:02:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:05,652 INFO L93 Difference]: Finished difference Result 168 states and 169 transitions. [2020-12-22 19:02:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-12-22 19:02:05,653 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 97 [2020-12-22 19:02:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:05,653 INFO L225 Difference]: With dead ends: 168 [2020-12-22 19:02:05,653 INFO L226 Difference]: Without dead ends: 113 [2020-12-22 19:02:05,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2824 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=1189, Invalid=16901, Unknown=0, NotChecked=0, Total=18090 [2020-12-22 19:02:05,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-22 19:02:05,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2020-12-22 19:02:05,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 19:02:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2020-12-22 19:02:05,657 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 97 [2020-12-22 19:02:05,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:05,657 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2020-12-22 19:02:05,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-12-22 19:02:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2020-12-22 19:02:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 19:02:05,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:05,658 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:05,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 19:02:05,872 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:02:05,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:05,872 INFO L82 PathProgramCache]: Analyzing trace with hash -682858529, now seen corresponding path program 15 times [2020-12-22 19:02:05,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:05,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284362218] [2020-12-22 19:02:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 38 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:07,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284362218] [2020-12-22 19:02:07,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329678591] [2020-12-22 19:02:07,800 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 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 19:02:11,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-22 19:02:11,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:11,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 168 conjunts are in the unsatisfiable core [2020-12-22 19:02:11,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:11,194 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 19:02:11,195 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:11,198 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:11,199 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:11,199 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-22 19:02:12,024 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 19:02:12,027 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:12,034 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:12,035 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 19:02:12,035 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-22 19:02:12,441 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 22 treesize of output 21 [2020-12-22 19:02:12,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:12,451 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:12,452 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:12,453 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-22 19:02:12,588 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 21 treesize of output 20 [2020-12-22 19:02:12,589 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:12,596 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:12,597 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 19:02:12,597 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:02:12,693 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 21 treesize of output 20 [2020-12-22 19:02:12,694 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:12,700 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:12,701 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 19:02:12,701 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:02:12,801 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 21 treesize of output 20 [2020-12-22 19:02:12,802 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:12,807 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:12,809 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 19:02:12,809 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:02:12,903 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 21 treesize of output 20 [2020-12-22 19:02:12,904 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:12,910 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:12,911 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 19:02:12,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:02:13,000 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 21 treesize of output 20 [2020-12-22 19:02:13,002 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:13,007 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:13,008 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 19:02:13,008 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:02:13,109 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 21 treesize of output 20 [2020-12-22 19:02:13,110 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:13,116 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:13,117 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 19:02:13,118 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:02:13,236 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 21 treesize of output 20 [2020-12-22 19:02:13,237 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:13,244 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:13,245 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 19:02:13,245 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:02:13,344 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 19 treesize of output 18 [2020-12-22 19:02:13,345 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:13,352 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:13,356 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 19:02:13,356 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-22 19:02:13,363 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 19:02:13,364 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:13,366 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:13,366 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 19:02:13,366 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-22 19:02:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 38 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:13,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:13,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 37] total 70 [2020-12-22 19:02:13,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573951330] [2020-12-22 19:02:13,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-12-22 19:02:13,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:13,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-12-22 19:02:13,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=4638, Unknown=0, NotChecked=0, Total=4830 [2020-12-22 19:02:13,405 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 70 states. [2020-12-22 19:02:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:18,630 INFO L93 Difference]: Finished difference Result 176 states and 177 transitions. [2020-12-22 19:02:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-22 19:02:18,631 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 107 [2020-12-22 19:02:18,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:18,632 INFO L225 Difference]: With dead ends: 176 [2020-12-22 19:02:18,632 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 19:02:18,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=459, Invalid=8661, Unknown=0, NotChecked=0, Total=9120 [2020-12-22 19:02:18,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 19:02:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2020-12-22 19:02:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-22 19:02:18,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2020-12-22 19:02:18,637 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 107 [2020-12-22 19:02:18,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:18,637 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2020-12-22 19:02:18,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-12-22 19:02:18,637 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2020-12-22 19:02:18,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 19:02:18,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:18,638 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:18,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-22 19:02:18,844 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:02:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1213254494, now seen corresponding path program 16 times [2020-12-22 19:02:18,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:18,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35034725] [2020-12-22 19:02:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 120 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:19,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35034725] [2020-12-22 19:02:19,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206746739] [2020-12-22 19:02:19,629 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 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 