/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-MemCleanup-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:51:46,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:51:46,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:51:46,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:51:46,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:51:46,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:51:46,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:51:46,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:51:46,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:51:46,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:51:46,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:51:46,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:51:46,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:51:46,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:51:46,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:51:46,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:51:46,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:51:46,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:51:46,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:51:46,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:51:46,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:51:46,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:51:46,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:51:46,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:51:46,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 18:51:46,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 18:51:46,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 18:51:46,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 18:51:46,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 18:51:46,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 18:51:46,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 18:51:46,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 18:51:46,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 18:51:46,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 18:51:46,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 18:51:46,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 18:51:46,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 18:51:46,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 18:51:46,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:51:46,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:51:46,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:51:46,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-64bit-Automizer_Default.epf [2020-12-22 18:51:47,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:51:47,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:51:47,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:51:47,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:51:47,052 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:51:47,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:51:47,053 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 18:51:47,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:51:47,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:51:47,054 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 18:51:47,055 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 18:51:47,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:51:47,056 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 18:51:47,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:51:47,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:51:47,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:51:47,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:51:47,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:51:47,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:51:47,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:51:47,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:51:47,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:51:47,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:51:47,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:51:47,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:51:47,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:51:47,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:51:47,529 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:51:47,530 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:51:47,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i [2020-12-22 18:51:47,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073debddf/ebb16a1e8d644cfea8e6c4e0e4329ad5/FLAG73820f6fd [2020-12-22 18:51:48,399 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:51:48,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i [2020-12-22 18:51:48,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073debddf/ebb16a1e8d644cfea8e6c4e0e4329ad5/FLAG73820f6fd [2020-12-22 18:51:48,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073debddf/ebb16a1e8d644cfea8e6c4e0e4329ad5 [2020-12-22 18:51:48,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:51:48,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:51:48,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:51:48,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:51:48,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:51:48,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:51:48" (1/1) ... [2020-12-22 18:51:48,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5009b635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:48, skipping insertion in model container [2020-12-22 18:51:48,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:51:48" (1/1) ... [2020-12-22 18:51:48,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:51:48,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:51:49,179 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i[24521,24534] [2020-12-22 18:51:49,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:51:49,207 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:51:49,293 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i[24521,24534] [2020-12-22 18:51:49,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:51:49,394 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:51:49,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49 WrapperNode [2020-12-22 18:51:49,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:51:49,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:51:49,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:51:49,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:51:49,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (1/1) ... [2020-12-22 18:51:49,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (1/1) ... [2020-12-22 18:51:49,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:51:49,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:51:49,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:51:49,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:51:49,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (1/1) ... [2020-12-22 18:51:49,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (1/1) ... [2020-12-22 18:51:49,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (1/1) ... [2020-12-22 18:51:49,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (1/1) ... [2020-12-22 18:51:49,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (1/1) ... [2020-12-22 18:51:49,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (1/1) ... [2020-12-22 18:51:49,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (1/1) ... [2020-12-22 18:51:49,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:51:49,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:51:49,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:51:49,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:51:49,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (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 18:51:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 18:51:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 18:51:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:51:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 18:51:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:51:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 18:51:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 18:51:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:51:49,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:51:50,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:51:50,590 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-22 18:51:50,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:51:50 BoogieIcfgContainer [2020-12-22 18:51:50,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:51:50,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:51:50,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:51:50,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:51:50,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:51:48" (1/3) ... [2020-12-22 18:51:50,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3468451c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:51:50, skipping insertion in model container [2020-12-22 18:51:50,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:49" (2/3) ... [2020-12-22 18:51:50,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3468451c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:51:50, skipping insertion in model container [2020-12-22 18:51:50,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:51:50" (3/3) ... [2020-12-22 18:51:50,602 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-12-22 18:51:50,610 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:51:50,617 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2020-12-22 18:51:50,639 INFO L253 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2020-12-22 18:51:50,663 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:51:50,664 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 18:51:50,664 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:51:50,664 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:51:50,664 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:51:50,665 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:51:50,665 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:51:50,665 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:51:50,685 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-12-22 18:51:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 18:51:50,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:50,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:50,694 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:50,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:50,701 INFO L82 PathProgramCache]: Analyzing trace with hash 217248027, now seen corresponding path program 1 times [2020-12-22 18:51:50,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:50,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144020807] [2020-12-22 18:51:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:50,882 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 18:51:50,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144020807] [2020-12-22 18:51:50,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:50,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:51:50,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620291806] [2020-12-22 18:51:50,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 18:51:50,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 18:51:50,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:51:50,912 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2020-12-22 18:51:50,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:50,934 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2020-12-22 18:51:50,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 18:51:50,936 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 18:51:50,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:50,947 INFO L225 Difference]: With dead ends: 88 [2020-12-22 18:51:50,948 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 18:51:50,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:51:50,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 18:51:50,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-12-22 18:51:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 18:51:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2020-12-22 18:51:50,998 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 9 [2020-12-22 18:51:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:50,999 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2020-12-22 18:51:50,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 18:51:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2020-12-22 18:51:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 18:51:51,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:51,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:51,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:51:51,001 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:51,002 INFO L82 PathProgramCache]: Analyzing trace with hash -2109896044, now seen corresponding path program 1 times [2020-12-22 18:51:51,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:51,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264190489] [2020-12-22 18:51:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:51,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264190489] [2020-12-22 18:51:51,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:51,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:51:51,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438013275] [2020-12-22 18:51:51,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:51:51,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:51,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:51:51,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:51,185 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand 3 states. [2020-12-22 18:51:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:51,427 INFO L93 Difference]: Finished difference Result 153 states and 176 transitions. [2020-12-22 18:51:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:51:51,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-22 