/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:43:21,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:43:21,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:43:21,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:43:21,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:43:21,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:43:21,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:43:21,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:43:21,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:43:21,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:43:21,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:43:21,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:43:21,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:43:21,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:43:21,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:43:21,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:43:21,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:43:21,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:43:21,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:43:21,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:43:21,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:43:21,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:43:21,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:43:21,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:43:21,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:43:21,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:43:21,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:43:21,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:43:21,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:43:21,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:43:21,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:43:21,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:43:21,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:43:21,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:43:21,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:43:21,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:43:21,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:43:21,608 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:43:21,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:43:21,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:43:21,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:43:21,611 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:43:21,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:43:21,612 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:43:21,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:43:21,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:43:21,612 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:43:21,612 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:43:21,613 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:43:21,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:43:21,613 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:43:21,613 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:43:21,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:43:21,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:43:21,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:43:21,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:43:21,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:43:21,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:43:21,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:43:21,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:43:21,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:43:21,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:43:21,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:43:22,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:43:22,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:43:22,030 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:43:22,031 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:43:22,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2020-12-22 19:43:22,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0b5cba4/83f1c5c01370482dab502b0407f64b4d/FLAGa7cf87ace [2020-12-22 19:43:22,838 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:43:22,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2020-12-22 19:43:22,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0b5cba4/83f1c5c01370482dab502b0407f64b4d/FLAGa7cf87ace [2020-12-22 19:43:23,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0b5cba4/83f1c5c01370482dab502b0407f64b4d [2020-12-22 19:43:23,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:43:23,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:43:23,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:43:23,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:43:23,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:43:23,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376f0869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23, skipping insertion in model container [2020-12-22 19:43:23,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:43:23,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:43:23,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:43:23,457 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:43:23,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:43:23,500 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:43:23,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23 WrapperNode [2020-12-22 19:43:23,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:43:23,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:43:23,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:43:23,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:43:23,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:43:23,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:43:23,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:43:23,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:43:23,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (1/1) ... [2020-12-22 19:43:23,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:43:23,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:43:23,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:43:23,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:43:23,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:43:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:43:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:43:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:43:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:43:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:43:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:43:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:43:24,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:43:24,363 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-22 19:43:24,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:24 BoogieIcfgContainer [2020-12-22 19:43:24,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:43:24,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:43:24,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:43:24,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:43:24,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:43:23" (1/3) ... [2020-12-22 19:43:24,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659c8ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:43:24, skipping insertion in model container [2020-12-22 19:43:24,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:23" (2/3) ... [2020-12-22 19:43:24,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659c8ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:43:24, skipping insertion in model container [2020-12-22 19:43:24,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:24" (3/3) ... [2020-12-22 19:43:24,374 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers4-2.c [2020-12-22 19:43:24,381 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:43:24,387 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-12-22 19:43:24,406 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-12-22 19:43:24,430 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:43:24,430 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:43:24,430 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:43:24,431 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:43:24,431 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:43:24,431 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:43:24,431 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:43:24,431 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:43:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-22 19:43:24,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:43:24,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:24,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:43:24,456 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:24,463 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-12-22 19:43:24,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:24,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948536714] [2020-12-22 19:43:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:24,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948536714] [2020-12-22 19:43:24,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:24,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 19:43:24,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020287479] [2020-12-22 19:43:24,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:24,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:24,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:24,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:24,795 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 3 states. [2020-12-22 19:43:24,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:24,909 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-12-22 19:43:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:24,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:43:24,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:24,922 INFO L225 Difference]: With dead ends: 52 [2020-12-22 19:43:24,922 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 19:43:24,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 19:43:24,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-22 19:43:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:43:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-12-22 19:43:24,966 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 4 [2020-12-22 19:43:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:24,966 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-12-22 19:43:24,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-12-22 19:43:24,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:43:24,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:24,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:43:24,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:43:24,968 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:24,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:24,969 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2020-12-22 19:43:24,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:24,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59611926] [2020-12-22 19:43:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:25,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59611926] [2020-12-22 19:43:25,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:25,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:43:25,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803187481] [2020-12-22 19:43:25,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:43:25,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:25,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:43:25,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:43:25,063 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2020-12-22 19:43:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:25,171 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-12-22 19:43:25,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:43:25,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-22 19:43:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:25,173 INFO L225 Difference]: With dead ends: 53 [2020-12-22 19:43:25,173 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 19:43:25,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:43:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 19:43:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-12-22 19:43:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 19:43:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-12-22 19:43:25,182 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 4 [2020-12-22 19:43:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:25,183 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-12-22 19:43:25,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:43:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-12-22 19:43:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:43:25,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:25,184 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-12-22 19:43:25,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:43:25,184 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:25,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2020-12-22 19:43:25,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:25,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698435391] [2020-12-22 19:43:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:25,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698435391] [2020-12-22 19:43:25,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547479726] [2020-12-22 19:43:25,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:25,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:43:25,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:25,475 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 4=[|v_#valid_30|]} [2020-12-22 19:43:25,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:25,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:25,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:25,548 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-22 19:43:25,549 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2020-12-22 19:43:25,554 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:25,597 INFO L625 ElimStorePlain]: treesize reduction 10, result has 82.8 percent of original size [2020-12-22 19:43:25,613 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 161 treesize of output 157 [2020-12-22 19:43:25,627 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:25,691 INFO L625 ElimStorePlain]: treesize reduction 4, result has 90.7 percent of original size [2020-12-22 19:43:25,711 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:25,712 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:36, output treesize:27 [2020-12-22 19:43:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:25,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:25,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-12-22 19:43:25,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664436844] [2020-12-22 19:43:25,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:43:25,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:25,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:43:25,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:25,899 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 8 states. [2020-12-22 19:43:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:26,026 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-22 19:43:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:43:26,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-12-22 19:43:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:26,028 INFO L225 Difference]: With dead ends: 56 [2020-12-22 19:43:26,028 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 19:43:26,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 19:43:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-12-22 19:43:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 19:43:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-12-22 19:43:26,036 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 7 [2020-12-22 19:43:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:26,036 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-12-22 19:43:26,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:43:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-12-22 19:43:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:43:26,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:26,037 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-12-22 19:43:26,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 19:43:26,252 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:26,253 INFO L82 PathProgramCache]: Analyzing trace with hash 742961990, now seen corresponding path program 2 times [2020-12-22 19:43:26,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:26,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658452443] [2020-12-22 19:43:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:26,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658452443] [2020-12-22 19:43:26,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233480181] [2020-12-22 19:43:26,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:26,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:43:26,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:26,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:43:26,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:26,425 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_25|], 4=[|v_#valid_31|]} [2020-12-22 19:43:26,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:26,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:26,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:26,473 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-22 19:43:26,474 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2020-12-22 19:43:26,477 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:26,514 INFO L625 ElimStorePlain]: treesize reduction 10, result has 82.8 percent of original size [2020-12-22 19:43:26,525 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 83 treesize of output 81 [2020-12-22 19:43:26,530 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:26,571 INFO L625 ElimStorePlain]: treesize reduction 18, result has 68.4 percent of original size [2020-12-22 19:43:26,583 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:26,584 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:36, output treesize:27 [2020-12-22 