19:02:20,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:02:20,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:20,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 113 conjunts are in the unsatisfiable core [2020-12-22 19:02:20,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 153 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:21,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:21,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 41 [2020-12-22 19:02:21,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010790891] [2020-12-22 19:02:21,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-12-22 19:02:21,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:21,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-12-22 19:02:21,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1498, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 19:02:21,014 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 42 states. [2020-12-22 19:02:22,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:22,659 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2020-12-22 19:02:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 19:02:22,660 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 111 [2020-12-22 19:02:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:22,662 INFO L225 Difference]: With dead ends: 120 [2020-12-22 19:02:22,662 INFO L226 Difference]: Without dead ends: 120 [2020-12-22 19:02:22,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=670, Invalid=2522, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 19:02:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-22 19:02:22,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-12-22 19:02:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-22 19:02:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-12-22 19:02:22,665 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 111 [2020-12-22 19:02:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:22,666 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-12-22 19:02:22,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-12-22 19:02:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-12-22 19:02:22,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 19:02:22,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:22,667 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:22,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:02:22,874 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:02:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:22,875 INFO L82 PathProgramCache]: Analyzing trace with hash 547086304, now seen corresponding path program 17 times [2020-12-22 19:02:22,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:22,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239625578] [2020-12-22 19:02:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 42 proven. 500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:25,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239625578] [2020-12-22 19:02:25,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986071123] [2020-12-22 19:02:25,127 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 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 19:02:35,025 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-22 19:02:35,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:35,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 223 conjunts are in the unsatisfiable core [2020-12-22 19:02:35,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:35,063 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 19:02:35,064 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:35,072 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:35,073 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:02:35,073 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-22 19:02:36,166 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 19:02:36,167 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:36,177 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:36,178 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 19:02:36,179 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-22 19:02:36,834 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:02:36,840 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:36,858 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:36,860 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 19:02:36,861 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-22 19:02:37,168 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:02:37,175 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:37,191 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:37,195 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 19:02:37,196 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-22 19:02:37,516 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:02:37,517 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:37,536 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:37,538 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 19:02:37,538 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-22 19:02:37,854 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:02:37,855 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:37,871 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:37,873 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 19:02:37,873 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-22 19:02:38,177 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:02:38,178 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:38,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:38,198 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 19:02:38,198 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-22 19:02:38,500 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:02:38,501 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:38,520 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:38,522 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 19:02:38,522 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-22 19:02:38,860 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:02:38,861 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:38,878 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:38,880 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 19:02:38,880 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-22 19:02:39,207 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:02:39,208 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:39,224 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:39,226 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 19:02:39,226 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-22 19:02:39,549 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:02:39,550 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:39,568 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:39,575 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:02:39,575 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:43, output treesize:26 [2020-12-22 19:02:39,866 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 21 treesize of output 20 [2020-12-22 19:02:39,868 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:39,881 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:39,883 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 19:02:39,884 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:37, output treesize:22 [2020-12-22 19:02:40,179 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:02:40,182 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:40,182 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 17 treesize of output 10 [2020-12-22 19:02:40,183 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:40,192 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:40,194 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 19:02:40,195 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2020-12-22 19:02:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 42 proven. 500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:40,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:40,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 41] total 88 [2020-12-22 19:02:40,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573443222] [2020-12-22 19:02:40,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-12-22 19:02:40,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:40,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-12-22 19:02:40,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=7404, Unknown=0, NotChecked=0, Total=7656 [2020-12-22 19:02:40,295 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 88 states. [2020-12-22 19:02:42,893 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-12-22 19:02:43,269 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-12-22 19:02:43,496 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 19:02:43,802 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-22 19:02:44,462 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-22 19:02:44,820 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 19:02:45,107 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-22 19:02:45,742 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-12-22 19:02:46,099 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 19:02:46,390 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-22 19:02:46,753 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 19:02:47,045 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-22 19:02:47,410 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 19:02:47,705 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-22 19:02:48,081 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 19:02:48,351 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-12-22 