18:51:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:51,432 INFO L225 Difference]: With dead ends: 153 [2020-12-22 18:51:51,433 INFO L226 Difference]: Without dead ends: 153 [2020-12-22 18:51:51,437 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 18:51:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-22 18:51:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 83. [2020-12-22 18:51:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 18:51:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-12-22 18:51:51,449 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 11 [2020-12-22 18:51:51,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:51,450 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-12-22 18:51:51,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:51:51,450 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-12-22 18:51:51,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 18:51:51,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:51,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:51,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:51:51,451 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:51,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:51,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2109896043, now seen corresponding path program 1 times [2020-12-22 18:51:51,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:51,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682141899] [2020-12-22 18:51:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:51,527 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 18:51:51,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682141899] [2020-12-22 18:51:51,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:51,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:51:51,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56140661] [2020-12-22 18:51:51,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:51:51,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:51,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:51:51,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:51,530 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 3 states. [2020-12-22 18:51:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:51,728 INFO L93 Difference]: Finished difference Result 154 states and 176 transitions. [2020-12-22 18:51:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:51:51,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-22 18:51:51,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:51,731 INFO L225 Difference]: With dead ends: 154 [2020-12-22 18:51:51,731 INFO L226 Difference]: Without dead ends: 154 [2020-12-22 18:51:51,732 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 18:51:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-22 18:51:51,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 82. [2020-12-22 18:51:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 18:51:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2020-12-22 18:51:51,741 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 11 [2020-12-22 18:51:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:51,741 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2020-12-22 18:51:51,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:51:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2020-12-22 18:51:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 18:51:51,742 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:51,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:51,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 18:51:51,743 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:51,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:51,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1637235172, now seen corresponding path program 1 times [2020-12-22 18:51:51,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:51,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351340058] [2020-12-22 18:51:51,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:51,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:51,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351340058] [2020-12-22 18:51:51,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:51,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 18:51:51,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701663324] [2020-12-22 18:51:51,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:51:51,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:51,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:51:51,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:51:51,895 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand 6 states. [2020-12-22 18:51:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:52,063 INFO L93 Difference]: Finished difference Result 96 states and 111 transitions. [2020-12-22 18:51:52,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:51:52,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-12-22 18:51:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:52,066 INFO L225 Difference]: With dead ends: 96 [2020-12-22 18:51:52,066 INFO L226 Difference]: Without dead ends: 96 [2020-12-22 18:51:52,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:51:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-22 18:51:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2020-12-22 18:51:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 18:51:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2020-12-22 18:51:52,075 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 20 [2020-12-22 18:51:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:52,076 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2020-12-22 18:51:52,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:51:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2020-12-22 18:51:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 18:51:52,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:52,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:52,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 18:51:52,078 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:52,078 INFO L82 PathProgramCache]: Analyzing trace with hash -637204731, now seen corresponding path program 1 times [2020-12-22 18:51:52,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:52,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539438970] [2020-12-22 18:51:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:51:52,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539438970] [2020-12-22 18:51:52,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:52,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 18:51:52,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871287989] [2020-12-22 18:51:52,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:51:52,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:52,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:51:52,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:51:52,189 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand 6 states. [2020-12-22 18:51:52,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:52,416 INFO L93 Difference]: Finished difference Result 194 states and 218 transitions. [2020-12-22 18:51:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:51:52,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-22 18:51:52,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:52,419 INFO L225 Difference]: With dead ends: 194 [2020-12-22 18:51:52,419 INFO L226 Difference]: Without dead ends: 194 [2020-12-22 18:51:52,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:51:52,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-12-22 18:51:52,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 97. [2020-12-22 18:51:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-22 18:51:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2020-12-22 18:51:52,438 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 23 [2020-12-22 18:51:52,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:52,438 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2020-12-22 18:51:52,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:51:52,439 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2020-12-22 18:51:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 18:51:52,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:52,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:52,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 18:51:52,444 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:52,444 INFO L82 PathProgramCache]: Analyzing trace with hash -637202809, now seen corresponding path program 1 times [2020-12-22 18:51:52,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:52,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023156119] [2020-12-22 18:51:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:51:52,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023156119] [2020-12-22 18:51:52,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:52,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:51:52,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891850482] [2020-12-22 18:51:52,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:51:52,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:52,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:51:52,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:52,578 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand 3 states. [2020-12-22 18:51:52,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:52,694 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2020-12-22 18:51:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:51:52,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 18:51:52,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:52,696 INFO L225 Difference]: With dead ends: 107 [2020-12-22 18:51:52,696 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 18:51:52,697 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 18:51:52,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 18:51:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-12-22 18:51:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 18:51:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2020-12-22 18:51:52,705 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 23 [2020-12-22 18:51:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:52,705 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2020-12-22 18:51:52,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:51:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2020-12-22 18:51:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 18:51:52,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:52,707 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:52,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 18:51:52,707 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:52,708 INFO L82 PathProgramCache]: Analyzing trace with hash -637202808, now seen corresponding path program 1 times [2020-12-22 18:51:52,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:52,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223472944] [2020-12-22 18:51:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:51:52,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223472944] [2020-12-22 18:51:52,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:52,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 18:51:52,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859308652] [2020-12-22 18:51:52,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:51:52,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:52,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:51:52,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:51:52,899 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand 7 states. [2020-12-22 18:51:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:53,119 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2020-12-22 18:51:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:51:53,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-22 18:51:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:53,122 INFO L225 Difference]: With dead ends: 142 [2020-12-22 18:51:53,122 INFO L226 Difference]: Without dead ends: 142 [2020-12-22 18:51:53,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:51:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-22 18:51:53,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 106. [2020-12-22 18:51:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-22 18:51:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2020-12-22 18:51:53,131 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 23 [2020-12-22 18:51:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:53,132 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2020-12-22 18:51:53,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:51:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2020-12-22 18:51:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 18:51:53,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:53,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:53,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 18:51:53,134 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:53,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:53,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1446549434, now seen corresponding path program 1 times [2020-12-22 18:51:53,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:53,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193040933] [2020-12-22 18:51:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:53,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193040933] [2020-12-22 18:51:53,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524052352] [2020-12-22 18:51:53,255 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 18:51:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:53,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 18:51:53,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:53,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:51:53,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2020-12-22 18:51:53,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314490309] [2020-12-22 