19:43:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:26,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:26,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-12-22 19:43:26,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798244283] [2020-12-22 19:43:26,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:43:26,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:43:26,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:26,810 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-12-22 19:43:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:26,992 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-12-22 19:43:26,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:43:26,994 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-12-22 19:43:26,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:26,995 INFO L225 Difference]: With dead ends: 59 [2020-12-22 19:43:26,995 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 19:43:26,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:26,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 19:43:27,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-12-22 19:43:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 19:43:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-12-22 19:43:27,004 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 10 [2020-12-22 19:43:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:27,004 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-12-22 19:43:27,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:43:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-12-22 19:43:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:43:27,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:27,006 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2020-12-22 19:43:27,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:27,220 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:27,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:27,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1614122958, now seen corresponding path program 3 times [2020-12-22 19:43:27,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:27,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962901042] [2020-12-22 19:43:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:27,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962901042] [2020-12-22 19:43:27,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488645333] [2020-12-22 19:43:27,413 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:27,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:43:27,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:27,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:43:27,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:27,488 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_26|], 4=[|v_#valid_32|]} [2020-12-22 19:43:27,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:27,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:27,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:27,559 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-22 19:43:27,560 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2020-12-22 19:43:27,564 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:27,595 INFO L625 ElimStorePlain]: treesize reduction 10, result has 82.8 percent of original size [2020-12-22 19:43:27,607 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 39 treesize of output 37 [2020-12-22 19:43:27,610 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-22 19:43:27,648 INFO L625 ElimStorePlain]: treesize reduction 26, result has 60.0 percent of original size [2020-12-22 19:43:27,654 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:27,655 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:36, output treesize:27 [2020-12-22 19:43:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:43:27,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:27,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2020-12-22 19:43:27,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745653343] [2020-12-22 19:43:27,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:43:27,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:27,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:43:27,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:27,904 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 6 states. [2020-12-22 19:43:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:28,008 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-12-22 19:43:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:43:28,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 19:43:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:28,009 INFO L225 Difference]: With dead ends: 57 [2020-12-22 19:43:28,009 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 19:43:28,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:28,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 19:43:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-12-22 19:43:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 19:43:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-12-22 19:43:28,015 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 13 [2020-12-22 19:43:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:28,016 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-12-22 19:43:28,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:43:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-12-22 19:43:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:43:28,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:28,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:28,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:28,232 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:28,234 INFO L82 PathProgramCache]: Analyzing trace with hash -118451422, now seen corresponding path program 1 times [2020-12-22 19:43:28,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:28,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730713024] [2020-12-22 19:43:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:28,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730713024] [2020-12-22 19:43:28,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868800148] [2020-12-22 19:43:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:28,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:43:28,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:28,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:28,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 19:43:28,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857017402] [2020-12-22 19:43:28,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:43:28,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:43:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:28,386 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-12-22 19:43:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:28,416 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-12-22 19:43:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:43:28,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 19:43:28,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:28,418 INFO L225 Difference]: With dead ends: 61 [2020-12-22 19:43:28,418 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 19:43:28,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 19:43:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-12-22 19:43:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 19:43:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-12-22 19:43:28,424 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 16 [2020-12-22 19:43:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:28,424 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-12-22 19:43:28,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:43:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-12-22 19:43:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:43:28,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:28,425 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:28,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:28,639 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:28,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 2 times [2020-12-22 19:43:28,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:28,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115115661] [2020-12-22 19:43:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:28,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115115661] [2020-12-22 19:43:28,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037012474] [2020-12-22 19:43:28,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:28,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:43:28,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:28,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 19:43:28,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:28,882 INFO L348 Elim1Store]: treesize reduction 73, result has 33.0 percent of original size [2020-12-22 19:43:28,883 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 3 case distinctions, treesize of input 15 treesize of output 41 [2020-12-22 19:43:28,885 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:28,920 INFO L625 ElimStorePlain]: treesize reduction 10, result has 77.3 percent of original size [2020-12-22 19:43:28,930 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:28,930 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:19, output treesize:19 [2020-12-22 19:43:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 19:43:29,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:29,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2020-12-22 19:43:29,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311510164] [2020-12-22 19:43:29,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:43:29,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:29,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:43:29,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:29,044 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2020-12-22 19:43:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:29,170 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-12-22 19:43:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:43:29,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-22 19:43:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:29,174 INFO L225 Difference]: With dead ends: 67 [2020-12-22 19:43:29,174 INFO L226 Difference]: Without dead ends: 67 [2020-12-22 19:43:29,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:43:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-22 19:43:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-12-22 19:43:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 19:43:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-12-22 19:43:29,194 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 19 [2020-12-22 19:43:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:29,195 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-12-22 19:43:29,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:43:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-12-22 19:43:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:43:29,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:29,196 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:29,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 19:43:29,401 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2129139287, now seen corresponding path program 1 times [2020-12-22 19:43:29,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:29,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017526289] [2020-12-22 19:43:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:43:29,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017526289] [2020-12-22 19:43:29,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:29,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:43:29,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190602650] [2020-12-22 19:43:29,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:43:29,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:29,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:43:29,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:43:29,481 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 5 states. [2020-12-22 19:43:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:29,545 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-12-22 19:43:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:43:29,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-22 19:43:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:29,546 INFO L225 Difference]: With dead ends: 60 [2020-12-22 19:43:29,547 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 19:43:29,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:29,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 19:43:29,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-22 19:43:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 19:43:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-12-22 19:43:29,551 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 19 [2020-12-22 19:43:29,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:29,551 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-12-22 19:43:29,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:43:29,551 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-12-22 19:43:29,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:43:29,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:29,552 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:29,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:43:29,552 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:29,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:29,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1578808454, now seen corresponding path program 1 times [2020-12-22 19:43:29,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:29,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700060297] [2020-12-22 19:43:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:29,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700060297] [2020-12-22 19:43:29,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588108736] [2020-12-22 19:43:29,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:29,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:43:29,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:29,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:29,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 19:43:29,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045379895] [2020-12-22 19:43:29,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:43:29,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:29,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:43:29,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:29,718 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 8 states. [2020-12-22 19:43:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:29,751 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-12-22 19:43:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:43:29,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-22 19:43:29,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:29,753 INFO L225 Difference]: With dead ends: 65 [2020-12-22 19:43:29,753 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 19:43:29,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 19:43:29,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-12-22 19:43:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 19:43:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-22 19:43:29,758 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 20 [2020-12-22 19:43:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:29,758 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-22 19:43:29,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:43:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-22 19:43:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:43:29,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:29,759 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:29,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:29,973 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:29,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:29,974 INFO L82 PathProgramCache]: Analyzing trace with hash -2115101182, now seen corresponding path program 2 times [2020-12-22 19:43:29,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:29,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642979205] [2020-12-22 19:43:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:30,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642979205] [2020-12-22 19:43:30,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907420173] [2020-12-22 19:43:30,074 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 19:43:30,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:43:30,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:30,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 19:43:30,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:30,245 INFO L348 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2020-12-22 19:43:30,245 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 81 treesize of output 107 [2020-12-22 19:43:30,252 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:30,315 INFO L625 ElimStorePlain]: treesize reduction 28, result has 64.6 percent of original size [2020-12-22 19:43:30,320 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,324 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,326 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,328 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:30,343 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:30,343 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:51 [2020-12-22 19:43:30,349 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,350 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,352 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,354 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:30,392 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,394 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,396 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,398 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:30,465 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,467 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,469 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,471 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:30,534 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,536 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,538 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,540 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:30,605 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,607 