19:02:49,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:49,640 INFO L93 Difference]: Finished difference Result 192 states and 193 transitions. [2020-12-22 19:02:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-22 19:02:49,641 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 117 [2020-12-22 19:02:49,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:49,642 INFO L225 Difference]: With dead ends: 192 [2020-12-22 19:02:49,642 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 19:02:49,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3059 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=682, Invalid=12658, Unknown=0, NotChecked=0, Total=13340 [2020-12-22 19:02:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 19:02:49,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2020-12-22 19:02:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-22 19:02:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-12-22 19:02:49,647 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 117 [2020-12-22 19:02:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:49,647 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-12-22 19:02:49,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-12-22 19:02:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-12-22 19:02:49,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 19:02:49,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:49,648 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:49,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-22 19:02:49,851 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:02:49,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:49,854 INFO L82 PathProgramCache]: Analyzing trace with hash 388224227, now seen corresponding path program 18 times [2020-12-22 19:02:49,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:49,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623680207] [2020-12-22 19:02:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 153 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:50,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623680207] [2020-12-22 19:02:50,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739621068] [2020-12-22 19:02:50,650 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 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 19:02:54,026 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-22 19:02:54,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:02:54,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 99 conjunts are in the unsatisfiable core [2020-12-22 19:02:54,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:02:54,062 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:02:54,062 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 19:02:54,064 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:02:54,090 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-22 19:02:54,092 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 19:02:54,093 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-22 19:02:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 190 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:55,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:02:55,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 56 [2020-12-22 19:02:55,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733165934] [2020-12-22 19:02:55,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-22 19:02:55,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:55,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-22 19:02:55,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2844, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 19:02:55,641 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 57 states. [2020-12-22 19:02:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:59,289 INFO L93 Difference]: Finished difference Result 130 states and 131 transitions. [2020-12-22 19:02:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 19:02:59,290 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 121 [2020-12-22 19:02:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:59,291 INFO L225 Difference]: With dead ends: 130 [2020-12-22 19:02:59,291 INFO L226 Difference]: Without dead ends: 130 [2020-12-22 19:02:59,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1324, Invalid=5482, Unknown=0, NotChecked=0, Total=6806 [2020-12-22 19:02:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-22 19:02:59,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-12-22 19:02:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-22 19:02:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2020-12-22 19:02:59,294 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 121 [2020-12-22 19:02:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:59,295 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2020-12-22 19:02:59,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-22 19:02:59,295 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2020-12-22 19:02:59,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 19:02:59,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:59,296 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:02:59,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:02:59,503 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:02:59,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:59,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1821215585, now seen corresponding path program 19 times [2020-12-22 19:02:59,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:59,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514278468] [2020-12-22 19:02:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 46 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:02,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514278468] [2020-12-22 19:03:02,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107243186] [2020-12-22 19:03:02,292 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 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 19:03:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:02,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 198 conjunts are in the unsatisfiable core [2020-12-22 19:03:02,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:02,459 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 19:03:02,461 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:02,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:02,465 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:02,465 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-22 19:03:03,598 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 19:03:03,599 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:03,607 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:03,608 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 19:03:03,608 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-22 19:03:04,119 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 22 treesize of output 21 [2020-12-22 19:03:04,120 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:04,132 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:04,133 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:04,134 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-22 19:03:04,297 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 21 treesize of output 20 [2020-12-22 19:03:04,298 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:04,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:04,305 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 19:03:04,305 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:04,419 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 21 treesize of output 20 [2020-12-22 19:03:04,421 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:04,430 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:04,431 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 19:03:04,431 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:04,539 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 21 treesize of output 20 [2020-12-22 19:03:04,540 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:04,547 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:04,549 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 19:03:04,549 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:04,664 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 21 treesize of output 20 [2020-12-22 19:03:04,665 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:04,672 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:04,674 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 19:03:04,674 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:04,791 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 21 treesize of output 20 [2020-12-22 19:03:04,792 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:04,799 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:04,800 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 19:03:04,800 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:04,917 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 21 treesize of output 20 [2020-12-22 19:03:04,918 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:04,925 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:04,926 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 19:03:04,927 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:05,044 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 21 treesize of output 20 [2020-12-22 19:03:05,047 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:05,053 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:05,054 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 19:03:05,054 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:05,184 