18:51:53,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:51:53,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:53,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:51:53,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:51:53,491 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 7 states. [2020-12-22 18:51:53,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:53,611 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2020-12-22 18:51:53,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:51:53,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-22 18:51:53,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:53,612 INFO L225 Difference]: With dead ends: 109 [2020-12-22 18:51:53,613 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 18:51:53,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:51:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 18:51:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 94. [2020-12-22 18:51:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-22 18:51:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2020-12-22 18:51:53,619 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 23 [2020-12-22 18:51:53,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:53,620 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2020-12-22 18:51:53,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:51:53,620 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2020-12-22 18:51:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 18:51:53,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:53,621 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:53,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-22 18:51:53,835 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:53,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:53,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1490473361, now seen corresponding path program 1 times [2020-12-22 18:51:53,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:53,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902500258] [2020-12-22 18:51:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:53,985 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 18:51:53,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902500258] [2020-12-22 18:51:53,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874199803] [2020-12-22 18:51:53,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:54,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 18:51:54,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:54,186 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 18:51:54,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:54,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-12-22 18:51:54,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419552420] [2020-12-22 18:51:54,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 18:51:54,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:54,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 18:51:54,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:51:54,189 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand 11 states. [2020-12-22 18:51:54,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:54,421 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2020-12-22 18:51:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 18:51:54,422 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-12-22 18:51:54,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:54,423 INFO L225 Difference]: With dead ends: 119 [2020-12-22 18:51:54,423 INFO L226 Difference]: Without dead ends: 119 [2020-12-22 18:51:54,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 18:51:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-22 18:51:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-12-22 18:51:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 18:51:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2020-12-22 18:51:54,428 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 25 [2020-12-22 18:51:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:54,428 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2020-12-22 18:51:54,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 18:51:54,428 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2020-12-22 18:51:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 18:51:54,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:54,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:54,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:54,644 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:54,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:54,645 INFO L82 PathProgramCache]: Analyzing trace with hash -704088865, now seen corresponding path program 2 times [2020-12-22 18:51:54,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:54,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343224423] [2020-12-22 18:51:54,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 18:51:54,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343224423] [2020-12-22 18:51:54,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712777780] [2020-12-22 18:51:54,780 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 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 18:51:54,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:51:54,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:51:54,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 18:51:54,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:54,954 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 18:51:54,956 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:54,962 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:54,963 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:54,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 18:51:55,013 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,013 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 18:51:55,017 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,044 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-22 18:51:55,047 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 18:51:55,048 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-12-22 18:51:55,096 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,097 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 18:51:55,099 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,115 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-22 18:51:55,117 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 18:51:55,118 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-12-22 18:51:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 18:51:55,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:51:55,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2020-12-22 18:51:55,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771004275] [2020-12-22 18:51:55,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:51:55,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:55,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:51:55,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:51:55,158 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 3 states. [2020-12-22 18:51:55,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:55,197 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2020-12-22 18:51:55,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:51:55,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 18:51:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:55,199 INFO L225 Difference]: With dead ends: 97 [2020-12-22 18:51:55,199 INFO L226 Difference]: Without dead ends: 97 [2020-12-22 18:51:55,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 2 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 18:51:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-22 18:51:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-12-22 18:51:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-22 18:51:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-12-22 18:51:55,203 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 30 [2020-12-22 18:51:55,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:55,204 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-12-22 18:51:55,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:51:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-12-22 18:51:55,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 18:51:55,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:55,205 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:55,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 18:51:55,419 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:55,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:55,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1108999016, now seen corresponding path program 1 times [2020-12-22 18:51:55,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:55,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530303926] [2020-12-22 18:51:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 18:51:55,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530303926] [2020-12-22 18:51:55,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:55,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 18:51:55,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670814896] [2020-12-22 18:51:55,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:51:55,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:55,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:51:55,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:51:55,561 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 8 states. [2020-12-22 18:51:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:55,860 INFO L93 Difference]: Finished difference Result 182 states and 206 transitions. [2020-12-22 18:51:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 18:51:55,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 18:51:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:55,863 INFO L225 Difference]: With dead ends: 182 [2020-12-22 18:51:55,864 INFO L226 Difference]: Without dead ends: 182 [2020-12-22 18:51:55,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 18:51:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-22 18:51:55,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 105. [2020-12-22 18:51:55,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-22 18:51:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-12-22 18:51:55,870 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 33 [2020-12-22 18:51:55,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:55,873 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-12-22 18:51:55,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:51:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-12-22 18:51:55,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 18:51:55,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:55,883 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:55,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 18:51:55,884 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:55,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1108999017, now seen corresponding path program 1 times [2020-12-22 18:51:55,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:55,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087939350] [2020-12-22 18:51:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 18:51:56,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087939350] [2020-12-22 18:51:56,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:56,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 18:51:56,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807622320] [2020-12-22 18:51:56,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:51:56,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:56,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:51:56,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:51:56,052 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 8 states. [2020-12-22 18:51:56,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:56,405 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2020-12-22 18:51:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 18:51:56,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 18:51:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:56,410 INFO L225 Difference]: With dead ends: 172 [2020-12-22 18:51:56,410 INFO L226 Difference]: Without dead ends: 172 [2020-12-22 18:51:56,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 18:51:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-12-22 18:51:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 105. [2020-12-22 18:51:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-22 18:51:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2020-12-22 18:51:56,417 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 33 [2020-12-22 18:51:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:56,418 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2020-12-22 18:51:56,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:51:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2020-12-22 18:51:56,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 18:51:56,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:56,423 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:56,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 18:51:56,423 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:56,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:56,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1299757381, now seen corresponding path program 1 times [2020-12-22 18:51:56,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:56,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441517319] [2020-12-22 18:51:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 18:51:56,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441517319] [2020-12-22 18:51:56,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:56,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 18:51:56,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976497018] [2020-12-22 