/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-simple/dll2c_update_all.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:29:14,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:29:14,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:29:14,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:29:14,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:29:14,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:29:14,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:29:14,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:29:14,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:29:14,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:29:14,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:29:14,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:29:14,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:29:14,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:29:14,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:29:14,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:29:14,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:29:14,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:29:14,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:29:14,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:29:14,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:29:14,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:29:14,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:29:14,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:29:14,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:29:14,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:29:14,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:29:14,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:29:14,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:29:14,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:29:14,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:29:14,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:29:14,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:29:14,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:29:14,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:29:14,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:29:14,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:29:14,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:29:14,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:29:14,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:29:14,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:29:14,747 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:29:14,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:29:14,747 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:29:14,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:29:14,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:29:14,748 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:29:14,750 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:29:14,750 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:29:14,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:29:14,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:29:14,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:29:14,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:29:14,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:29:14,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:29:14,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:29:14,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:29:14,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:29:14,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:29:14,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:29:14,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:29:14,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:29:15,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:29:15,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:29:15,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:29:15,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:29:15,285 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:29:15,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_update_all.i [2020-12-22 19:29:15,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1726b00/1808a275c02448fcaa9d8526b5c0fc06/FLAG316e6c58f [2020-12-22 19:29:16,134 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:29:16,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_update_all.i [2020-12-22 19:29:16,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1726b00/1808a275c02448fcaa9d8526b5c0fc06/FLAG316e6c58f [2020-12-22 19:29:16,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1726b00/1808a275c02448fcaa9d8526b5c0fc06 [2020-12-22 19:29:16,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:29:16,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:29:16,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:29:16,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:29:16,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:29:16,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:29:16" (1/1) ... [2020-12-22 19:29:16,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e53ae20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:16, skipping insertion in model container [2020-12-22 19:29:16,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:29:16" (1/1) ... [2020-12-22 19:29:16,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:29:16,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:29:16,885 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-simple/dll2c_update_all.i[24538,24551] [2020-12-22 19:29:16,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:29:16,900 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:29:16,950 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-simple/dll2c_update_all.i[24538,24551] [2020-12-22 19:29:16,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:29:17,036 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:29:17,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17 WrapperNode [2020-12-22 19:29:17,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:29:17,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:29:17,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:29:17,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:29:17,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (1/1) ... [2020-12-22 19:29:17,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (1/1) ... [2020-12-22 19:29:17,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:29:17,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:29:17,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:29:17,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:29:17,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (1/1) ... [2020-12-22 19:29:17,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (1/1) ... [2020-12-22 19:29:17,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (1/1) ... [2020-12-22 19:29:17,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (1/1) ... [2020-12-22 19:29:17,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (1/1) ... [2020-12-22 19:29:17,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (1/1) ... [2020-12-22 19:29:17,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (1/1) ... [2020-12-22 19:29:17,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:29:17,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:29:17,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:29:17,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:29:17,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:29:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:29:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:29:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:29:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 19:29:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:29:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 19:29:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:29:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:29:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:29:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:29:18,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:29:18,036 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 19:29:18,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:29:18 BoogieIcfgContainer [2020-12-22 19:29:18,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:29:18,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:29:18,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:29:18,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:29:18,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:29:16" (1/3) ... [2020-12-22 19:29:18,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cc61cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:29:18, skipping insertion in model container [2020-12-22 19:29:18,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:17" (2/3) ... [2020-12-22 19:29:18,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cc61cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:29:18, skipping insertion in model container [2020-12-22 19:29:18,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:29:18" (3/3) ... [2020-12-22 19:29:18,054 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_update_all.i [2020-12-22 19:29:18,068 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:29:18,074 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 40 error locations. [2020-12-22 19:29:18,095 INFO L253 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2020-12-22 19:29:18,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:29:18,137 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:29:18,137 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:29:18,138 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:29:18,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:29:18,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:29:18,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:29:18,138 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:29:18,168 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-12-22 19:29:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:29:18,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:18,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:29:18,189 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:18,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:18,197 INFO L82 PathProgramCache]: Analyzing trace with hash 925702, now seen corresponding path program 1 times [2020-12-22 19:29:18,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:18,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795786814] [2020-12-22 19:29:18,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:18,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795786814] [2020-12-22 19:29:18,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:18,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:29:18,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708787430] [2020-12-22 19:29:18,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:29:18,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:18,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:29:18,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:29:18,450 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 3 states. [2020-12-22 19:29:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:18,589 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-12-22 19:29:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:29:18,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:29:18,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:18,603 INFO L225 Difference]: With dead ends: 115 [2020-12-22 19:29:18,603 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 19:29:18,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:29:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 19:29:18,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 89. [2020-12-22 19:29:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:29:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2020-12-22 19:29:18,655 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 4 [2020-12-22 19:29:18,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:18,656 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2020-12-22 19:29:18,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:29:18,656 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2020-12-22 19:29:18,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:29:18,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:18,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:29:18,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:29:18,658 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:18,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:18,659 INFO L82 PathProgramCache]: Analyzing trace with hash 925703, now seen corresponding path program 1 times [2020-12-22 19:29:18,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:18,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125325619] [2020-12-22 19:29:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:18,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125325619] [2020-12-22 19:29:18,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:18,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:29:18,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442532612] [2020-12-22 19:29:18,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:29:18,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:18,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:29:18,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:29:18,726 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 3 states. [2020-12-22 19:29:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:18,807 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-12-22 19:29:18,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:29:18,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:29:18,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:18,809 INFO L225 Difference]: With dead ends: 83 [2020-12-22 19:29:18,810 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 19:29:18,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:29:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 19:29:18,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-22 19:29:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:29:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2020-12-22 19:29:18,820 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 4 [2020-12-22 19:29:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:18,821 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2020-12-22 19:29:18,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:29:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2020-12-22 