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 21 treesize of output 20 [2020-12-22 19:03:05,188 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:05,194 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:05,196 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 19:03:05,196 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:05,315 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 21 treesize of output 20 [2020-12-22 19:03:05,316 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:05,324 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:05,325 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 19:03:05,325 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:05,441 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 19 treesize of output 18 [2020-12-22 19:03:05,443 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:05,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:05,450 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 19:03:05,450 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-22 19:03:05,459 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 19:03:05,460 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:05,461 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:05,462 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 19:03:05,462 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-22 19:03:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 46 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:05,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:05,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 43] total 82 [2020-12-22 19:03:05,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274103885] [2020-12-22 19:03:05,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-12-22 19:03:05,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:05,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-12-22 19:03:05,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=6416, Unknown=0, NotChecked=0, Total=6642 [2020-12-22 19:03:05,512 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 82 states. [2020-12-22 19:03:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:13,136 INFO L93 Difference]: Finished difference Result 208 states and 209 transitions. [2020-12-22 19:03:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-22 19:03:13,137 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 127 [2020-12-22 19:03:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:13,138 INFO L225 Difference]: With dead ends: 208 [2020-12-22 19:03:13,138 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 19:03:13,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2199 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=533, Invalid=11899, Unknown=0, NotChecked=0, Total=12432 [2020-12-22 19:03:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 19:03:13,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2020-12-22 19:03:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 19:03:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2020-12-22 19:03:13,142 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 127 [2020-12-22 19:03:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:13,142 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2020-12-22 19:03:13,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-12-22 19:03:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2020-12-22 19:03:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 19:03:13,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:13,143 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:13,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-22 19:03:13,353 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:03:13,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1005234012, now seen corresponding path program 20 times [2020-12-22 19:03:13,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:13,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101628300] [2020-12-22 19:03:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 190 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:14,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101628300] [2020-12-22 19:03:14,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715767236] [2020-12-22 19:03:14,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:14,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:03:14,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:14,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 128 conjunts are in the unsatisfiable core [2020-12-22 19:03:14,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:14,470 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:14,471 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 19:03:14,472 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:14,497 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-22 19:03:14,499 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 19:03:14,500 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-22 19:03:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 231 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:16,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:16,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 60 [2020-12-22 19:03:16,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495885117] [2020-12-22 19:03:16,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-12-22 19:03:16,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:16,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-12-22 19:03:16,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=3323, Unknown=0, NotChecked=0, Total=3660 [2020-12-22 19:03:16,308 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand 61 states. [2020-12-22 19:03:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:19,321 INFO L93 Difference]: Finished difference Result 140 states and 141 transitions. [2020-12-22 19:03:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 19:03:19,322 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 131 [2020-12-22 19:03:19,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:19,323 INFO L225 Difference]: With dead ends: 140 [2020-12-22 19:03:19,323 INFO L226 Difference]: Without dead ends: 140 [2020-12-22 19:03:19,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=909, Invalid=5097, Unknown=0, NotChecked=0, Total=6006 [2020-12-22 19:03:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-22 19:03:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-12-22 19:03:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-22 19:03:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2020-12-22 19:03:19,329 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 131 [2020-12-22 19:03:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:19,329 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2020-12-22 19:03:19,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-12-22 19:03:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2020-12-22 19:03:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 19:03:19,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:19,330 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:19,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:19,544 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:03:19,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:19,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1834780062, now seen corresponding path program 21 times [2020-12-22 19:03:19,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:19,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869286090] [2020-12-22 19:03:19,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 50 proven. 720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:22,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869286090] [2020-12-22 19:03:22,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565116285] [2020-12-22 19:03:22,806 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 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 19:03:26,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-12-22 19:03:26,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:26,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 213 conjunts are in the unsatisfiable core [2020-12-22 19:03:26,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:26,767 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 19:03:26,769 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:26,773 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:26,774 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:03:26,774 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-22 19:03:28,163 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 19:03:28,164 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:28,171 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:28,172 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 19:03:28,173 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-22 19:03:28,726 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 22 treesize of output 21 [2020-12-22 19:03:28,727 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:28,739 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:28,741 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:03:28,741 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-22 19:03:28,921 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 21 treesize of output 20 [2020-12-22 19:03:28,923 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:28,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:28,930 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 19:03:28,931 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:29,059 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 21 treesize of output 20 [2020-12-22 19:03:29,061 