18:51:56,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:51:56,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:56,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:51:56,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:51:56,538 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand 8 states. [2020-12-22 18:51:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:56,689 INFO L93 Difference]: Finished difference Result 151 states and 172 transitions. [2020-12-22 18:51:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:51:56,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-12-22 18:51:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:56,692 INFO L225 Difference]: With dead ends: 151 [2020-12-22 18:51:56,692 INFO L226 Difference]: Without dead ends: 151 [2020-12-22 18:51:56,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 18:51:56,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-22 18:51:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 105. [2020-12-22 18:51:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-22 18:51:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-12-22 18:51:56,697 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 36 [2020-12-22 18:51:56,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:56,698 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-12-22 18:51:56,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:51:56,698 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-12-22 18:51:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 18:51:56,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:56,702 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:56,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 18:51:56,703 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:56,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1301389675, now seen corresponding path program 1 times [2020-12-22 18:51:56,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:56,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817163110] [2020-12-22 18:51:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:56,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817163110] [2020-12-22 18:51:56,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686085169] [2020-12-22 18:51:56,848 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 18:51:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:56,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 18:51:56,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:56,964 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 18:51:56,965 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:56,969 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:56,969 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:56,970 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 18:51:57,008 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:57,008 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 18:51:57,011 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:57,040 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-22 18:51:57,041 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:57,041 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-12-22 18:51:57,092 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 18:51:57,093 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:57,109 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:57,111 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:57,111 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-12-22 18:51:57,362 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2020-12-22 18:51:57,365 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:57,384 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:57,387 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 18:51:57,387 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:55, output treesize:36 [2020-12-22 18:51:57,552 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:57,553 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 29 [2020-12-22 18:51:57,556 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-22 18:51:57,561 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-22 18:51:57,563 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 18:51:57,584 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:57,592 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 18:51:57,592 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:11 [2020-12-22 18:51:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:57,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:57,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2020-12-22 18:51:57,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450430926] [2020-12-22 18:51:57,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 18:51:57,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:57,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 18:51:57,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-12-22 18:51:57,626 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 19 states. [2020-12-22 18:51:58,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:58,607 INFO L93 Difference]: Finished difference Result 188 states and 212 transitions. [2020-12-22 18:51:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 18:51:58,608 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2020-12-22 18:51:58,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:58,609 INFO L225 Difference]: With dead ends: 188 [2020-12-22 18:51:58,610 INFO L226 Difference]: Without dead ends: 188 [2020-12-22 18:51:58,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2020-12-22 18:51:58,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-22 18:51:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 108. [2020-12-22 18:51:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 18:51:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2020-12-22 18:51:58,615 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 36 [2020-12-22 18:51:58,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:58,615 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2020-12-22 18:51:58,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 18:51:58,615 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2020-12-22 18:51:58,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 18:51:58,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:58,616 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:58,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:58,817 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:58,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1301389676, now seen corresponding path program 1 times [2020-12-22 18:51:58,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:58,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084812601] [2020-12-22 18:51:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:59,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084812601] [2020-12-22 18:51:59,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856498160] [2020-12-22 18:51:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:59,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-22 18:51:59,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:59,176 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 18:51:59,176 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:59,180 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:59,181 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:59,181 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 18:51:59,224 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:59,225 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 18:51:59,230 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:59,244 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-12-22 18:51:59,245 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:59,246 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:17 [2020-12-22 18:51:59,280 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 18:51:59,283 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:59,293 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:59,296 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 18:51:59,298 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:59,308 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:59,309 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:59,310 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:28 [2020-12-22 18:51:59,598 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:59,599 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 55 [2020-12-22 18:51:59,602 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:51:59,605 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:51:59,607 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 18:51:59,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:59,628 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:59,629 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 40 [2020-12-22 18:51:59,635 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:51:59,636 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:51:59,643 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:51:59,647 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:59,666 INFO L625 ElimStorePlain]: treesize reduction 6, result has 81.3 percent of original size [2020-12-22 18:51:59,670 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 18:51:59,671 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:86, output treesize:14 [2020-12-22 18:51:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:59,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:59,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2020-12-22 18:51:59,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746012515] [2020-12-22 18:51:59,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 18:51:59,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:59,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 18:51:59,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2020-12-22 18:51:59,704 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand 22 states. [2020-12-22 18:52:00,338 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-12-22 18:52:00,533 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-12-22 18:52:00,746 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-12-22 18:52:00,944 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-12-22 18:52:01,128 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 18:52:01,586 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-12-22 18:52:01,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:01,911 INFO L93 Difference]: Finished difference Result 216 states and 240 transitions. [2020-12-22 18:52:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 18:52:01,911 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2020-12-22 18:52:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:01,913 INFO L225 Difference]: With dead ends: 216 [2020-12-22 18:52:01,913 INFO L226 Difference]: Without dead ends: 216 [2020-12-22 18:52:01,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=378, Invalid=1028, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 18:52:01,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-22 18:52:01,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 108. [2020-12-22 18:52:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 18:52:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2020-12-22 18:52:01,921 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 36 [2020-12-22 18:52:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:01,922 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2020-12-22 18:52:01,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 18:52:01,922 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2020-12-22 18:52:01,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 18:52:01,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:01,923 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:02,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 18:52:02,139 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:02,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:02,140 INFO L82 PathProgramCache]: Analyzing trace with hash -971460510, now seen corresponding path program 1 times [2020-12-22 18:52:02,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:02,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609731141] [2020-12-22 18:52:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:52:02,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609731141] [2020-12-22 18:52:02,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945052684] [2020-12-22 18:52:02,243 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 18:52:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:02,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 18:52:02,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:52:02,384 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 18:52:02,385 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:02,391 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:02,392 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:52:02,392 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-12-22 18:52:02,491 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2020-12-22 18:52:02,492 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:02,498 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:02,500 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 18:52:02,500 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:26 [2020-12-22 18:52:02,581 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:02,582 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2020-12-22 18:52:02,584 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:02,589 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:02,591 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:52:02,591 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:30, output treesize:4 [2020-12-22 18:52:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:52:02,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:52:02,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 19 [2020-12-22 18:52:02,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625709139] [2020-12-22 18:52:02,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 