19:29:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:29:18,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:18,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:18,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:29:18,823 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:18,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:18,824 INFO L82 PathProgramCache]: Analyzing trace with hash 613332465, now seen corresponding path program 1 times [2020-12-22 19:29:18,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:18,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311927708] [2020-12-22 19:29:18,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:18,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311927708] [2020-12-22 19:29:18,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:18,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:29:18,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356581230] [2020-12-22 19:29:18,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:29:18,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:18,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:29:18,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:29:18,972 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 3 states. [2020-12-22 19:29:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:18,997 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-12-22 19:29:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:29:18,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 19:29:18,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:18,999 INFO L225 Difference]: With dead ends: 98 [2020-12-22 19:29:19,000 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 19:29:19,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:29:19,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 19:29:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2020-12-22 19:29:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:29:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2020-12-22 19:29:19,011 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 10 [2020-12-22 19:29:19,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:19,012 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2020-12-22 19:29:19,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:29:19,012 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2020-12-22 19:29:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:29:19,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:19,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:19,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:29:19,014 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:19,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:19,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1103137848, now seen corresponding path program 1 times [2020-12-22 19:29:19,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:19,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397102125] [2020-12-22 19:29:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:19,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397102125] [2020-12-22 19:29:19,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:19,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:29:19,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270690386] [2020-12-22 19:29:19,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:29:19,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:19,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:29:19,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:19,107 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 5 states. [2020-12-22 19:29:19,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:19,272 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions. [2020-12-22 19:29:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:19,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 19:29:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:19,275 INFO L225 Difference]: With dead ends: 109 [2020-12-22 19:29:19,275 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 19:29:19,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:29:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 19:29:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 83. [2020-12-22 19:29:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:29:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2020-12-22 19:29:19,285 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 16 [2020-12-22 19:29:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:19,285 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2020-12-22 19:29:19,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:29:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2020-12-22 19:29:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:29:19,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:19,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:19,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:29:19,287 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:19,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:19,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1103137849, now seen corresponding path program 1 times [2020-12-22 19:29:19,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:19,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469554188] [2020-12-22 19:29:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:19,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469554188] [2020-12-22 19:29:19,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:19,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:29:19,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823459835] [2020-12-22 19:29:19,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:29:19,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:19,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:29:19,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:19,457 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 5 states. [2020-12-22 19:29:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:19,647 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-12-22 19:29:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:19,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 19:29:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:19,649 INFO L225 Difference]: With dead ends: 88 [2020-12-22 19:29:19,649 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:29:19,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:29:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:29:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-12-22 19:29:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:29:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2020-12-22 19:29:19,658 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 16 [2020-12-22 19:29:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:19,658 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2020-12-22 19:29:19,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:29:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2020-12-22 19:29:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:29:19,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:19,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:19,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:29:19,660 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:19,661 INFO L82 PathProgramCache]: Analyzing trace with hash -741449383, now seen corresponding path program 1 times [2020-12-22 19:29:19,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:19,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360016913] [2020-12-22 19:29:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:19,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360016913] [2020-12-22 19:29:19,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:19,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:29:19,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641686324] [2020-12-22 19:29:19,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:19,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:19,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:19,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:29:19,836 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand 6 states. [2020-12-22 19:29:20,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:20,055 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-12-22 19:29:20,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:20,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-22 19:29:20,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:20,057 INFO L225 Difference]: With dead ends: 113 [2020-12-22 19:29:20,057 INFO L226 Difference]: Without dead ends: 113 [2020-12-22 19:29:20,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:29:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-22 19:29:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 91. [2020-12-22 19:29:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 19:29:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-12-22 19:29:20,068 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 18 [2020-12-22 19:29:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:20,068 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-12-22 19:29:20,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-12-22 19:29:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:29:20,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:20,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:20,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:29:20,070 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:20,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:20,071 INFO L82 PathProgramCache]: Analyzing trace with hash -741449382, now seen corresponding path program 1 times [2020-12-22 19:29:20,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:20,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831528317] [2020-12-22 19:29:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:20,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831528317] [2020-12-22 19:29:20,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:20,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:29:20,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301098223] [2020-12-22 19:29:20,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:29:20,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:20,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:29:20,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:29:20,222 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 7 states. [2020-12-22 19:29:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:20,523 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2020-12-22 19:29:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:29:20,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 19:29:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:20,525 INFO L225 Difference]: With dead ends: 112 [2020-12-22 19:29:20,526 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 19:29:20,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:29:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 19:29:20,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 91. [2020-12-22 19:29:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 19:29:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2020-12-22 19:29:20,546 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 18 [2020-12-22 19:29:20,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:20,547 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2020-12-22 19:29:20,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:29:20,548 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2020-12-22 19:29:20,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:29:20,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:20,550 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 19:29:20,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:29:20,551 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:20,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:20,555 INFO L82 PathProgramCache]: Analyzing trace with hash 431868768, now seen corresponding path program 1 times [2020-12-22 19:29:20,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:20,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614824066] [2020-12-22 19:29:20,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:20,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614824066] [2020-12-22 19:29:20,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:20,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:29:20,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476627410] [2020-12-22 19:29:20,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:20,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:20,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:20,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:29:20,691 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 6 states. [2020-12-22 19:29:20,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:20,834 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-12-22 19:29:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:20,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-12-22 19:29:20,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:20,836 INFO L225 Difference]: With dead ends: 92 [2020-12-22 19:29:20,836 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 19:29:20,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:29:20,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 19:29:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-12-22 19:29:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 19:29:20,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2020-12-22 19:29:20,843 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 20 [2020-12-22 19:29:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:20,844 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2020-12-22 19:29:20,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:20,844 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2020-12-22 19:29:20,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:29:20,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:20,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:20,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:29:20,845 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:20,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:20,846 INFO L82 PathProgramCache]: Analyzing trace with hash 498265101, now seen corresponding path program 1 times [2020-12-22 19:29:20,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:20,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379008309] [2020-12-22 19:29:20,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:20,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379008309] [2020-12-22 19:29:20,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596922483] [2020-12-22 