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,609 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,611 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:30,674 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,676 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,677 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,679 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:30,738 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,740 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,756 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,758 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:30,822 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,824 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,826 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,827 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:30,892 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,894 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,896 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,898 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:30,958 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,959 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:30,961 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:30,962 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,022 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,023 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,025 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,026 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,084 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,086 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,087 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,089 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,143 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,145 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,146 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,148 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,203 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,205 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,207 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,208 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,272 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,274 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,276 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,278 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,352 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,353 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,355 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,357 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,416 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,418 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,419 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,421 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,477 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,479 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,481 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,483 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,538 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,539 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,541 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,542 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,596 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,598 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,600 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,601 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,652 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,654 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,655 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,656 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,707 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,709 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:31,711 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:31,712 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-22 19:43:31,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:31,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [8] total 9 [2020-12-22 19:43:31,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206326277] [2020-12-22 19:43:31,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:31,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:31,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:31,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:31,773 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 3 states. [2020-12-22 19:43:31,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:31,815 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-12-22 19:43:31,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:31,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:43:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:31,816 INFO L225 Difference]: With dead ends: 62 [2020-12-22 19:43:31,816 INFO L226 Difference]: Without dead ends: 62 [2020-12-22 19:43:31,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 21 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:31,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-22 19:43:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-22 19:43:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 19:43:31,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-12-22 19:43:31,820 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 23 [2020-12-22 19:43:31,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:31,820 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-12-22 19:43:31,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-12-22 19:43:31,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:43:31,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:31,821 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:32,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 19:43:32,035 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:32,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2115101181, now seen corresponding path program 1 times [2020-12-22 19:43:32,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:32,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923415418] [2020-12-22 19:43:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:32,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923415418] [2020-12-22 19:43:32,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237256239] [2020-12-22 19:43:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:32,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:43:32,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:32,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:32,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 19:43:32,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145153541] [2020-12-22 19:43:32,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:43:32,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:32,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:43:32,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:32,252 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 9 states. [2020-12-22 19:43:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:32,287 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-12-22 19:43:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:43:32,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-22 19:43:32,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:32,289 INFO L225 Difference]: With dead ends: 67 [2020-12-22 19:43:32,289 INFO L226 Difference]: Without dead ends: 67 [2020-12-22 19:43:32,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-22 19:43:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-12-22 19:43:32,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-22 19:43:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-12-22 19:43:32,292 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 23 [2020-12-22 19:43:32,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:32,293 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-12-22 19:43:32,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:43:32,293 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-12-22 19:43:32,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:43:32,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:32,294 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:32,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 19:43:32,509 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:32,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:32,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1533419909, now seen corresponding path program 2 times [2020-12-22 19:43:32,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:32,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146783890] [2020-12-22 19:43:32,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:32,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146783890] [2020-12-22 19:43:32,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710864308] [2020-12-22 19:43:32,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:32,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:43:32,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:32,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:43:32,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:32,671 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_28|], 4=[|v_#valid_34|]} [2020-12-22 19:43:32,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:32,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:32,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:32,715 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-22 19:43:32,716 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2020-12-22 19:43:32,718 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:32,751 INFO L625 ElimStorePlain]: treesize reduction 10, result has 82.8 percent of original size [2020-12-22 19:43:32,768 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 165 treesize of output 161 [2020-12-22 19:43:32,774 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:32,809 INFO L625 ElimStorePlain]: treesize reduction 4, result has 90.7 percent of original size [2020-12-22 19:43:32,819 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:32,820 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:36, output treesize:27 [2020-12-22 19:43:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-12-22 19:43:33,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:33,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 11 [2020-12-22 19:43:33,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344225793] [2020-12-22 19:43:33,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:43:33,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:33,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:43:33,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:33,044 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 4 states. [2020-12-22 19:43:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:33,120 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-12-22 19:43:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:43:33,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-12-22 19:43:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:33,122 INFO L225 Difference]: With dead ends: 68 [2020-12-22 19:43:33,122 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 19:43:33,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 19:43:33,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-12-22 19:43:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 19:43:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-22 19:43:33,125 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 26 [2020-12-22 19:43:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:33,126 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-22 19:43:33,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:43:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-22 19:43:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:43:33,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:33,127 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:33,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:33,341 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:33,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:33,342 INFO L82 PathProgramCache]: Analyzing trace with hash -281744994, now seen corresponding path program 1 times [2020-12-22 19:43:33,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:33,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312852785] [2020-12-22 19:43:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:43:33,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312852785] [2020-12-22 19:43:33,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502392757] [2020-12-22 19:43:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:43:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:33,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:43:33,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:43:33,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:33,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-22 19:43:33,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547582161] [2020-12-22 19:43:33,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:43:33,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:33,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:43:33,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:33,517 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 10 states. [2020-12-22 19:43:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:33,560 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-12-22 19:43:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:43:33,561 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-12-22 19:43:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:33,561 INFO L225 Difference]: With dead ends: 71 [2020-12-22 19:43:33,561 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 19:43:33,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:33,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 19:43:33,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-12-22 19:43:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-22 19:43:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-12-22 19:43:33,566 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 30 [2020-12-22 19:43:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:33,566 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-12-22 19:43:33,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:43:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-12-22 19:43:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 19:43:33,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:33,567 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:33,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:33,782 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:33,783 INFO L82 PathProgramCache]: Analyzing trace with hash 425603622, now seen corresponding path program 2 times [2020-12-22 19:43:33,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:33,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045917798] [2020-12-22 19:43:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:43:33,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045917798] [2020-12-22 19:43:33,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776585650] [2020-12-22 19:43:33,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:33,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:43:33,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:33,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:43:33,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:43:33,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:33,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-22 19:43:33,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468133877] [2020-12-22 19:43:33,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:43:33,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:33,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:43:33,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:33,996 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-12-22 19:43:34,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:34,048 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-12-22 19:43:34,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:43:34,048 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-12-22 19:43:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:34,049 INFO L225 Difference]: With dead ends: 74 [2020-12-22 19:43:34,050 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 19:43:34,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:34,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 19:43:34,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-12-22 19:43:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 19:43:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-12-22 19:43:34,053 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 33 [2020-12-22 19:43:34,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:34,054 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-12-22 19:43:34,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:43:34,054 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-12-22 19:43:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 19:43:34,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:34,055 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:34,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 19:43:34,269 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:34,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1938668702, now seen corresponding path program 3 times [2020-12-22 19:43:34,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:34,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935009898] [2020-12-22 19:43:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:43:34,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935009898] [2020-12-22 19:43:34,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875895290] [2020-12-22 19:43:34,380 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 19:43:34,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:43:34,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:34,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 19:43:34,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:34,529 INFO L348 Elim1Store]: treesize reduction 73, result has 33.0 percent of original size [2020-12-22 19:43:34,530 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 3 case distinctions, treesize of input 15 treesize of output 41 [2020-12-22 19:43:34,532 