18:52:02,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:02,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 18:52:02,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-12-22 18:52:02,602 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 19 states. [2020-12-22 18:52:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:03,368 INFO L93 Difference]: Finished difference Result 159 states and 179 transitions. [2020-12-22 18:52:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 18:52:03,368 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2020-12-22 18:52:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:03,369 INFO L225 Difference]: With dead ends: 159 [2020-12-22 18:52:03,370 INFO L226 Difference]: Without dead ends: 159 [2020-12-22 18:52:03,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-12-22 18:52:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-22 18:52:03,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 108. [2020-12-22 18:52:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 18:52:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2020-12-22 18:52:03,375 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 39 [2020-12-22 18:52:03,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:03,375 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2020-12-22 18:52:03,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 18:52:03,375 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2020-12-22 18:52:03,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 18:52:03,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:03,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:03,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:52:03,591 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:03,592 INFO L82 PathProgramCache]: Analyzing trace with hash -969828216, now seen corresponding path program 2 times [2020-12-22 18:52:03,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:03,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370649894] [2020-12-22 18:52:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:52:03,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370649894] [2020-12-22 18:52:03,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918505310] [2020-12-22 18:52:03,870 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 18:52:03,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:52:03,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:52:03,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-22 18:52:03,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:52:04,008 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 18:52:04,008 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:04,015 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:04,020 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 18:52:04,021 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:04,027 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:04,028 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:52:04,028 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2020-12-22 18:52:04,107 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 18:52:04,108 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:04,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:04,120 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:52:04,120 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:29 [2020-12-22 18:52:04,186 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 18:52:04,198 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:04,199 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2020-12-22 18:52:04,203 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:04,247 INFO L625 ElimStorePlain]: treesize reduction 12, result has 81.8 percent of original size [2020-12-22 18:52:04,253 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 18:52:04,262 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:04,263 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2020-12-22 18:52:04,271 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:04,333 INFO L625 ElimStorePlain]: treesize reduction 16, result has 75.8 percent of original size [2020-12-22 18:52:04,334 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:52:04,335 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:54, output treesize:64 [2020-12-22 18:52:04,583 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 18:52:04,851 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 18:52:05,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 18:52:05,183 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 18:52:05,194 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 18:52:05,230 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:05,231 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 110 [2020-12-22 18:52:05,236 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,237 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,239 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,240 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,243 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,244 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,246 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,248 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,249 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,250 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,253 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,255 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,256 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,259 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,275 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 18:52:05,277 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,279 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,280 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,282 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,284 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,286 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,288 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 18:52:05,290 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,293 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,295 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,297 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 18:52:05,305 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,307 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,309 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 18:52:05,315 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,316 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,319 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,323 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 18:52:05,324 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,325 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,327 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,329 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 18:52:05,330 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,331 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,333 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,335 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,337 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,339 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,341 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 18:52:05,342 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,343 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,345 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,348 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,349 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,351 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,352 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,354 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,356 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,357 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 18:52:05,359 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,361 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,363 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 18:52:05,370 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,373 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,375 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,377 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 18:52:05,384 INFO L547 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 18:52:05,459 INFO L625 ElimStorePlain]: treesize reduction 44, result has 84.2 percent of original size [2020-12-22 18:52:05,464 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 18:52:05,477 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:05,477 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 50 [2020-12-22 18:52:05,479 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:05,508 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:05,527 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:05,527 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 164 treesize of output 125 [2020-12-22 18:52:05,531 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,532 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,533 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,535 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,536 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,538 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 18:52:05,539 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,540 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,542 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,544 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,545 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,547 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 18:52:05,548 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,549 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,554 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,556 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 18:52:05,562 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,563 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,564 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 18:52:05,566 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,568 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,569 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,575 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,576 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 18:52:05,582 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,583 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,584 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,586 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,586 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,588 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 18:52:05,589 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,590 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,592 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,595 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,596 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,597 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 18:52:05,599 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,600 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,605 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,607 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 18:52:05,613 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,614 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,615 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 18:52:05,616 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,619 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,620 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 18:52:05,625 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,626 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 18:52:05,630 INFO L547 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 18:52:05,717 INFO L625 ElimStorePlain]: treesize reduction 16, result has 89.8 percent of original size [2020-12-22 18:52:05,735 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:05,735 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 85 [2020-12-22 18:52:05,740 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,741 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,741 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,742 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,744 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,746 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,746 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,748 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,750 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,751 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 18:52:05,752 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,754 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,754 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,756 INFO L639 QuantifierPusher]: Distributing 8 conjuncts over 4 disjuncts [2020-12-22 18:52:05,757 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,758 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,759 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,761 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,762 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 18:52:05,762 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 4 disjuncts [2020-12-22 18:52:05,771 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 18:52:05,772 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-22 18:52:05,780 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 4 disjuncts [2020-12-22 18:52:05,784 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,785 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-22 18:52:05,788 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 4 disjuncts [2020-12-22 18:52:05,792 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,793 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 4 disjuncts [2020-12-22 18:52:05,797 INFO L639 QuantifierPusher]: Distributing 6 conjuncts over 4 disjuncts [2020-12-22 