19:29:20,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:21,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:29:21,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:21,148 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:29:21,149 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:21,152 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:21,153 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:21,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:29:21,242 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:21,243 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:29:21,248 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:21,275 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-22 19:29:21,278 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:21,279 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-12-22 19:29:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:21,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:21,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-22 19:29:21,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583026745] [2020-12-22 19:29:21,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:29:21,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:21,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:29:21,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:29:21,357 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 8 states. [2020-12-22 19:29:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:21,663 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-12-22 19:29:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:29:21,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-22 19:29:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:21,665 INFO L225 Difference]: With dead ends: 112 [2020-12-22 19:29:21,665 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 19:29:21,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:29:21,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 19:29:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2020-12-22 19:29:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 19:29:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2020-12-22 19:29:21,688 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 21 [2020-12-22 19:29:21,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:21,689 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2020-12-22 19:29:21,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:29:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2020-12-22 19:29:21,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:29:21,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:21,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:21,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 19:29:21,904 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:21,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:21,905 INFO L82 PathProgramCache]: Analyzing trace with hash 498265102, now seen corresponding path program 1 times [2020-12-22 19:29:21,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:21,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487443724] [2020-12-22 19:29:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:22,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487443724] [2020-12-22 19:29:22,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990677599] [2020-12-22 19:29:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:22,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 19:29:22,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:22,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:22,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-12-22 19:29:22,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024198121] [2020-12-22 19:29:22,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:29:22,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:22,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:29:22,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:29:22,240 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 10 states. [2020-12-22 19:29:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:22,563 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2020-12-22 19:29:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:29:22,563 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-12-22 19:29:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:22,565 INFO L225 Difference]: With dead ends: 150 [2020-12-22 19:29:22,565 INFO L226 Difference]: Without dead ends: 150 [2020-12-22 19:29:22,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:29:22,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-22 19:29:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 93. [2020-12-22 19:29:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:29:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-12-22 19:29:22,570 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 21 [2020-12-22 19:29:22,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:22,570 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-12-22 19:29:22,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:29:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-12-22 19:29:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:29:22,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:22,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:22,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 19:29:22,787 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:22,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1733651014, now seen corresponding path program 1 times [2020-12-22 19:29:22,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:22,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545730159] [2020-12-22 19:29:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:22,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545730159] [2020-12-22 19:29:22,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:22,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:29:22,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082848509] [2020-12-22 19:29:22,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:22,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:22,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:22,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:29:22,903 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 6 states. [2020-12-22 19:29:23,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:23,091 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-12-22 19:29:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:29:23,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 19:29:23,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:23,093 INFO L225 Difference]: With dead ends: 111 [2020-12-22 19:29:23,093 INFO L226 Difference]: Without dead ends: 111 [2020-12-22 19:29:23,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:29:23,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-22 19:29:23,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2020-12-22 19:29:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 19:29:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2020-12-22 19:29:23,097 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 22 [2020-12-22 19:29:23,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:23,097 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2020-12-22 19:29:23,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:23,097 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2020-12-22 19:29:23,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:29:23,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:23,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:23,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:29:23,098 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:23,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:23,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1733651013, now seen corresponding path program 1 times [2020-12-22 19:29:23,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:23,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613960510] [2020-12-22 19:29:23,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:23,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:23,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613960510] [2020-12-22 19:29:23,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:23,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:29:23,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910250275] [2020-12-22 19:29:23,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:23,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:23,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:23,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:29:23,185 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 6 states. [2020-12-22 19:29:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:23,387 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2020-12-22 19:29:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:29:23,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 19:29:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:23,388 INFO L225 Difference]: With dead ends: 89 [2020-12-22 19:29:23,388 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 19:29:23,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:29:23,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 19:29:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-22 19:29:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:29:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-12-22 19:29:23,392 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 22 [2020-12-22 19:29:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:23,393 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-12-22 19:29:23,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-12-22 19:29:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:29:23,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:23,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:23,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:29:23,395 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:23,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:23,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1015769950, now seen corresponding path program 1 times [2020-12-22 19:29:23,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:23,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584268558] [2020-12-22 19:29:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:23,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584268558] [2020-12-22 19:29:23,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:23,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:29:23,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640669623] [2020-12-22 19:29:23,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:29:23,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:23,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:29:23,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:29:23,483 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 9 states. [2020-12-22 19:29:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:23,879 INFO L93 Difference]: Finished difference Result 157 states and 170 transitions. [2020-12-22 19:29:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:29:23,880 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-22 19:29:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:23,881 INFO L225 Difference]: With dead ends: 157 [2020-12-22 19:29:23,881 INFO L226 Difference]: Without dead ends: 157 [2020-12-22 19:29:23,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:29:23,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-22 19:29:23,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 92. [2020-12-22 19:29:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 19:29:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-12-22 19:29:23,890 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 27 [2020-12-22 19:29:23,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:23,891 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-12-22 19:29:23,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:29:23,891 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-12-22 19:29:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:29:23,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:23,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:23,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:29:23,896 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:23,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1015769949, now seen corresponding path program 1 times [2020-12-22 19:29:23,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:23,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998641599] [2020-12-22 19:29:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:24,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998641599] [2020-12-22 19:29:24,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:24,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:29:24,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950592886] [2020-12-22 19:29:24,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:29:24,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:24,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:29:24,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:29:24,023 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 9 states. [2020-12-22 19:29:24,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:24,485 INFO L93 Difference]: Finished difference Result 137 states and 150 transitions. [2020-12-22 19:29:24,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:29:24,486 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-22 19:29:24,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:24,487 INFO L225 Difference]: With dead ends: 137 [2020-12-22 19:29:24,487 INFO L226 Difference]: Without dead ends: 137 [2020-12-22 19:29:24,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:29:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-22 19:29:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 92. [2020-12-22 19:29:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 19:29:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-12-22 19:29:24,491 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 27 [2020-12-22 19:29:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:24,491 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-12-22 19:29:24,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:29:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-12-22 19:29:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:29:24,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:24,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:24,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:29:24,493 