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:34,576 INFO L625 ElimStorePlain]: treesize reduction 10, result has 77.3 percent of original size [2020-12-22 19:43:34,583 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:34,583 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:19, output treesize:19 [2020-12-22 19:43:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-12-22 19:43:34,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:34,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 16 [2020-12-22 19:43:34,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057308545] [2020-12-22 19:43:34,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:43:34,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:34,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:43:34,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:43:34,719 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 7 states. [2020-12-22 19:43:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:34,869 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-12-22 19:43:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:43:34,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-22 19:43:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:34,870 INFO L225 Difference]: With dead ends: 73 [2020-12-22 19:43:34,871 INFO L226 Difference]: Without dead ends: 73 [2020-12-22 19:43:34,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:43:34,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-22 19:43:34,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-12-22 19:43:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-22 19:43:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-12-22 19:43:34,873 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 36 [2020-12-22 19:43:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:34,874 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-12-22 19:43:34,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:43:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-12-22 19:43:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 19:43:34,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:34,875 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:35,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 19:43:35,090 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:35,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:35,091 INFO L82 PathProgramCache]: Analyzing trace with hash -30812409, now seen corresponding path program 1 times [2020-12-22 19:43:35,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:35,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391854325] [2020-12-22 19:43:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:43:35,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391854325] [2020-12-22 19:43:35,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595616444] [2020-12-22 19:43:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:35,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:43:35,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:43:35,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:35,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-22 19:43:35,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42600985] [2020-12-22 19:43:35,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:43:35,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:35,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:43:35,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:43:35,308 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-12-22 19:43:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:35,360 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-12-22 19:43:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:43:35,361 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-12-22 19:43:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:35,362 INFO L225 Difference]: With dead ends: 76 [2020-12-22 19:43:35,362 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 19:43:35,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:43:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 19:43:35,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-12-22 19:43:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 19:43:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-12-22 19:43:35,365 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 37 [2020-12-22 19:43:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:35,365 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-12-22 19:43:35,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:43:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-12-22 19:43:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:43:35,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:35,366 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:35,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 19:43:35,580 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:35,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:35,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1210017151, now seen corresponding path program 2 times [2020-12-22 19:43:35,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:35,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199047754] [2020-12-22 19:43:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:43:35,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199047754] [2020-12-22 19:43:35,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339295437] [2020-12-22 19:43:35,719 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 19:43:35,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:43:35,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:35,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:43:35,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:35,779 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_30|], 4=[|v_#valid_35|]} [2020-12-22 19:43:35,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:35,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:35,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:35,828 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-22 19:43:35,828 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2020-12-22 19:43:35,831 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:35,877 INFO L625 ElimStorePlain]: treesize reduction 10, result has 83.6 percent of original size [2020-12-22 19:43:35,887 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 39 treesize of output 37 [2020-12-22 19:43:35,890 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-22 19:43:35,963 INFO L625 ElimStorePlain]: treesize reduction 26, result has 61.8 percent of original size [2020-12-22 19:43:35,969 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:35,970 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:39, output treesize:30 [2020-12-22 19:43:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-12-22 19:43:36,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:36,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 17 [2020-12-22 19:43:36,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973185474] [2020-12-22 19:43:36,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:43:36,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:36,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:43:36,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:43:36,385 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 17 states. [2020-12-22 19:43:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:37,191 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-12-22 19:43:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:43:37,192 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-12-22 19:43:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:37,192 INFO L225 Difference]: With dead ends: 76 [2020-12-22 19:43:37,193 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 19:43:37,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-12-22 19:43:37,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 19:43:37,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-12-22 19:43:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 19:43:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-12-22 19:43:37,196 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 40 [2020-12-22 19:43:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:37,196 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-12-22 19:43:37,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:43:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-12-22 19:43:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 19:43:37,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:37,197 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:37,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:37,402 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:37,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:37,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2116146172, now seen corresponding path program 1 times [2020-12-22 19:43:37,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:37,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283964312] [2020-12-22 19:43:37,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-12-22 19:43:37,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283964312] [2020-12-22 19:43:37,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427498431] [2020-12-22 19:43:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:37,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 19:43:37,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-12-22 19:43:37,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:37,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 19:43:37,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967852463] [2020-12-22 19:43:37,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:43:37,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:37,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:43:37,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:43:37,577 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 5 states. [2020-12-22 19:43:37,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:37,601 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2020-12-22 19:43:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:43:37,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-22 19:43:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:37,602 INFO L225 Difference]: With dead ends: 83 [2020-12-22 19:43:37,602 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 19:43:37,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:43:37,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 19:43:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2020-12-22 19:43:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-22 19:43:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-12-22 19:43:37,605 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 45 [2020-12-22 19:43:37,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:37,606 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-12-22 19:43:37,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:43:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-12-22 19:43:37,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 19:43:37,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:37,607 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:37,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 19:43:37,820 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:37,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:37,821 INFO L82 PathProgramCache]: Analyzing trace with hash 729839352, now seen corresponding path program 2 times [2020-12-22 19:43:37,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:37,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428312884] [2020-12-22 19:43:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-12-22 19:43:37,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428312884] [2020-12-22 19:43:37,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202950356] [2020-12-22 19:43:37,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:37,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:43:37,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:37,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:43:37,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:38,083 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2020-12-22 19:43:38,085 INFO L348 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2020-12-22 19:43:38,085 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 75 treesize of output 103 [2020-12-22 19:43:38,091 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:38,160 INFO L625 ElimStorePlain]: treesize reduction 28, result has 64.6 percent of original size [2020-12-22 19:43:38,163 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,164 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,165 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,166 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,175 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:38,175 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:51 [2020-12-22 19:43:38,177 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,179 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,180 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,181 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,207 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,208 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,210 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,211 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,253 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,254 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,255 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,256 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,297 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,298 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,300 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,301 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,342 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,343 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,344 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,346 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,388 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,389 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,391 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,392 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,434 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,435 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,436 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,437 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,476 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,477 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,478 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,479 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,516 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,517 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,519 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,520 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,558 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,560 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,561 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,562 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,603 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,604 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,605 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,606 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,671 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,672 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,673 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,674 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,714 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,715 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,716 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,717 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,757 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,758 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,760 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,761 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,804 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,805 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,806 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,808 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,845 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,846 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,847 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,849 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,893 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,894 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,895 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,896 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,938 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,939 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,940 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,942 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:38,983 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,984 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:38,985 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:38,987 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,027 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,028 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,029 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,030 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,075 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,076 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,077 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,078 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,119 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,120 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,121 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,122 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,162 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,164 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,165 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,166 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,239 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,240 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,242 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,244 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,292 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,293 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,295 