18:52:05,798 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,799 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,800 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,802 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 18:52:05,803 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,803 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 18:52:05,810 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,812 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 18:52:05,814 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,814 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-22 18:52:05,818 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 4 disjuncts [2020-12-22 18:52:05,822 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:05,823 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 4 disjuncts [2020-12-22 18:52:05,826 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 4 disjuncts [2020-12-22 18:52:05,827 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,828 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,829 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,831 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,832 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,835 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,836 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 4 disjuncts [2020-12-22 18:52:05,836 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 18:52:05,838 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 18:52:05,839 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:05,871 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:05,943 INFO L625 ElimStorePlain]: treesize reduction 27, result has 71.6 percent of original size [2020-12-22 18:52:05,949 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-22 18:52:05,950 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:345, output treesize:25 [2020-12-22 18:52:06,099 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 18:52:06,101 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 18:52:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:52:06,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:52:06,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2020-12-22 18:52:06,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439206645] [2020-12-22 18:52:06,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-22 18:52:06,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-22 18:52:06,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-12-22 18:52:06,172 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 31 states. [2020-12-22 18:52:07,216 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 18:52:07,538 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-12-22 18:52:08,103 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-12-22 18:52:08,769 WARN L197 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 94 [2020-12-22 18:52:09,444 WARN L197 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 96 [2020-12-22 18:52:10,332 WARN L197 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 102 [2020-12-22 18:52:11,042 WARN L197 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 94 [2020-12-22 18:52:11,959 WARN L197 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 102 [2020-12-22 18:52:12,574 WARN L197 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 92 [2020-12-22 18:52:13,158 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2020-12-22 18:52:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:16,304 INFO L93 Difference]: Finished difference Result 203 states and 231 transitions. [2020-12-22 18:52:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 18:52:16,305 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 39 [2020-12-22 18:52:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:16,306 INFO L225 Difference]: With dead ends: 203 [2020-12-22 18:52:16,306 INFO L226 Difference]: Without dead ends: 203 [2020-12-22 18:52:16,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 18:52:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-22 18:52:16,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142. [2020-12-22 18:52:16,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 18:52:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 165 transitions. [2020-12-22 18:52:16,313 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 165 transitions. Word has length 39 [2020-12-22 18:52:16,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:16,313 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 165 transitions. [2020-12-22 18:52:16,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-22 18:52:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 165 transitions. [2020-12-22 18:52:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 18:52:16,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:16,314 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:16,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 18:52:16,529 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:16,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1882747466, now seen corresponding path program 1 times [2020-12-22 18:52:16,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:16,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99369050] [2020-12-22 18:52:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 18:52:16,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99369050] [2020-12-22 18:52:16,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484802638] [2020-12-22 18:52:16,607 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 18:52:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:16,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 18:52:16,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:52:16,748 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 18:52:16,750 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 18:52:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 18:52:16,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:52:16,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-12-22 18:52:16,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231160328] [2020-12-22 18:52:16,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 18:52:16,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:16,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 18:52:16,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-12-22 18:52:16,762 INFO L87 Difference]: Start difference. First operand 142 states and 165 transitions. Second operand 13 states. [2020-12-22 18:52:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:17,135 INFO L93 Difference]: Finished difference Result 490 states and 548 transitions. [2020-12-22 18:52:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 18:52:17,135 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-12-22 18:52:17,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:17,139 INFO L225 Difference]: With dead ends: 490 [2020-12-22 18:52:17,139 INFO L226 Difference]: Without dead ends: 490 [2020-12-22 18:52:17,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-12-22 18:52:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-12-22 18:52:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 179. [2020-12-22 18:52:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-22 18:52:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 210 transitions. [2020-12-22 18:52:17,150 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 210 transitions. Word has length 40 [2020-12-22 18:52:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:17,150 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 210 transitions. [2020-12-22 18:52:17,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 18:52:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 210 transitions. [2020-12-22 18:52:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 18:52:17,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:17,152 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:17,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 18:52:17,366 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:17,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:17,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1132356152, now seen corresponding path program 1 times [2020-12-22 18:52:17,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:17,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256751612] [2020-12-22 18:52:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:52:17,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256751612] [2020-12-22 18:52:17,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951175009] [2020-12-22 18:52:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:52:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:17,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 18:52:17,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:52:17,629 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 18:52:17,629 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:17,633 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:17,634 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:52:17,634 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 18:52:17,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:17,653 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 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-22 18:52:17,654 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:17,660 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:17,661 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 18:52:17,662 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:17 [2020-12-22 18:52:17,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:17,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:17,717 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:17,717 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 36 [2020-12-22 18:52:17,719 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:17,741 INFO L625 ElimStorePlain]: treesize reduction 14, result has 65.0 percent of original size [2020-12-22 18:52:17,747 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 18:52:17,747 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:26 [2020-12-22 18:52:17,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:17,872 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:17,872 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 50 [2020-12-22 18:52:17,874 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:17,897 INFO L625 ElimStorePlain]: treesize reduction 28, result has 42.9 percent of original size [2020-12-22 18:52:17,898 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 18:52:17,899 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:21 [2020-12-22 18:52:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:52:17,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:52:17,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2020-12-22 18:52:17,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961385027] [2020-12-22 18:52:17,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 18:52:17,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:17,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 18:52:17,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 18:52:17,944 INFO L87 Difference]: Start difference. First operand 179 states and 210 transitions. Second operand 15 states. [2020-12-22 18:52:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:18,176 INFO L93 Difference]: Finished difference Result 219 states and 255 transitions. [2020-12-22 18:52:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:52:18,176 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-12-22 18:52:18,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:18,178 INFO L225 Difference]: With dead ends: 219 [2020-12-22 18:52:18,178 INFO L226 Difference]: Without dead ends: 219 [2020-12-22 18:52:18,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2020-12-22 18:52:18,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-22 18:52:18,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 177. [2020-12-22 18:52:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-22 18:52:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 208 transitions. [2020-12-22 18:52:18,183 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 208 transitions. Word has length 40 [2020-12-22 18:52:18,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:18,183 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 208 transitions. [2020-12-22 18:52:18,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 18:52:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 208 transitions. [2020-12-22 18:52:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 18:52:18,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:18,184 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:18,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:52:18,395 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:18,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:18,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1132356153, now seen corresponding path program 1 times [2020-12-22 18:52:18,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:18,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146413701] [2020-12-22 18:52:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:52:18,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146413701] [2020-12-22 18:52:18,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207948826] [2020-12-22 18:52:18,563 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 18:52:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:18,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 18:52:18,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:52:18,653 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 18:52:18,653 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:18,657 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:18,658 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:52:18,658 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 18:52:18,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:18,685 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 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-22 