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:24,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1198607448, now seen corresponding path program 1 times [2020-12-22 19:29:24,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:24,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472313883] [2020-12-22 19:29:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:24,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472313883] [2020-12-22 19:29:24,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:24,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:29:24,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454000324] [2020-12-22 19:29:24,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:29:24,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:24,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:29:24,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:29:24,553 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 4 states. [2020-12-22 19:29:24,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:24,576 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2020-12-22 19:29:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:29:24,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-12-22 19:29:24,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:24,578 INFO L225 Difference]: With dead ends: 120 [2020-12-22 19:29:24,578 INFO L226 Difference]: Without dead ends: 120 [2020-12-22 19:29:24,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:29:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-22 19:29:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 94. [2020-12-22 19:29:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-22 19:29:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2020-12-22 19:29:24,582 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 29 [2020-12-22 19:29:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:24,582 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2020-12-22 19:29:24,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:29:24,583 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2020-12-22 19:29:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:29:24,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:24,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:24,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:29:24,584 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:24,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:24,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1538690034, now seen corresponding path program 1 times [2020-12-22 19:29:24,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:24,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527294397] [2020-12-22 19:29:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:24,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527294397] [2020-12-22 19:29:24,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:24,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:29:24,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587614154] [2020-12-22 19:29:24,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:29:24,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:24,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:29:24,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:29:24,637 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand 4 states. [2020-12-22 19:29:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:24,677 INFO L93 Difference]: Finished difference Result 169 states and 184 transitions. [2020-12-22 19:29:24,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:29:24,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-22 19:29:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:24,679 INFO L225 Difference]: With dead ends: 169 [2020-12-22 19:29:24,679 INFO L226 Difference]: Without dead ends: 169 [2020-12-22 19:29:24,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-22 19:29:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 95. [2020-12-22 19:29:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 19:29:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2020-12-22 19:29:24,684 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 30 [2020-12-22 19:29:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:24,684 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2020-12-22 19:29:24,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:29:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2020-12-22 19:29:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:29:24,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:24,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:24,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:29:24,685 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2090471037, now seen corresponding path program 1 times [2020-12-22 19:29:24,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:24,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607742188] [2020-12-22 19:29:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:24,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607742188] [2020-12-22 19:29:24,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552592224] [2020-12-22 19:29:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:24,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:29:24,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:24,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:29:24,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-12-22 19:29:24,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657919825] [2020-12-22 19:29:24,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:29:24,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:24,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:29:24,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:24,905 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 4 states. [2020-12-22 19:29:24,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:24,915 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-12-22 19:29:24,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:29:24,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 19:29:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:24,916 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:29:24,916 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 19:29:24,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 19:29:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-12-22 19:29:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:29:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-12-22 19:29:24,920 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 31 [2020-12-22 19:29:24,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:24,920 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-12-22 19:29:24,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:29:24,920 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-12-22 19:29:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 19:29:24,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:24,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:25,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 19:29:25,136 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:25,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1905462204, now seen corresponding path program 1 times [2020-12-22 19:29:25,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:25,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287082182] [2020-12-22 19:29:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:25,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287082182] [2020-12-22 19:29:25,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:25,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:29:25,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262383516] [2020-12-22 19:29:25,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:29:25,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:25,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:29:25,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:29:25,280 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 9 states. [2020-12-22 19:29:25,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:25,562 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2020-12-22 19:29:25,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:29:25,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-22 19:29:25,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:25,563 INFO L225 Difference]: With dead ends: 107 [2020-12-22 19:29:25,563 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 19:29:25,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:29:25,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 19:29:25,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 85. [2020-12-22 19:29:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-22 19:29:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-12-22 19:29:25,566 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 33 [2020-12-22 19:29:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:25,567 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-12-22 19:29:25,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:29:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-12-22 19:29:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 19:29:25,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:25,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:25,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:29:25,568 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:25,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1905462205, now seen corresponding path program 1 times [2020-12-22 19:29:25,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:25,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283270020] [2020-12-22 19:29:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:25,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283270020] [2020-12-22 19:29:25,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099016914] [2020-12-22 19:29:25,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:25,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:29:25,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:25,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:25,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 19:29:25,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865495021] [2020-12-22 19:29:25,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:29:25,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:25,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:29:25,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:29:25,794 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 8 states. [2020-12-22 19:29:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:25,826 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2020-12-22 19:29:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:29:25,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 19:29:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:25,827 INFO L225 Difference]: With dead ends: 106 [2020-12-22 19:29:25,827 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 19:29:25,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:29:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 19:29:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2020-12-22 19:29:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:29:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2020-12-22 19:29:25,831 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 33 [2020-12-22 19:29:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:25,831 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2020-12-22 19:29:25,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:29:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2020-12-22 19:29:25,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:29:25,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:25,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:26,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:26,046 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:26,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:26,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1019398562, now seen corresponding path program 1 times [2020-12-22 19:29:26,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:26,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839473438] [2020-12-22 19:29:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:26,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839473438] [2020-12-22 19:29:26,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948573306] [2020-12-22 19:29:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:26,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-22 19:29:26,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:26,572 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:29:26,573 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:26,576 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:26,577 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:26,577 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:29:26,686 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:26,687 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:29:26,689 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:26,710 INFO L625 ElimStorePlain]: treesize reduction 14, result has 62.2 percent of original size [2020-12-22 19:29:26,711 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:26,711 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2020-12-22 19:29:26,898 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 19:29:26,898 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:26,911 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:26,912 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:26,913 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-22 19:29:27,006 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:27,007 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 21 treesize of output 48 [2020-12-22 19:29:27,010 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:27,041 INFO L625 ElimStorePlain]: treesize reduction 28, result has 56.3 percent of original size [2020-12-22 19:29:27,042 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:27,043 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2020-12-22 19:29:27,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:27,211 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:27,222 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:27,229 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 46 [2020-12-22 19:29:27,233 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:27,270 INFO L625 ElimStorePlain]: treesize reduction 16, result has 74.2 percent of original size [2020-12-22 19:29:27,279 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:27,279 