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:29,069 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:29,071 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 19:03:29,071 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:29,200 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 21 treesize of output 20 [2020-12-22 19:03:29,201 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:29,209 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:29,210 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 19:03:29,211 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:29,331 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 21 treesize of output 20 [2020-12-22 19:03:29,333 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:29,340 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:29,341 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 19:03:29,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:29,472 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 21 treesize of output 20 [2020-12-22 19:03:29,473 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:29,481 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:29,482 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 19:03:29,482 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:29,622 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 21 treesize of output 20 [2020-12-22 19:03:29,623 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:29,630 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:29,632 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 19:03:29,632 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:29,763 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 21 treesize of output 20 [2020-12-22 19:03:29,765 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:29,770 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:29,772 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 19:03:29,772 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:29,908 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 21 treesize of output 20 [2020-12-22 19:03:29,909 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:29,916 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:29,917 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 19:03:29,917 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:30,056 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 21 treesize of output 20 [2020-12-22 19:03:30,057 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:30,067 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:30,069 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 19:03:30,069 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:30,204 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 21 treesize of output 20 [2020-12-22 19:03:30,206 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:30,212 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:30,213 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 19:03:30,213 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-22 19:03:30,341 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 19 treesize of output 18 [2020-12-22 19:03:30,342 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:30,351 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:30,352 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 19:03:30,352 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-22 19:03:30,360 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 19:03:30,361 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:30,362 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:30,363 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 19:03:30,363 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-22 19:03:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 50 proven. 720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:30,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:30,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 46] total 88 [2020-12-22 19:03:30,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196932456] [2020-12-22 19:03:30,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-12-22 19:03:30,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:30,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-12-22 19:03:30,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=7413, Unknown=0, NotChecked=0, Total=7656 [2020-12-22 19:03:30,422 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 88 states. [2020-12-22 19:03:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:39,318 INFO L93 Difference]: Finished difference Result 224 states and 225 transitions. [2020-12-22 19:03:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-22 19:03:39,319 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 137 [2020-12-22 19:03:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:39,321 INFO L225 Difference]: With dead ends: 224 [2020-12-22 19:03:39,321 INFO L226 Difference]: Without dead ends: 145 [2020-12-22 19:03:39,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=570, Invalid=13710, Unknown=0, NotChecked=0, Total=14280 [2020-12-22 19:03:39,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-22 19:03:39,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2020-12-22 19:03:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 19:03:39,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-12-22 19:03:39,326 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 137 [2020-12-22 19:03:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:39,326 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-12-22 19:03:39,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-12-22 19:03:39,326 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-12-22 19:03:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 19:03:39,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:39,327 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:39,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-12-22 19:03:39,535 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:03:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:39,535 INFO L82 PathProgramCache]: Analyzing trace with hash -2006331419, now seen corresponding path program 22 times [2020-12-22 19:03:39,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:39,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099552640] [2020-12-22 19:03:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 231 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:40,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099552640] [2020-12-22 19:03:40,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618580292] [2020-12-22 19:03:40,652 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 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 19:03:42,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:03:42,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:42,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 142 conjunts are in the unsatisfiable core [2020-12-22 19:03:42,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:42,194 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:42,194 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 19:03:42,196 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:42,224 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-22 19:03:42,226 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 19:03:42,226 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-22 19:03:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 276 proven. 543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:43,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:03:43,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31] total 48 [2020-12-22 19:03:43,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213611423] [2020-12-22 19:03:43,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-12-22 19:03:43,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:03:43,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-12-22 19:03:43,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2162, Unknown=0, NotChecked=0, Total=2352 [2020-12-22 19:03:43,332 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 49 states. [2020-12-22 19:03:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:03:45,905 INFO L93 Difference]: Finished difference Result 150 states and 151 transitions. [2020-12-22 19:03:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 19:03:45,906 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 141 [2020-12-22 19:03:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:03:45,908 INFO L225 Difference]: With dead ends: 150 [2020-12-22 19:03:45,908 INFO L226 Difference]: Without dead ends: 150 [2020-12-22 19:03:45,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=579, Invalid=3843, Unknown=0, NotChecked=0, Total=4422 [2020-12-22 19:03:45,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-22 19:03:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2020-12-22 19:03:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-22 19:03:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2020-12-22 19:03:45,911 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 141 [2020-12-22 19:03:45,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:03:45,912 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2020-12-22 19:03:45,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-12-22 19:03:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2020-12-22 19:03:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 19:03:45,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:03:45,913 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:03:46,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:03:46,127 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:03:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:03:46,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1006091491, now seen corresponding path program 23 times [2020-12-22 19:03:46,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:03:46,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708618679] [2020-12-22 19:03:46,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:03:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:03:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 54 proven. 