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,296 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,345 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,347 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,348 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,350 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,399 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,401 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,402 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,404 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,446 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,448 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,449 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,450 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,496 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,497 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,498 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,500 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,541 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,542 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,543 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,545 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,585 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,586 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,587 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,589 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,630 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,631 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,633 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,634 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,676 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,678 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,679 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,680 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,719 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,720 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,721 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,722 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,764 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,765 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,767 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,768 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,806 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,808 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,809 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,810 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,847 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,849 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,850 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,851 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,896 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,898 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,899 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,900 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,939 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,940 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,941 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,942 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:39,981 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,983 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:39,984 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:39,985 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:40,026 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,027 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,029 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:40,030 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:40,068 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,069 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,070 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:40,071 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:40,110 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,111 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,112 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:40,113 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:40,153 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,154 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,155 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:40,156 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:40,195 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,196 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,197 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:40,198 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:40,237 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,238 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,240 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:40,241 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:40,279 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,280 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:43:40,281 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 5 disjuncts [2020-12-22 19:43:40,283 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 7 disjuncts [2020-12-22 19:43:40,380 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:43:40,548 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 19:43:40,548 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:40,549 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 32 treesize of output 172 [2020-12-22 19:43:40,555 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:40,621 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:40,621 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 88 [2020-12-22 19:43:40,625 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:40,792 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-12-22 19:43:40,793 INFO L625 ElimStorePlain]: treesize reduction 108, result has 45.2 percent of original size [2020-12-22 19:43:40,795 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:43:40,798 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-12-22 19:43:40,799 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:71, output treesize:89 [2020-12-22 19:43:40,801 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:43:40,897 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:43:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-12-22 19:43:40,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:40,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2020-12-22 19:43:40,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565181631] [2020-12-22 19:43:40,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:43:40,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:40,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:43:40,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:40,963 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 5 states. [2020-12-22 19:43:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:41,210 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-12-22 19:43:41,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:43:41,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-12-22 19:43:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:41,211 INFO L225 Difference]: With dead ends: 78 [2020-12-22 19:43:41,211 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 19:43:41,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 46 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:41,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 19:43:41,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-22 19:43:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 19:43:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-12-22 19:43:41,213 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 50 [2020-12-22 19:43:41,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:41,214 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-12-22 19:43:41,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:43:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-12-22 19:43:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 19:43:41,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:41,215 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:41,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:41,428 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:41,428 INFO L82 PathProgramCache]: Analyzing trace with hash 729839353, now seen corresponding path program 1 times [2020-12-22 19:43:41,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:41,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498454675] [2020-12-22 19:43:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-12-22 19:43:41,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498454675] [2020-12-22 19:43:41,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258836650] [2020-12-22 19:43:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:43:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:41,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:43:41,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-12-22 19:43:41,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:41,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 19:43:41,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506967120] [2020-12-22 19:43:41,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:43:41,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:41,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:43:41,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:43:41,621 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 6 states. [2020-12-22 19:43:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:41,654 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2020-12-22 19:43:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:43:41,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-12-22 19:43:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:41,656 INFO L225 Difference]: With dead ends: 87 [2020-12-22 19:43:41,656 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 19:43:41,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:43:41,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 19:43:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-12-22 19:43:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:43:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-12-22 19:43:41,660 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 50 [2020-12-22 19:43:41,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:41,660 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-12-22 19:43:41,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:43:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-12-22 19:43:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 19:43:41,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:41,661 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:41,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:41,875 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:41,875 INFO L82 PathProgramCache]: Analyzing trace with hash 505078917, now seen corresponding path program 2 times [2020-12-22 19:43:41,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:41,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972080542] [2020-12-22 19:43:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-12-22 19:43:41,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972080542] [2020-12-22 19:43:41,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987020180] [2020-12-22 19:43:41,931 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 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 19:43:42,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:43:42,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:42,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 19:43:42,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:42,015 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_31|], 4=[|v_#valid_38|]} [2020-12-22 19:43:42,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:42,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:42,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:43:42,057 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-22 19:43:42,058 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2020-12-22 19:43:42,061 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:42,097 INFO L625 ElimStorePlain]: treesize reduction 10, result has 82.8 percent of original size [2020-12-22 19:43:42,106 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 57 treesize of output 55 [2020-12-22 19:43:42,108 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:42,154 INFO L625 ElimStorePlain]: treesize reduction 22, result has 63.9 percent of original size [2020-12-22 19:43:42,158 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:42,159 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:36, output treesize:27 [2020-12-22 19:43:42,516 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:42,516 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 80 [2020-12-22 19:43:42,518 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:42,577 INFO L625 ElimStorePlain]: treesize reduction 42, result has 45.5 percent of original size [2020-12-22 19:43:42,579 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:42,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:35 [2020-12-22 19:43:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-12-22 19:43:42,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:42,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2020-12-22 19:43:42,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413774488] [2020-12-22 19:43:42,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:43:42,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:42,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:43:42,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:42,663 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 5 states. [2020-12-22 19:43:42,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:42,836 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2020-12-22 19:43:42,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:43:42,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 19:43:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:42,838 INFO L225 Difference]: With dead ends: 90 [2020-12-22 19:43:42,838 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:43:42,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:42,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:43:42,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-12-22 19:43:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-22 19:43:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-12-22 19:43:42,841 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 55 [2020-12-22 19:43:42,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:42,841 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-12-22 19:43:42,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:43:42,842 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-12-22 19:43:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 19:43:42,842 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:42,842 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:43,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 19:43:43,051 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:43,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:43,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1522422762, now seen corresponding path program 1 times [2020-12-22 19:43:43,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:43,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325994332] [2020-12-22 19:43:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-12-22 19:43:43,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325994332] [2020-12-22 19:43:43,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:43,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:43:43,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442898842] [2020-12-22 19:43:43,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:43,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:43,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:43,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:43,102 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 3 states. [2020-12-22 19:43:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:43,126 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-12-22 19:43:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:43,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 19:43:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:43,128 INFO L225 Difference]: With dead ends: 84 [2020-12-22 19:43:43,128 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 19:43:43,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:43,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 19:43:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-12-22 19:43:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:43:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-12-22 19:43:43,131 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 56 [2020-12-22 19:43:43,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:43,131 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-12-22 19:43:43,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-12-22 19:43:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 19:43:43,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:43,132 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:43,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 19:43:43,132 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:43,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1522422761, now seen corresponding path program 1 times [2020-12-22 19:43:43,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:43,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148894921] [2020-12-22 19:43:43,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-12-22 19:43:43,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148894921] [2020-12-22 19:43:43,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621415459] [2020-12-22 19:43:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order 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 19:43:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:43,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:43:43,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-12-22 19:43:43,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:43,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 19:43:43,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592877352] [2020-12-22 