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:46 [2020-12-22 19:29:27,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:27,404 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:27,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:27,408 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:27,421 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:27,422 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 73 [2020-12-22 19:29:27,435 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:27,477 INFO L625 ElimStorePlain]: treesize reduction 42, result has 62.5 percent of original size [2020-12-22 19:29:27,482 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:27,483 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:70 [2020-12-22 19:29:27,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:27,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:27,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:27,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:27,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:27,947 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:27,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:27,949 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:27,957 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:27,958 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 66 [2020-12-22 19:29:27,964 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:28,007 INFO L625 ElimStorePlain]: treesize reduction 32, result has 69.5 percent of original size [2020-12-22 19:29:28,016 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:28,017 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:92, output treesize:70 [2020-12-22 19:29:28,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:28,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:28,196 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:28,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:28,198 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:28,206 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:28,206 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 60 treesize of output 37 [2020-12-22 19:29:28,208 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:28,218 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:28,221 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:28,221 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:11 [2020-12-22 19:29:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:28,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:28,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2020-12-22 19:29:28,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634045059] [2020-12-22 19:29:28,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-22 19:29:28,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:28,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-22 19:29:28,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1148, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 19:29:28,265 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand 36 states. [2020-12-22 19:29:29,406 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-12-22 19:29:29,647 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-12-22 19:29:29,967 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2020-12-22 19:29:30,351 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 99 [2020-12-22 19:29:30,814 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 102 [2020-12-22 19:29:31,177 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-12-22 19:29:31,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:31,836 INFO L93 Difference]: Finished difference Result 217 states and 254 transitions. [2020-12-22 19:29:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 19:29:31,837 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 34 [2020-12-22 19:29:31,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:31,840 INFO L225 Difference]: With dead ends: 217 [2020-12-22 19:29:31,840 INFO L226 Difference]: Without dead ends: 217 [2020-12-22 19:29:31,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=422, Invalid=2334, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 19:29:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-12-22 19:29:31,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 109. [2020-12-22 19:29:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 19:29:31,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2020-12-22 19:29:31,851 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 34 [2020-12-22 19:29:31,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:31,851 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2020-12-22 19:29:31,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-22 19:29:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2020-12-22 19:29:31,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:29:31,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:31,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:32,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:32,068 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:32,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1019398561, now seen corresponding path program 1 times [2020-12-22 19:29:32,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:32,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556014065] [2020-12-22 19:29:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:32,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556014065] [2020-12-22 19:29:32,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352496085] [2020-12-22 19:29:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:32,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 72 conjunts are in the unsatisfiable core [2020-12-22 19:29:32,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:32,728 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:29:32,728 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:32,731 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:32,732 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:32,732 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:29:32,992 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:32,993 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:29:32,995 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:29:32,999 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,011 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,016 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 19:29:33,018 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,029 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,030 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,031 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:24 [2020-12-22 19:29:33,209 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 19:29:33,209 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,233 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 19:29:33,236 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,250 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,251 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,251 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:38 [2020-12-22 19:29:33,334 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2020-12-22 19:29:33,335 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,351 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,356 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2020-12-22 19:29:33,358 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,373 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,374 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,374 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:70, output treesize:62 [2020-12-22 19:29:33,550 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,551 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 61 [2020-12-22 19:29:33,556 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:33,595 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2020-12-22 19:29:33,597 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,620 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,622 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,622 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:87, output treesize:79 [2020-12-22 19:29:33,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:33,734 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,735 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 77 [2020-12-22 19:29:33,737 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,766 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:33,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:33,830 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,830 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 179 [2020-12-22 19:29:33,835 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:33,865 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:33,868 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 19:29:33,868 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:126, output treesize:145 [2020-12-22 19:29:34,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:34,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:34,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:34,377 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:34,377 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 102 [2020-12-22 19:29:34,380 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:34,419 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:34,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:34,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:34,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:34,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:34,543 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 19:29:34,544 INFO L348 Elim1Store]: treesize reduction 72, result has 65.2 percent of original size [2020-12-22 19:29:34,544 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 130 treesize of output 198 [2020-12-22 19:29:34,551 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:34,580 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:34,582 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 19:29:34,582 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:186, output treesize:133 [2020-12-22 19:29:34,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:34,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:34,843 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:34,844 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 118 treesize of output 127 [2020-12-22 19:29:34,847 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:34,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:34,879 INFO L348 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2020-12-22 19:29:34,880 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 35 [2020-12-22 19:29:34,882 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:34,892 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:34,894 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 19:29:34,894 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:159, output treesize:21 [2020-12-22 19:29:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:35,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:35,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2020-12-22 19:29:35,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746902674] [2020-12-22 19:29:35,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-22 19:29:35,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:35,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-22 19:29:35,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1393, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 19:29:35,097 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand 39 states. [2020-12-22 19:29:36,284 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-12-22 19:29:36,624 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-12-22 19:29:36,840 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2020-12-22 19:29:37,099 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2020-12-22 19:29:37,479 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2020-12-22 19:29:38,030 WARN L197 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 108 [2020-12-22 19:29:38,768 WARN L197 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 139 [2020-12-22 19:29:39,748 WARN L197 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 152 [2020-12-22 19:29:40,762 WARN L197 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 155 [2020-12-22 19:29:41,668 WARN L197 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 145 [2020-12-22 19:29:43,332 WARN L197 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 141 [2020-12-22 19:29:44,225 WARN L197 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 134 [2020-12-22 19:29:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:44,387 INFO L93 Difference]: Finished difference Result 307 states and 363 transitions. [2020-12-22 19:29:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 19:29:44,388 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 34 [2020-12-22 19:29:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:44,389 INFO L225 Difference]: With dead ends: 307 [2020-12-22 19:29:44,390 INFO L226 Difference]: Without dead ends: 307 [2020-12-22 19:29:44,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=461, Invalid=2619, Unknown=0, NotChecked=0, Total=3080 [2020-12-22 19:29:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-12-22 19:29:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 116. [2020-12-22 19:29:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 19:29:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2020-12-22 19:29:44,397 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 34 [2020-12-22 19:29:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:44,397 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2020-12-22 19:29:44,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-22 19:29:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2020-12-22 19:29:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 19:29:44,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:44,398 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:44,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:44,612 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash -507168303, now seen corresponding path program 2 times [2020-12-22 19:29:44,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:44,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182146553] [2020-12-22 19:29:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:44,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182146553] [2020-12-22 19:29:44,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842025423] [2020-12-22 