18:52:18,686 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:18,693 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:18,694 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 18:52:18,695 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:20 [2020-12-22 18:52:18,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:18,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:18,750 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:18,751 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 36 [2020-12-22 18:52:18,752 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:18,777 INFO L625 ElimStorePlain]: treesize reduction 14, result has 67.4 percent of original size [2020-12-22 18:52:18,779 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 18:52:18,779 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:29 [2020-12-22 18:52:18,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:18,901 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:18,902 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 50 [2020-12-22 18:52:18,904 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:18,931 INFO L625 ElimStorePlain]: treesize reduction 28, result has 46.2 percent of original size [2020-12-22 18:52:18,935 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 18:52:18,936 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:24 [2020-12-22 18:52:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:52:18,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:52:18,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2020-12-22 18:52:18,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786712997] [2020-12-22 18:52:18,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 18:52:18,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:18,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 18:52:18,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-12-22 18:52:18,988 INFO L87 Difference]: Start difference. First operand 177 states and 208 transitions. Second operand 15 states. [2020-12-22 18:52:19,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:19,285 INFO L93 Difference]: Finished difference Result 231 states and 267 transitions. [2020-12-22 18:52:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:52:19,286 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-12-22 18:52:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:19,287 INFO L225 Difference]: With dead ends: 231 [2020-12-22 18:52:19,287 INFO L226 Difference]: Without dead ends: 231 [2020-12-22 18:52:19,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2020-12-22 18:52:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-12-22 18:52:19,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 175. [2020-12-22 18:52:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-22 18:52:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 206 transitions. [2020-12-22 18:52:19,292 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 206 transitions. Word has length 40 [2020-12-22 18:52:19,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:19,292 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 206 transitions. [2020-12-22 18:52:19,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 18:52:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 206 transitions. [2020-12-22 18:52:19,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 18:52:19,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:19,293 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:19,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:52:19,504 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:19,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:19,505 INFO L82 PathProgramCache]: Analyzing trace with hash 91129893, now seen corresponding path program 2 times [2020-12-22 18:52:19,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:19,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410836995] [2020-12-22 18:52:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 18:52:19,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410836995] [2020-12-22 18:52:19,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203046321] [2020-12-22 18:52:19,686 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 18:52:19,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:52:19,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:52:19,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 18:52:19,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:52:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 18:52:19,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:52:19,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-12-22 18:52:19,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946730125] [2020-12-22 18:52:19,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 18:52:19,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:19,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 18:52:19,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-12-22 18:52:19,845 INFO L87 Difference]: Start difference. First operand 175 states and 206 transitions. Second operand 13 states. [2020-12-22 18:52:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:20,126 INFO L93 Difference]: Finished difference Result 394 states and 445 transitions. [2020-12-22 18:52:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 18:52:20,127 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-12-22 18:52:20,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:20,129 INFO L225 Difference]: With dead ends: 394 [2020-12-22 18:52:20,129 INFO L226 Difference]: Without dead ends: 394 [2020-12-22 18:52:20,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-12-22 18:52:20,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-12-22 18:52:20,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 208. [2020-12-22 18:52:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-12-22 18:52:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 240 transitions. [2020-12-22 18:52:20,137 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 240 transitions. Word has length 42 [2020-12-22 18:52:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:20,137 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 240 transitions. [2020-12-22 18:52:20,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 18:52:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 240 transitions. [2020-12-22 18:52:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:52:20,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:20,138 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:20,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 18:52:20,352 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:20,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:20,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1128380089, now seen corresponding path program 1 times [2020-12-22 18:52:20,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:20,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90345849] [2020-12-22 18:52:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:52:20,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90345849] [2020-12-22 18:52:20,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:52:20,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:52:20,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716774715] [2020-12-22 18:52:20,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:52:20,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:20,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:52:20,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:52:20,419 INFO L87 Difference]: Start difference. First operand 208 states and 240 transitions. Second operand 3 states. [2020-12-22 18:52:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:20,463 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2020-12-22 18:52:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:52:20,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 18:52:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:20,465 INFO L225 Difference]: With dead ends: 237 [2020-12-22 18:52:20,465 INFO L226 Difference]: Without dead ends: 237 [2020-12-22 18:52:20,467 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 18:52:20,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-22 18:52:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 207. [2020-12-22 18:52:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-12-22 18:52:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 239 transitions. [2020-12-22 18:52:20,472 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 239 transitions. Word has length 44 [2020-12-22 18:52:20,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:20,472 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 239 transitions. [2020-12-22 18:52:20,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:52:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 239 transitions. [2020-12-22 18:52:20,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:52:20,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:20,473 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:20,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 18:52:20,474 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:20,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:20,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1128380088, now seen corresponding path program 1 times [2020-12-22 18:52:20,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:20,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825178110] [2020-12-22 18:52:20,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:52:20,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825178110] [2020-12-22 18:52:20,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:52:20,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:52:20,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677543231] [2020-12-22 18:52:20,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:52:20,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:20,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:52:20,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:52:20,517 INFO L87 Difference]: Start difference. First operand 207 states and 239 transitions. Second operand 3 states. [2020-12-22 18:52:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:20,559 INFO L93 Difference]: Finished difference Result 238 states and 273 transitions. [2020-12-22 18:52:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:52:20,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 18:52:20,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:20,561 INFO L225 Difference]: With dead ends: 238 [2020-12-22 18:52:20,561 INFO L226 Difference]: Without dead ends: 238 [2020-12-22 18:52:20,561 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 18:52:20,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-12-22 18:52:20,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 206. [2020-12-22 18:52:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-22 18:52:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 238 transitions. [2020-12-22 18:52:20,567 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 238 transitions. Word has length 44 [2020-12-22 18:52:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:20,567 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 238 transitions. [2020-12-22 18:52:20,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:52:20,568 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 238 transitions. [2020-12-22 18:52:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:52:20,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:20,569 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:20,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 18:52:20,569 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:20,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1128380034, now seen corresponding path program 1 times [2020-12-22 18:52:20,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:20,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346763995] [2020-12-22 18:52:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:52:20,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346763995] [2020-12-22 18:52:20,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:52:20,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 18:52:20,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106421033] [2020-12-22 18:52:20,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:52:20,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:20,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:52:20,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:52:20,626 INFO L87 Difference]: Start difference. First operand 206 states and 238 transitions. Second operand 6 states. [2020-12-22 18:52:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:20,691 INFO L93 Difference]: Finished difference Result 275 states and 313 transitions. [2020-12-22 18:52:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:52:20,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-12-22 18:52:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:20,694 INFO L225 Difference]: With dead ends: 275 [2020-12-22 18:52:20,694 INFO L226 Difference]: Without dead ends: 275 [2020-12-22 18:52:20,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:52:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-22 18:52:20,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 218. [2020-12-22 18:52:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-22 18:52:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 252 transitions. [2020-12-22 18:52:20,700 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 252 transitions. Word has length 44 [2020-12-22 18:52:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:20,700 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 252 transitions. [2020-12-22 18:52:20,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:52:20,701 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 252 transitions. [2020-12-22 18:52:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:52:20,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:20,702 