19:43:43,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:43:43,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:43,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:43:43,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:43,337 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 7 states. [2020-12-22 19:43:43,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:43,373 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-12-22 19:43:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:43:43,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-12-22 19:43:43,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:43,374 INFO L225 Difference]: With dead ends: 93 [2020-12-22 19:43:43,374 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 19:43:43,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:43,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 19:43:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2020-12-22 19:43:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:43:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-12-22 19:43:43,377 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 56 [2020-12-22 19:43:43,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:43,377 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-12-22 19:43:43,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:43:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-12-22 19:43:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 19:43:43,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:43,378 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:43,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 19:43:43,593 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:43,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:43,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1317093213, now seen corresponding path program 2 times [2020-12-22 19:43:43,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:43,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566001388] [2020-12-22 19:43:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-12-22 19:43:43,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566001388] [2020-12-22 19:43:43,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182216579] [2020-12-22 19:43:43,654 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 19:43:43,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:43:43,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:43,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:43:43,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:43,774 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:43:43,775 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:43,783 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:43,784 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:43:43,784 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 19:43:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2020-12-22 19:43:43,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:43,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2020-12-22 19:43:43,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840443675] [2020-12-22 19:43:43,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:43,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:43,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:43,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:43,805 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 3 states. [2020-12-22 19:43:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:43,850 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2020-12-22 19:43:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:43,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 19:43:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:43,852 INFO L225 Difference]: With dead ends: 92 [2020-12-22 19:43:43,852 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 19:43:43,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:43,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 19:43:43,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-12-22 19:43:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 19:43:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-12-22 19:43:43,856 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 61 [2020-12-22 19:43:43,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:43,856 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-12-22 19:43:43,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:43,857 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-12-22 19:43:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 19:43:43,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:43,857 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:44,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 19:43:44,071 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:44,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:44,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1561806214, now seen corresponding path program 1 times [2020-12-22 19:43:44,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:44,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850763319] [2020-12-22 19:43:44,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-12-22 19:43:44,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850763319] [2020-12-22 19:43:44,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187024604] [2020-12-22 19:43:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:43:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:44,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:43:44,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-12-22 19:43:44,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:44,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 19:43:44,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120271348] [2020-12-22 19:43:44,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:43:44,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:44,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:43:44,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:44,280 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 8 states. [2020-12-22 19:43:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:44,324 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2020-12-22 19:43:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:43:44,325 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-12-22 19:43:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:44,326 INFO L225 Difference]: With dead ends: 99 [2020-12-22 19:43:44,326 INFO L226 Difference]: Without dead ends: 99 [2020-12-22 19:43:44,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-22 19:43:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2020-12-22 19:43:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 19:43:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-12-22 19:43:44,329 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 65 [2020-12-22 19:43:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:44,329 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-12-22 19:43:44,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:43:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-12-22 19:43:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 19:43:44,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:44,330 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:44,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:43:44,545 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:44,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:44,545 INFO L82 PathProgramCache]: Analyzing trace with hash 444239482, now seen corresponding path program 2 times [2020-12-22 19:43:44,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:44,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20486013] [2020-12-22 19:43:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-12-22 19:43:44,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20486013] [2020-12-22 19:43:44,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496890418] [2020-12-22 19:43:44,618 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 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 19:43:44,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:43:44,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:44,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:43:44,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-12-22 19:43:44,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:44,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 19:43:44,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495075760] [2020-12-22 19:43:44,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:43:44,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:44,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:43:44,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:44,792 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 9 states. [2020-12-22 19:43:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:44,840 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2020-12-22 19:43:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:43:44,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-12-22 19:43:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:44,841 INFO L225 Difference]: With dead ends: 104 [2020-12-22 19:43:44,841 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 19:43:44,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 19:43:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2020-12-22 19:43:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:43:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-12-22 19:43:44,844 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 70 [2020-12-22 19:43:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:44,844 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-12-22 19:43:44,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:43:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-12-22 19:43:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 19:43:44,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:44,845 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:45,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:45,059 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:45,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:45,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1069367802, now seen corresponding path program 3 times [2020-12-22 19:43:45,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:45,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165045630] [2020-12-22 19:43:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-12-22 19:43:45,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165045630] [2020-12-22 19:43:45,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206759926] [2020-12-22 19:43:45,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:45,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:43:45,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:45,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 19:43:45,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:45,283 INFO L348 Elim1Store]: treesize reduction 73, result has 33.0 percent of original size [2020-12-22 19:43:45,283 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 3 case distinctions, treesize of input 15 treesize of output 41 [2020-12-22 19:43:45,285 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:45,321 INFO L625 ElimStorePlain]: treesize reduction 10, result has 77.3 percent of original size [2020-12-22 19:43:45,328 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:45,329 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:19, output treesize:19 [2020-12-22 19:43:45,458 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:45,459 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:43:45,460 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:45,480 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-12-22 19:43:45,481 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:43:45,481 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:17 [2020-12-22 19:43:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-12-22 19:43:45,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:43:45,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 14 [2020-12-22 19:43:45,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967548746] [2020-12-22 19:43:45,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:43:45,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:45,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:43:45,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:43:45,572 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 7 states. [2020-12-22 19:43:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:45,703 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2020-12-22 19:43:45,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:43:45,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-12-22 19:43:45,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:45,704 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:43:45,704 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:43:45,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:43:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:43:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-12-22 19:43:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 19:43:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-12-22 19:43:45,707 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 75 [2020-12-22 19:43:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:45,708 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-12-22 19:43:45,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:43:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-12-22 19:43:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 19:43:45,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:45,709 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:45,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 19:43:45,922 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1209336502, now seen corresponding path program 1 times [2020-12-22 19:43:45,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:45,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172959850] [2020-12-22 19:43:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-12-22 19:43:46,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172959850] [2020-12-22 19:43:46,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807994581] [2020-12-22 19:43:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:43:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:46,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:43:46,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-12-22 19:43:46,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:46,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-22 19:43:46,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652169899] [2020-12-22 19:43:46,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:43:46,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:46,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:43:46,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:46,207 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 10 states. [2020-12-22 19:43:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:46,290 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2020-12-22 19:43:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:43:46,291 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-12-22 19:43:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:46,292 INFO L225 Difference]: With dead ends: 108 [2020-12-22 19:43:46,292 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 19:43:46,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 19:43:46,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2020-12-22 19:43:46,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-22 19:43:46,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-12-22 19:43:46,296 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 76 [2020-12-22 19:43:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:46,296 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-12-22 19:43:46,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:43:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-12-22 19:43:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 19:43:46,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:46,297 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:46,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:46,511 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:46,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:46,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1431938750, now seen corresponding path program 2 times [2020-12-22 19:43:46,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:46,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172506662] [2020-12-22 19:43:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-12-22 19:43:46,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172506662] [2020-12-22 19:43:46,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025597145] [2020-12-22 19:43:46,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:46,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:43:46,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:46,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:43:46,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:46,769 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:43:46,769 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:46,775 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:46,776 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:43:46,776 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 19:43:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-12-22 19:43:46,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:46,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 15 [2020-12-22 19:43:46,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905356560] [2020-12-22 19:43:46,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 19:43:46,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:46,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 19:43:46,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:43:46,868 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 15 states. [2020-12-22 19:43:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:47,275 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-12-22 19:43:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:43:47,276 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 81 [2020-12-22 19:43:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:47,277 INFO L225 Difference]: With dead ends: 112 [2020-12-22 19:43:47,277 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 