19:29:44,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:44,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:29:44,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:29:44,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:29:44,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:44,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:44,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 19:29:44,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098091044] [2020-12-22 19:29:44,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:44,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:44,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:44,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:29:44,843 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand 6 states. [2020-12-22 19:29:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:44,888 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2020-12-22 19:29:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:29:44,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-12-22 19:29:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:44,890 INFO L225 Difference]: With dead ends: 118 [2020-12-22 19:29:44,890 INFO L226 Difference]: Without dead ends: 118 [2020-12-22 19:29:44,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:29:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-22 19:29:44,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2020-12-22 19:29:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-22 19:29:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2020-12-22 19:29:44,894 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 37 [2020-12-22 19:29:44,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:44,894 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2020-12-22 19:29:44,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:44,894 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2020-12-22 19:29:44,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 19:29:44,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:44,895 INFO L422 BasicCegarLoop]: trace histogram [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 19:29:45,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:45,109 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:45,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:45,110 INFO L82 PathProgramCache]: Analyzing trace with hash 812892342, now seen corresponding path program 2 times [2020-12-22 19:29:45,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:45,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143988877] [2020-12-22 19:29:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:45,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143988877] [2020-12-22 19:29:45,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706633340] [2020-12-22 19:29:45,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:45,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:29:45,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:29:45,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:29:45,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:29:45,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:45,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-12-22 19:29:45,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54172418] [2020-12-22 19:29:45,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:29:45,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:45,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:29:45,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:29:45,332 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand 7 states. [2020-12-22 19:29:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:45,411 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2020-12-22 19:29:45,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:29:45,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-22 19:29:45,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:45,412 INFO L225 Difference]: With dead ends: 106 [2020-12-22 19:29:45,412 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 19:29:45,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:29:45,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 19:29:45,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2020-12-22 19:29:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:29:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2020-12-22 19:29:45,415 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 37 [2020-12-22 19:29:45,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:45,415 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2020-12-22 19:29:45,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:29:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2020-12-22 19:29:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:29:45,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:45,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:45,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 19:29:45,630 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:45,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:45,631 INFO L82 PathProgramCache]: Analyzing trace with hash 531787897, now seen corresponding path program 1 times [2020-12-22 19:29:45,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:45,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138842570] [2020-12-22 19:29:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:29:45,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138842570] [2020-12-22 19:29:45,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:45,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:29:45,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496153560] [2020-12-22 19:29:45,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:29:45,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:45,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:29:45,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:29:45,755 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand 9 states. [2020-12-22 19:29:46,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:46,067 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2020-12-22 19:29:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:29:46,068 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-12-22 19:29:46,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:46,069 INFO L225 Difference]: With dead ends: 140 [2020-12-22 19:29:46,069 INFO L226 Difference]: Without dead ends: 140 [2020-12-22 19:29:46,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:29:46,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-22 19:29:46,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 100. [2020-12-22 19:29:46,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:29:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-12-22 19:29:46,073 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 40 [2020-12-22 19:29:46,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:46,074 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-12-22 19:29:46,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:29:46,074 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-12-22 19:29:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 19:29:46,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:46,074 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 19:29:46,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 19:29:46,075 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:46,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:46,075 INFO L82 PathProgramCache]: Analyzing trace with hash -653629150, now seen corresponding path program 3 times [2020-12-22 19:29:46,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:46,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763239742] [2020-12-22 19:29:46,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:29:46,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763239742] [2020-12-22 19:29:46,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854023347] [2020-12-22 19:29:46,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:47,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 19:29:47,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:29:47,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:29:47,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:29:47,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:29:47,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2020-12-22 19:29:47,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429968258] [2020-12-22 19:29:47,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:47,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:47,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:47,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:29:47,150 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 6 states. [2020-12-22 19:29:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:47,175 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2020-12-22 19:29:47,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:47,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-12-22 19:29:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:47,176 INFO L225 Difference]: With dead ends: 100 [2020-12-22 19:29:47,177 INFO L226 Difference]: Without dead ends: 100 [2020-12-22 19:29:47,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:29:47,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-22 19:29:47,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2020-12-22 19:29:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-22 19:29:47,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2020-12-22 19:29:47,180 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 41 [2020-12-22 19:29:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:47,180 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2020-12-22 19:29:47,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:47,180 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2020-12-22 19:29:47,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 19:29:47,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:47,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:47,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:47,397 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:47,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1639408578, now seen corresponding path program 1 times [2020-12-22 19:29:47,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:47,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572712159] [2020-12-22 19:29:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:29:47,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572712159] [2020-12-22 19:29:47,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:47,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:29:47,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256527407] [2020-12-22 19:29:47,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:29:47,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:47,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:29:47,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:29:47,444 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand 4 states. [2020-12-22 19:29:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:47,467 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2020-12-22 19:29:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:29:47,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-12-22 19:29:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:47,468 INFO L225 Difference]: With dead ends: 91 [2020-12-22 19:29:47,468 INFO L226 Difference]: Without dead ends: 91 [2020-12-22 19:29:47,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-22 19:29:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-12-22 19:29:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:29:47,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-12-22 19:29:47,471 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 43 [2020-12-22 19:29:47,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:47,471 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-12-22 19:29:47,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:29:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-12-22 19:29:47,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 19:29:47,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:47,472 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:47,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 19:29:47,472 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:47,473 INFO L82 PathProgramCache]: Analyzing trace with hash 667371338, now seen corresponding path program 1 times [2020-12-22 19:29:47,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:47,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907532391] [2020-12-22 19:29:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:48,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907532391] [2020-12-22 19:29:48,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138422857] [2020-12-22 19:29:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:48,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-22 19:29:48,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:48,520 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:48,526 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:29:48,531 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:29:48,533 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:29:48,535 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:48,539 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:48,540 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:48,540 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2020-12-22 19:29:48,692 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 19:29:48,693 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:48,698 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:48,699 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:48,699 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-12-22 19:29:48,767 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:29:48,768 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:48,775 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:48,776 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:48,777 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2020-12-22 19:29:48,930 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:48,931 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 52 [2020-12-22 19:29:48,937 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:48,962 INFO L625 ElimStorePlain]: treesize reduction 22, result has 58.5 percent of original size [2020-12-22 19:29:48,964 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:48,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:31 [2020-12-22 19:29:49,086 INFO L348 Elim1Store]: treesize reduction 34, result has 60.0 percent of original size [2020-12-22 19:29:49,087 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 