845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:03:50,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708618679] [2020-12-22 19:03:50,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322397000] [2020-12-22 19:03:50,084 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 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 19:03:59,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2020-12-22 19:03:59,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:03:59,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 227 conjunts are in the unsatisfiable core [2020-12-22 19:03:59,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:03:59,368 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_29|], 1=[|v_#valid_39|]} [2020-12-22 19:03:59,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:03:59,374 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 19:03:59,379 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:59,390 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:59,395 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 19:03:59,397 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:03:59,408 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:03:59,410 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 19:03:59,410 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-22 19:04:01,162 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 19:04:01,163 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:01,172 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:01,173 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:01,174 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-22 19:04:01,746 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:01,747 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:01,759 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:01,761 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:01,761 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:02,064 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:02,065 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:02,077 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:02,078 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:02,078 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:02,384 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:02,385 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:02,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:02,399 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:02,399 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:02,710 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:02,711 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:02,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:02,725 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:02,725 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:03,048 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:03,049 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:03,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:03,063 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:03,063 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:03,402 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:03,404 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:03,415 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:03,417 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:03,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:03,752 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:03,753 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:03,766 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:03,767 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:03,767 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:04,106 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:04,108 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:04,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:04,119 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:04,119 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:04,465 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:04,467 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:04,479 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:04,481 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:04,481 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:04,847 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:04,849 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:04,860 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:04,862 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:04,862 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:05,219 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:05,220 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:05,233 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:05,234 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:05,234 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:05,603 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:05,604 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:05,615 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:05,617 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:05,617 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-22 19:04:05,987 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:04:05,988 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:06,004 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:06,006 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 19:04:06,007 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:20 [2020-12-22 19:04:06,396 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:06,396 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 19 treesize of output 19 [2020-12-22 19:04:06,398 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:04:06,409 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:06,410 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:04:06,410 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:19 [2020-12-22 19:04:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 276 proven. 623 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:07,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:07,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 48] total 109 [2020-12-22 19:04:07,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306832645] [2020-12-22 19:04:07,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-12-22 19:04:07,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:07,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-12-22 19:04:07,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=11438, Unknown=0, NotChecked=0, Total=11772 [2020-12-22 19:04:07,067 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 109 states. [2020-12-22 19:04:13,988 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-22 19:04:14,497 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-22 19:04:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:31,216 INFO L93 Difference]: Finished difference Result 248 states and 249 transitions. [2020-12-22 19:04:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-12-22 19:04:31,217 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 147 [2020-12-22 19:04:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:31,219 INFO L225 Difference]: With dead ends: 248 [2020-12-22 19:04:31,219 INFO L226 Difference]: Without dead ends: 163 [2020-12-22 19:04:31,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5979 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=2079, Invalid=34977, Unknown=0, NotChecked=0, Total=37056 [2020-12-22 19:04:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-22 19:04:31,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 158. [2020-12-22 19:04:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-22 19:04:31,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2020-12-22 19:04:31,224 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 147 [2020-12-22 19:04:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:31,225 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2020-12-22 19:04:31,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-12-22 19:04:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2020-12-22 19:04:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 19:04:31,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:31,226 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:31,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-12-22 19:04:31,436 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:04:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:31,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1681679076, now seen corresponding path program 24 times [2020-12-22 19:04:31,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:31,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776456922] [2020-12-22 19:04:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 58 proven. 980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:36,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776456922] [2020-12-22 19:04:36,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589108236] [2020-12-22 19:04:36,129 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 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