19:43:47,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:43:47,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 19:43:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2020-12-22 19:43:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-22 19:43:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-12-22 19:43:47,283 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 81 [2020-12-22 19:43:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:47,283 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-12-22 19:43:47,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 19:43:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-12-22 19:43:47,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 19:43:47,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:47,284 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:47,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 19:43:47,497 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:47,498 INFO L82 PathProgramCache]: Analyzing trace with hash -689638061, now seen corresponding path program 1 times [2020-12-22 19:43:47,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:47,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513594131] [2020-12-22 19:43:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-12-22 19:43:47,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513594131] [2020-12-22 19:43:47,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201771126] [2020-12-22 19:43:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:43:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:47,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:43:47,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-12-22 19:43:47,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:47,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11] total 13 [2020-12-22 19:43:47,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77968937] [2020-12-22 19:43:47,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:43:47,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:47,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:43:47,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:43:47,835 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 13 states. [2020-12-22 19:43:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:47,939 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2020-12-22 19:43:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:43:47,940 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-12-22 19:43:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:47,941 INFO L225 Difference]: With dead ends: 124 [2020-12-22 19:43:47,941 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 19:43:47,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:43:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 19:43:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2020-12-22 19:43:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 19:43:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-12-22 19:43:47,945 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 88 [2020-12-22 19:43:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:47,945 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-12-22 19:43:47,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:43:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-12-22 19:43:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 19:43:47,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:47,947 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:48,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:48,160 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:48,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:48,160 INFO L82 PathProgramCache]: Analyzing trace with hash 62530644, now seen corresponding path program 2 times [2020-12-22 19:43:48,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:48,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253736395] [2020-12-22 19:43:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-12-22 19:43:48,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253736395] [2020-12-22 19:43:48,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624671849] [2020-12-22 19:43:48,313 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 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 19:43:48,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:43:48,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:48,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:43:48,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-12-22 19:43:48,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:48,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-22 19:43:48,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852877842] [2020-12-22 19:43:48,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:43:48,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:48,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:43:48,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:43:48,520 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand 13 states. [2020-12-22 19:43:48,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:48,602 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2020-12-22 19:43:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:43:48,602 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 98 [2020-12-22 19:43:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:48,603 INFO L225 Difference]: With dead ends: 121 [2020-12-22 19:43:48,604 INFO L226 Difference]: Without dead ends: 121 [2020-12-22 19:43:48,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:43:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-22 19:43:48,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-12-22 19:43:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-22 19:43:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2020-12-22 19:43:48,607 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 98 [2020-12-22 19:43:48,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:48,608 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2020-12-22 19:43:48,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:43:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2020-12-22 19:43:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 19:43:48,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:48,609 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:48,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 19:43:48,822 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:48,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:48,823 INFO L82 PathProgramCache]: Analyzing trace with hash -265893408, now seen corresponding path program 3 times [2020-12-22 19:43:48,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:48,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389390847] [2020-12-22 19:43:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:43:48,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389390847] [2020-12-22 19:43:48,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41450305] [2020-12-22 19:43:48,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:48,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 19:43:48,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:48,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:43:48,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:43:49,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:49,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 19:43:49,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492669382] [2020-12-22 19:43:49,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:43:49,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:49,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:43:49,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:43:49,093 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand 6 states. [2020-12-22 19:43:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:49,125 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2020-12-22 19:43:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:43:49,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-12-22 19:43:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:49,127 INFO L225 Difference]: With dead ends: 130 [2020-12-22 19:43:49,127 INFO L226 Difference]: Without dead ends: 130 [2020-12-22 19:43:49,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:43:49,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-22 19:43:49,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-12-22 19:43:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-22 19:43:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2020-12-22 19:43:49,131 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 103 [2020-12-22 19:43:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:49,132 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2020-12-22 19:43:49,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:43:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2020-12-22 19:43:49,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 19:43:49,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:49,133 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:49,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:49,348 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:49,349 INFO L82 PathProgramCache]: Analyzing trace with hash -875885325, now seen corresponding path program 4 times [2020-12-22 19:43:49,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:49,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113746663] [2020-12-22 19:43:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:43:49,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113746663] [2020-12-22 19:43:49,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058321366] [2020-12-22 19:43:49,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:50,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:43:50,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:50,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:43:50,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:43:50,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:50,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 19:43:50,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135099632] [2020-12-22 19:43:50,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:43:50,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:50,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:43:50,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:50,525 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand 7 states. [2020-12-22 19:43:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:50,566 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2020-12-22 19:43:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:43:50,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-12-22 19:43:50,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:50,568 INFO L225 Difference]: With dead ends: 135 [2020-12-22 19:43:50,568 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 19:43:50,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:50,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 19:43:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2020-12-22 19:43:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-22 19:43:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2020-12-22 19:43:50,574 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 108 [2020-12-22 19:43:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:50,574 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2020-12-22 19:43:50,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:43:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2020-12-22 19:43:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 19:43:50,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:50,575 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:50,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 19:43:50,790 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:43:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:50,790 INFO L82 PathProgramCache]: Analyzing trace with hash 197443008, now seen corresponding path program 5 times [2020-12-22 19:43:50,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:50,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297154260] [2020-12-22 19:43:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:43:50,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297154260] [2020-12-22 19:43:50,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176672138] [2020-12-22 19:43:50,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:44:00,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-22 19:44:00,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:44:00,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:44:00,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:44:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:44:00,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:44:00,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 19:44:00,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064403343] [2020-12-22 19:44:00,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:44:00,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:44:00,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:44:00,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:44:00,583 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand 8 states. [2020-12-22 19:44:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:44:00,640 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2020-12-22 19:44:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:44:00,641 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-12-22 19:44:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:44:00,642 INFO L225 Difference]: With dead ends: 140 [2020-12-22 19:44:00,642 INFO L226 Difference]: Without dead ends: 140 [2020-12-22 19:44:00,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:44:00,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-22 19:44:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2020-12-22 19:44:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-22 19:44:00,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2020-12-22 19:44:00,646 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 113 [2020-12-22 19:44:00,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:44:00,647 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2020-12-22 19:44:00,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:44:00,647 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2020-12-22 19:44:00,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 19:44:00,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:44:00,648 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:44:00,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:44:00,863 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:44:00,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:44:00,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1842707181, now seen corresponding path program 6 times [2020-12-22 19:44:00,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:44:00,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80829645] [2020-12-22 19:44:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:44:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:44:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:44:00,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80829645] [2020-12-22 19:44:00,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209009143] [2020-12-22 19:44:00,966 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:44:02,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-22 19:44:02,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:44:02,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 19:44:02,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:44:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 46 proven. 