70 [2020-12-22 19:29:49,099 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:49,107 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:49,108 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:49,109 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:38 [2020-12-22 19:29:49,499 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_25|], 12=[|v_#memory_$Pointer$.base_41|]} [2020-12-22 19:29:49,504 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 19:29:49,504 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:49,517 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:49,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:49,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:49,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:49,571 INFO L348 Elim1Store]: treesize reduction 28, result has 65.0 percent of original size [2020-12-22 19:29:49,571 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 81 [2020-12-22 19:29:49,574 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:49,584 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:49,585 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:49,586 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:51 [2020-12-22 19:29:49,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:49,817 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:49,817 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 47 [2020-12-22 19:29:49,821 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:49,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:49,826 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:49,826 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:58, output treesize:17 [2020-12-22 19:29:49,987 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 19:29:49,992 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:49,999 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:50,001 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:50,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:30, output treesize:13 [2020-12-22 19:29:50,211 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 19 treesize of output 7 [2020-12-22 19:29:50,212 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:50,216 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:50,217 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:50,217 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-12-22 19:29:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:50,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:50,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 51 [2020-12-22 19:29:50,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114112219] [2020-12-22 19:29:50,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-12-22 19:29:50,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:50,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-12-22 19:29:50,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2407, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 19:29:50,378 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 51 states. [2020-12-22 19:29:52,232 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-12-22 19:29:52,466 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2020-12-22 19:29:52,742 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 79 [2020-12-22 19:29:52,993 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 74 [2020-12-22 19:29:53,224 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-12-22 19:29:53,451 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-12-22 19:29:53,658 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-12-22 19:29:53,886 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-12-22 19:29:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:55,615 INFO L93 Difference]: Finished difference Result 109 states and 112 transitions. [2020-12-22 19:29:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 19:29:55,616 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 44 [2020-12-22 19:29:55,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:55,619 INFO L225 Difference]: With dead ends: 109 [2020-12-22 19:29:55,620 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 19:29:55,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=680, Invalid=5326, Unknown=0, NotChecked=0, Total=6006 [2020-12-22 19:29:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 19:29:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 89. [2020-12-22 19:29:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:29:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2020-12-22 19:29:55,625 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 44 [2020-12-22 19:29:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:55,625 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2020-12-22 19:29:55,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-12-22 19:29:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2020-12-22 19:29:55,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 19:29:55,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:55,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:55,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 19:29:55,842 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:29:55,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:55,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1809576850, now seen corresponding path program 1 times [2020-12-22 19:29:55,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:55,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700014963] [2020-12-22 19:29:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:56,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700014963] [2020-12-22 19:29:56,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16793156] [2020-12-22 19:29:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:56,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-22 19:29:56,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:56,520 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:29:56,521 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:56,524 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:56,525 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:56,525 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:29:56,563 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:56,564 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-22 19:29:56,572 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:29:56,575 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:56,582 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:56,583 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:56,583 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:18 [2020-12-22 19:29:56,708 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 19:29:56,709 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:56,717 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:56,718 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:56,718 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-22 19:29:56,792 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:56,792 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 51 [2020-12-22 19:29:56,795 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:56,820 INFO L625 ElimStorePlain]: treesize reduction 28, result has 52.5 percent of original size [2020-12-22 19:29:56,822 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:56,822 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:31 [2020-12-22 19:29:56,993 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:56,993 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 102 [2020-12-22 19:29:56,997 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:57,026 INFO L625 ElimStorePlain]: treesize reduction 22, result has 63.3 percent of original size [2020-12-22 19:29:57,027 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:57,028 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:60, output treesize:38 [2020-12-22 19:29:57,141 INFO L348 Elim1Store]: treesize reduction 42, result has 54.8 percent of original size [2020-12-22 19:29:57,142 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 78 [2020-12-22 19:29:57,145 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:57,158 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:57,160 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:57,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:62, output treesize:55 [2020-12-22 19:29:57,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:57,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:57,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:57,554 INFO L348 Elim1Store]: treesize reduction 28, result has 65.0 percent of original size [2020-12-22 19:29:57,554 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 86 [2020-12-22 19:29:57,562 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:57,573 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:57,575 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:57,575 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:77, output treesize:55 [2020-12-22 19:29:58,049 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-22 19:29:58,050 INFO L348 Elim1Store]: treesize reduction 10, result has 94.4 percent of original size [2020-12-22 19:29:58,051 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 206 [2020-12-22 19:29:58,057 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-22 19:29:58,058 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:29:58,059 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:58,093 INFO L625 ElimStorePlain]: treesize reduction 30, result has 64.7 percent of original size [2020-12-22 19:29:58,096 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:58,096 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:86, output treesize:36 [2020-12-22 19:29:58,255 INFO L348 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-12-22 19:29:58,255 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 16 [2020-12-22 19:29:58,257 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:58,262 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:58,264 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:29:58,264 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:15 [2020-12-22 19:29:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:29:58,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:58,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 40 [2020-12-22 19:29:58,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912478920] [2020-12-22 19:29:58,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-12-22 19:29:58,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:58,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-12-22 19:29:58,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1510, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 19:29:58,426 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand 41 states. [2020-12-22 19:29:59,737 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-12-22 19:29:59,955 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 81 [2020-12-22 19:30:00,194 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2020-12-22 19:30:00,397 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-12-22 19:30:00,598 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-22 19:30:00,766 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-12-22 19:30:01,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:01,520 INFO L93 Difference]: Finished difference Result 148 states and 153 transitions. [2020-12-22 19:30:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 19:30:01,520 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 50 [2020-12-22 19:30:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:01,522 INFO L225 Difference]: With dead ends: 148 [2020-12-22 19:30:01,522 INFO L226 Difference]: Without dead ends: 148 [2020-12-22 19:30:01,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=427, Invalid=3233, Unknown=0, NotChecked=0, Total=3660 [2020-12-22 19:30:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-22 19:30:01,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 93. [2020-12-22 19:30:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:30:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2020-12-22 19:30:01,527 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 50 [2020-12-22 19:30:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:01,527 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2020-12-22 19:30:01,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-12-22 19:30:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2020-12-22 19:30:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 19:30:01,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:01,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:30:01,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 19:30:01,735 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:01,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1809576851, now seen corresponding path program 1 times [2020-12-22 19:30:01,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:01,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657289275] [2020-12-22 19:30:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:02,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:30:02,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657289275] [2020-12-22 19:30:02,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107392809] [2020-12-22 19:30:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:02,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 78 conjunts are in the unsatisfiable core [2020-12-22 19:30:02,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:30:02,705 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:30:02,706 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:02,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:02,708 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:02,708 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:30:02,822 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:02,823 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:30:02,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:02,827 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:02,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:02,832 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:02,832 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2020-12-22 19:30:02,956 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 19:30:02,957 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:02,961 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:02,962 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:02,962 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-12-22 19:30:03,019 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:30:03,020 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:03,027 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:03,028 