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:20,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 18:52:20,702 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash -282829994, now seen corresponding path program 3 times [2020-12-22 18:52:20,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:20,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447932814] [2020-12-22 18:52:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 18:52:20,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447932814] [2020-12-22 18:52:20,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177573419] [2020-12-22 18:52:20,811 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 18:52:20,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 18:52:20,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:52:20,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 18:52:20,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:52:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 18:52:20,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:52:20,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2020-12-22 18:52:20,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801727089] [2020-12-22 18:52:20,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 18:52:20,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:20,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 18:52:20,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-12-22 18:52:20,975 INFO L87 Difference]: Start difference. First operand 218 states and 252 transitions. Second operand 12 states. [2020-12-22 18:52:21,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:21,166 INFO L93 Difference]: Finished difference Result 370 states and 418 transitions. [2020-12-22 18:52:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 18:52:21,167 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-12-22 18:52:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:21,169 INFO L225 Difference]: With dead ends: 370 [2020-12-22 18:52:21,169 INFO L226 Difference]: Without dead ends: 370 [2020-12-22 18:52:21,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-12-22 18:52:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-12-22 18:52:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 191. [2020-12-22 18:52:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-12-22 18:52:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 220 transitions. [2020-12-22 18:52:21,176 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 220 transitions. Word has length 44 [2020-12-22 18:52:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:21,176 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 220 transitions. [2020-12-22 18:52:21,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 18:52:21,176 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 220 transitions. [2020-12-22 18:52:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 18:52:21,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:21,177 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:21,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 18:52:21,390 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:21,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:21,391 INFO L82 PathProgramCache]: Analyzing trace with hash 432514138, now seen corresponding path program 1 times [2020-12-22 18:52:21,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:21,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90380194] [2020-12-22 18:52:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 18:52:21,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90380194] [2020-12-22 18:52:21,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:52:21,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 18:52:21,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979293725] [2020-12-22 18:52:21,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:52:21,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:21,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:52:21,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:52:21,453 INFO L87 Difference]: Start difference. First operand 191 states and 220 transitions. Second operand 8 states. [2020-12-22 18:52:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:21,670 INFO L93 Difference]: Finished difference Result 252 states and 289 transitions. [2020-12-22 18:52:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 18:52:21,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-12-22 18:52:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:21,672 INFO L225 Difference]: With dead ends: 252 [2020-12-22 18:52:21,672 INFO L226 Difference]: Without dead ends: 252 [2020-12-22 18:52:21,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 18:52:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-22 18:52:21,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 200. [2020-12-22 18:52:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-22 18:52:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 235 transitions. [2020-12-22 18:52:21,677 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 235 transitions. Word has length 45 [2020-12-22 18:52:21,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:21,677 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 235 transitions. [2020-12-22 18:52:21,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:52:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 235 transitions. [2020-12-22 18:52:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 18:52:21,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:21,678 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:21,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 18:52:21,678 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:21,679 INFO L82 PathProgramCache]: Analyzing trace with hash 432514139, now seen corresponding path program 1 times [2020-12-22 18:52:21,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:21,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118719254] [2020-12-22 18:52:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:52:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 18:52:21,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118719254] [2020-12-22 18:52:21,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:52:21,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 18:52:21,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263822312] [2020-12-22 18:52:21,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:52:21,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:21,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:52:21,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:52:21,777 INFO L87 Difference]: Start difference. First operand 200 states and 235 transitions. Second operand 8 states. [2020-12-22 18:52:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:22,049 INFO L93 Difference]: Finished difference Result 252 states and 288 transitions. [2020-12-22 18:52:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 18:52:22,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-12-22 18:52:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:22,051 INFO L225 Difference]: With dead ends: 252 [2020-12-22 18:52:22,051 INFO L226 Difference]: Without dead ends: 252 [2020-12-22 18:52:22,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 18:52:22,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-22 18:52:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 202. [2020-12-22 18:52:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-22 18:52:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 236 transitions. [2020-12-22 18:52:22,056 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 236 transitions. Word has length 45 [2020-12-22 18:52:22,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:22,057 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 236 transitions. [2020-12-22 18:52:22,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:52:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 236 transitions. [2020-12-22 18:52:22,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 18:52:22,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:22,058 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:22,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 18:52:22,058 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:22,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1181974787, now seen corresponding path program 1 times [2020-12-22 18:52:22,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:22,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677707973] [2020-12-22 18:52:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 18:52:22,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 18:52:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 18:52:22,093 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 18:52:22,123 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 18:52:22,124 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 18:52:22,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 18:52:22,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:52:22 BoogieIcfgContainer [2020-12-22 18:52:22,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 18:52:22,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 18:52:22,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 18:52:22,183 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 18:52:22,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:51:50" (3/4) ... [2020-12-22 18:52:22,185 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 18:52:22,243 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-ext3-properties/sll_nondet_insert-1.i-witness.graphml [2020-12-22 18:52:22,244 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 18:52:22,245 INFO L168 Benchmark]: Toolchain (without parser) took 33534.87 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 124.9 MB in the beginning and 107.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 181.9 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:22,245 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 18:52:22,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.30 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 100.9 MB in the end (delta: 23.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:22,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 139.79 ms. Allocated memory is still 151.0 MB. Free memory was 100.7 MB in the beginning and 131.9 MB in the end (delta: -31.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:22,246 INFO L168 Benchmark]: Boogie Preprocessor took 86.24 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 130.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:22,246 INFO L168 Benchmark]: RCFGBuilder took 968.00 ms. Allocated memory is still 151.0 MB. Free memory was 130.3 MB in the beginning and 96.3 MB in the end (delta: 34.1 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:22,247 INFO L168 Benchmark]: TraceAbstraction took 31587.07 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 95.7 MB in the beginning and 112.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 147.8 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:22,247 INFO L168 Benchmark]: Witness Printer took 61.37 ms. Allocated memory is still 314.6 MB. Free memory was 112.6 MB in the beginning and 107.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:22,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 680.30 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 100.9 MB in the end (delta: 23.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 139.79 ms. Allocated memory is still 151.0 MB. Free memory was 100.7 MB in the beginning and 131.9 MB in the end (delta: -31.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.24 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 130.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 968.00 ms. Allocated memory is still 151.0 MB. Free memory was 130.3 MB in the beginning and 96.3 MB in the end (delta: 34.1 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 31587.07 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 95.7 MB in the beginning and 112.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 147.8 MB. Max. memory is 8.0 GB. * Witness Printer took 61.37 ms. Allocated memory is still 314.6 MB. Free memory was 112.6 MB in the beginning and 107.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 641]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L627] const int len = _get_nondet_int(2, 5); [L628] SLL s = sll_create(len); [L575] SLL head = ((void *)0); [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND FALSE !(len-- > 0) [L584] return head; [L628] SLL s = sll_create(len); [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND TRUE len < until && __VERIFIER_nondet_int() [L622] len++ [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L629] const int k = _get_nondet_int(0, len - 1); [L630] int i = 0; [L631] i < k && __VERIFIER_nondet_int() [L631] i < k && __VERIFIER_nondet_int() [L631] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L636] EXPR \read(s) [L587] int len = 0; [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND FALSE !(\read(head)) [L592] return len; [L636] COND TRUE k + len != sll_length(s) [L641] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 25 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.4s, OverallIterations: 28, TraceHistogramMax: 4, AutomataDifference: 18.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2283 SDtfs, 10172 SDslu, 9462 SDs, 0 SdLazy, 4258 SolverSat, 495 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 787 GetRequests, 412 SyntacticMatches, 9 SemanticMatches, 366 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=24, 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, 27 MinimizatonAttempts, 1814 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 1357 NumberOfCodeBlocks, 1357 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1273 ConstructedInterpolants, 79 QuantifiedInterpolants, 474911 SizeOfPredicates, 157 NumberOfNonLiveVariables, 2360 ConjunctsInSsa, 319 ConjunctsInUnsatCore, 39 InterpolantComputations, 17 PerfectInterpolantSequences, 261/380 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...