130 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-12-22 19:44:02,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:44:02,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 14 [2020-12-22 19:44:02,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855091411] [2020-12-22 19:44:02,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 19:44:02,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:44:02,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 19:44:02,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:44:02,887 INFO L87 Difference]: Start difference. First operand 136 states and 140 transitions. Second operand 14 states. [2020-12-22 19:44:03,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:44:03,164 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2020-12-22 19:44:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:44:03,165 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 118 [2020-12-22 19:44:03,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:44:03,166 INFO L225 Difference]: With dead ends: 145 [2020-12-22 19:44:03,166 INFO L226 Difference]: Without dead ends: 145 [2020-12-22 19:44:03,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:44:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-22 19:44:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2020-12-22 19:44:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-22 19:44:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2020-12-22 19:44:03,170 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 118 [2020-12-22 19:44:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:44:03,171 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2020-12-22 19:44:03,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 19:44:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2020-12-22 19:44:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 19:44:03,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:44:03,172 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:44:03,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 19:44:03,388 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:44:03,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:44:03,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1693145504, now seen corresponding path program 7 times [2020-12-22 19:44:03,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:44:03,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815311295] [2020-12-22 19:44:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:44:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:44:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:44:03,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815311295] [2020-12-22 19:44:03,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795907488] [2020-12-22 19:44:03,489 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:44:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:44:03,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:44:03,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:44:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:44:03,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:44:03,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-22 19:44:03,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310813857] [2020-12-22 19:44:03,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:44:03,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:44:03,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:44:03,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:44:03,744 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 10 states. [2020-12-22 19:44:03,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:44:03,802 INFO L93 Difference]: Finished difference Result 150 states and 154 transitions. [2020-12-22 19:44:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:44:03,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2020-12-22 19:44:03,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:44:03,804 INFO L225 Difference]: With dead ends: 150 [2020-12-22 19:44:03,804 INFO L226 Difference]: Without dead ends: 150 [2020-12-22 19:44:03,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:44:03,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-22 19:44:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2020-12-22 19:44:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-22 19:44:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2020-12-22 19:44:03,808 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 123 [2020-12-22 19:44:03,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:44:03,808 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2020-12-22 19:44:03,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:44:03,809 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2020-12-22 19:44:03,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 19:44:03,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:44:03,810 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:44:04,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 19:44:04,025 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:44:04,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:44:04,026 INFO L82 PathProgramCache]: Analyzing trace with hash -30780109, now seen corresponding path program 8 times [2020-12-22 19:44:04,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:44:04,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67395227] [2020-12-22 19:44:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:44:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:44:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:44:04,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67395227] [2020-12-22 19:44:04,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582963528] [2020-12-22 19:44:04,143 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:44:04,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:44:04,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:44:04,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:44:04,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:44:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:44:04,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:44:04,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-22 19:44:04,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327939048] [2020-12-22 19:44:04,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:44:04,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:44:04,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:44:04,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:44:04,398 INFO L87 Difference]: Start difference. First operand 146 states and 150 transitions. Second operand 11 states. [2020-12-22 19:44:04,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:44:04,460 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2020-12-22 19:44:04,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:44:04,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2020-12-22 19:44:04,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:44:04,462 INFO L225 Difference]: With dead ends: 155 [2020-12-22 19:44:04,463 INFO L226 Difference]: Without dead ends: 155 [2020-12-22 19:44:04,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:44:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-22 19:44:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2020-12-22 19:44:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-22 19:44:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 155 transitions. [2020-12-22 19:44:04,467 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 155 transitions. Word has length 128 [2020-12-22 19:44:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:44:04,467 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 155 transitions. [2020-12-22 19:44:04,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:44:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 155 transitions. [2020-12-22 19:44:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 19:44:04,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:44:04,469 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:44:04,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 19:44:04,684 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:44:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:44:04,685 INFO L82 PathProgramCache]: Analyzing trace with hash -957833856, now seen corresponding path program 9 times [2020-12-22 19:44:04,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:44:04,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300548776] [2020-12-22 19:44:04,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:44:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:44:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:44:04,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300548776] [2020-12-22 19:44:04,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286264958] [2020-12-22 19:44:04,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:44:06,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-22 19:44:06,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:44:06,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 19:44:06,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:44:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 28 proven. 148 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2020-12-22 19:44:06,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:44:06,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 14 [2020-12-22 19:44:06,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160177052] [2020-12-22 19:44:06,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 19:44:06,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:44:06,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 19:44:06,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:44:06,476 INFO L87 Difference]: Start difference. First operand 151 states and 155 transitions. Second operand 14 states. [2020-12-22 19:44:06,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:44:06,708 INFO L93 Difference]: Finished difference Result 160 states and 164 transitions. [2020-12-22 19:44:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:44:06,709 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 133 [2020-12-22 19:44:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:44:06,710 INFO L225 Difference]: With dead ends: 160 [2020-12-22 19:44:06,710 INFO L226 Difference]: Without dead ends: 160 [2020-12-22 19:44:06,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=326, Unknown=0, NotChecked=0, Total=506 [2020-12-22 19:44:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-22 19:44:06,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2020-12-22 19:44:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-22 19:44:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 160 transitions. [2020-12-22 19:44:06,714 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 160 transitions. Word has length 133 [2020-12-22 19:44:06,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:44:06,714 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 160 transitions. [2020-12-22 19:44:06,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 19:44:06,715 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 160 transitions. [2020-12-22 19:44:06,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 19:44:06,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:44:06,716 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:44:06,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-22 19:44:06,930 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:44:06,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:44:06,930 INFO L82 PathProgramCache]: Analyzing trace with hash 624721235, now seen corresponding path program 10 times [2020-12-22 19:44:06,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:44:06,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108262901] [2020-12-22 19:44:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:44:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:44:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:44:07,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108262901] [2020-12-22 19:44:07,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942520721] [2020-12-22 19:44:07,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:44:08,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:44:08,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:44:08,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:44:08,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:44:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-12-22 19:44:08,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:44:08,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-22 19:44:08,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26185977] [2020-12-22 19:44:08,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:44:08,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:44:08,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:44:08,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:44:08,825 INFO L87 Difference]: Start difference. First operand 156 states and 160 transitions. Second operand 13 states. [2020-12-22 19:44:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:44:08,900 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2020-12-22 19:44:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:44:08,900 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-12-22 19:44:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:44:08,902 INFO L225 Difference]: With dead ends: 161 [2020-12-22 19:44:08,902 INFO L226 Difference]: Without dead ends: 161 [2020-12-22 19:44:08,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:44:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-22 19:44:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-12-22 19:44:08,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-12-22 19:44:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2020-12-22 19:44:08,906 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 138 [2020-12-22 19:44:08,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:44:08,907 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2020-12-22 19:44:08,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:44:08,907 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2020-12-22 19:44:08,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 19:44:08,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:44:08,909 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:44:09,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-22 19:44:09,123 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-22 19:44:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:44:09,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1282766496, now seen corresponding path program 11 times [2020-12-22 19:44:09,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:44:09,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828962077] [2020-12-22 19:44:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:44:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:44:09,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:44:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:44:09,463 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:44:09,545 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 19:44:09,545 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 19:44:09,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 19:44:09,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:44:09 BoogieIcfgContainer [2020-12-22 19:44:09,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:44:09,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:44:09,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:44:09,674 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:44:09,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:24" (3/4) ... [2020-12-22 19:44:09,680 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 19:44:09,811 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety-ext3/getNumbers4-2.c-witness.graphml [2020-12-22 19:44:09,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:44:09,812 INFO L168 Benchmark]: Toolchain (without parser) took 46584.23 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 126.8 MB in the beginning and 247.5 MB in the end (delta: -120.7 MB). Peak memory consumption was 43.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:44:09,813 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:44:09,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.07 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:44:09,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.09 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:44:09,814 INFO L168 Benchmark]: Boogie Preprocessor took 49.10 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:44:09,819 INFO L168 Benchmark]: RCFGBuilder took 763.05 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 124.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. [2020-12-22 19:44:09,819 INFO L168 Benchmark]: TraceAbstraction took 45306.13 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 123.5 MB in the beginning and 258.6 MB in the end (delta: -135.0 MB). Peak memory consumption was 181.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:44:09,820 INFO L168 Benchmark]: Witness Printer took 137.55 ms. Allocated memory is still 314.6 MB. Free memory was 258.0 MB in the beginning and 247.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:44:09,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 268.07 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.09 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.10 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 763.05 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 124.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 45306.13 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 123.5 MB in the beginning and 258.6 MB in the end (delta: -135.0 MB). Peak memory consumption was 181.7 MB. Max. memory is 8.0 GB. * Witness Printer took 137.55 ms. Allocated memory is still 314.6 MB. Free memory was 258.0 MB in the beginning and 247.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 38]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L6] static int array[10]; [L17] static int numbers2[10]; [L36] static int numbers4[10]; VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] int i = 0; VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L8] COND FALSE !(i < 10) VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L12] return array; VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L16] int* numbers = getNumbers(); [L18] int i = 0; VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] numbers2[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] numbers2[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] numbers2[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] numbers2[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] numbers2[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] numbers2[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] numbers2[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] numbers2[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] numbers2[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L19] numbers2[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L18] COND FALSE !(i < 10) VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L21] return numbers2; VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L25] int* numbers = getNumbers2(); [L26] int numbers3[10]; [L27] int i = 0; VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] numbers3[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] numbers3[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] numbers3[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] numbers3[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] numbers3[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] numbers3[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] numbers3[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] numbers3[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] numbers3[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L28] numbers3[i] = numbers[i] VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] ++i VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L27] COND FALSE !(i < 10) VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L31] return numbers3; [L31] return numbers3; VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L35] int* numbers = getNumbers3(); [L37] int i = 0; VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L37] COND TRUE i < 10 VAL [array={14:0}, numbers2={17:0}, numbers4={15:0}] [L38] numbers[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.1s, OverallIterations: 40, TraceHistogramMax: 10, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1540 SDtfs, 1855 SDslu, 5838 SDs, 0 SdLazy, 2200 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2468 GetRequests, 2050 SyntacticMatches, 67 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 39 MinimizatonAttempts, 103 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 16.8s SatisfiabilityAnalysisTime, 13.2s InterpolantComputationTime, 4560 NumberOfCodeBlocks, 4119 NumberOfCodeBlocksAsserted, 115 NumberOfCheckSat, 4343 ConstructedInterpolants, 216 QuantifiedInterpolants, 969756 SizeOfPredicates, 68 NumberOfNonLiveVariables, 6548 ConjunctsInSsa, 328 ConjunctsInUnsatCore, 74 InterpolantComputations, 13 PerfectInterpolantSequences, 10753/14203 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...