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:03,029 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-22 19:30:03,203 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:03,204 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 97 [2020-12-22 19:30:03,209 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:03,231 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-22 19:30:03,232 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:03,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:28 [2020-12-22 19:30:03,340 INFO L348 Elim1Store]: treesize reduction 42, result has 54.8 percent of original size [2020-12-22 19:30:03,340 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 73 [2020-12-22 19:30:03,343 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:03,351 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:03,353 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:03,353 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:39 [2020-12-22 19:30:03,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:03,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:03,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:03,757 INFO L348 Elim1Store]: treesize reduction 28, result has 65.0 percent of original size [2020-12-22 19:30:03,758 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 81 [2020-12-22 19:30:03,761 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:03,769 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:03,771 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:03,772 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:61, output treesize:39 [2020-12-22 19:30:04,091 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_32|], 12=[|v_#memory_$Pointer$.base_53|]} [2020-12-22 19:30:04,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:04,097 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 81 [2020-12-22 19:30:04,099 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:04,114 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:04,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:04,205 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:04,205 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 93 treesize of output 256 [2020-12-22 19:30:04,211 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-22 19:30:04,212 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:30:04,214 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:04,245 INFO L625 ElimStorePlain]: treesize reduction 38, result has 64.5 percent of original size [2020-12-22 19:30:04,247 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 19:30:04,248 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:141, output treesize:46 [2020-12-22 19:30:04,424 INFO L443 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.offset|], 2=[|#memory_$Pointer$.base|]} [2020-12-22 19:30:04,426 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 32 treesize of output 20 [2020-12-22 19:30:04,428 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:04,438 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:04,442 INFO L348 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-12-22 19:30:04,443 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 18 [2020-12-22 19:30:04,444 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:04,450 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:04,452 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 19:30:04,452 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:60, output treesize:13 [2020-12-22 19:30:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:30:04,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:30:04,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 43 [2020-12-22 19:30:04,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070008690] [2020-12-22 19:30:04,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-22 19:30:04,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:04,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-22 19:30:04,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1779, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 19:30:04,613 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand 44 states. [2020-12-22 19:30:05,822 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-22 19:30:06,432 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-12-22 19:30:06,694 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2020-12-22 19:30:07,046 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 106 [2020-12-22 19:30:07,465 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 112 [2020-12-22 19:30:07,825 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2020-12-22 19:30:08,197 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 99 [2020-12-22 19:30:08,490 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-12-22 19:30:08,777 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-12-22 19:30:09,087 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-12-22 19:30:09,407 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-12-22 19:30:09,752 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2020-12-22 19:30:10,030 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-12-22 19:30:10,396 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-12-22 19:30:11,107 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2020-12-22 19:30:11,548 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-12-22 19:30:11,878 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-12-22 19:30:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:11,928 INFO L93 Difference]: Finished difference Result 220 states and 226 transitions. [2020-12-22 19:30:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 19:30:11,929 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 50 [2020-12-22 19:30:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:11,930 INFO L225 Difference]: With dead ends: 220 [2020-12-22 19:30:11,930 INFO L226 Difference]: Without dead ends: 220 [2020-12-22 19:30:11,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=568, Invalid=4124, Unknown=0, NotChecked=0, Total=4692 [2020-12-22 19:30:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-12-22 19:30:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 92. [2020-12-22 19:30:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 19:30:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-12-22 19:30:11,935 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 50 [2020-12-22 19:30:11,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:11,936 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-12-22 19:30:11,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-22 19:30:11,936 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-12-22 19:30:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 19:30:11,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:11,937 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:30:12,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 19:30:12,149 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:12,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:12,150 INFO L82 PathProgramCache]: Analyzing trace with hash 211737206, now seen corresponding path program 1 times [2020-12-22 19:30:12,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:12,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430851301] [2020-12-22 19:30:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:30:12,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430851301] [2020-12-22 19:30:12,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715629519] [2020-12-22 19:30:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:12,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:30:12,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:30:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:30:12,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:30:12,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 19:30:12,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94999371] [2020-12-22 19:30:12,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:30:12,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:12,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:30:12,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:30:12,349 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 6 states. [2020-12-22 19:30:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:12,394 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2020-12-22 19:30:12,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:30:12,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 19:30:12,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:12,396 INFO L225 Difference]: With dead ends: 92 [2020-12-22 19:30:12,396 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 19:30:12,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:30:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 19:30:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-22 19:30:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 19:30:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-12-22 19:30:12,399 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 51 [2020-12-22 19:30:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:12,400 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-12-22 19:30:12,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:30:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-12-22 19:30:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 19:30:12,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:12,401 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:30:12,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:12,616 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:12,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1323824412, now seen corresponding path program 2 times [2020-12-22 19:30:12,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:12,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446935960] [2020-12-22 19:30:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:30:12,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446935960] [2020-12-22 19:30:12,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066799675] [2020-12-22 19:30:12,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:12,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:30:12,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:30:12,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:30:12,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:30:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 19:30:12,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:30:12,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-12-22 19:30:12,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787467402] [2020-12-22 19:30:12,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:30:12,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:30:12,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:30:12,845 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 7 states. [2020-12-22 19:30:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:12,930 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-12-22 19:30:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:30:12,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-12-22 19:30:12,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:12,933 INFO L225 Difference]: With dead ends: 83 [2020-12-22 19:30:12,933 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 19:30:12,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:30:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 19:30:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-22 19:30:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:30:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-12-22 19:30:12,936 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 53 [2020-12-22 19:30:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:12,937 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-12-22 19:30:12,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:30:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-12-22 19:30:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 19:30:12,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:12,938 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:30:13,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:13,152 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:13,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:13,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1860545892, now seen corresponding path program 1 times [2020-12-22 19:30:13,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:13,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299101493] [2020-12-22 19:30:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:30:14,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299101493] [2020-12-22 19:30:14,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289303815] [2020-12-22 19:30:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:14,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 99 conjunts are in the unsatisfiable core [2020-12-22 19:30:14,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:30:14,340 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:30:14,340 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:14,342 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:14,342 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:14,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:30:14,495 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:14,495 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:30:14,497 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:14,498 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:14,501 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:14,502 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:14,502 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2020-12-22 19:30:14,645 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 19:30:14,647 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:14,652 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:14,653 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:14,653 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-12-22 19:30:14,716 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:30:14,718 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:14,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:14,726 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:14,726 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-22 19:30:14,908 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:14,908 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 52 [2020-12-22 19:30:14,910 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:14,932 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-22 19:30:14,933 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:14,933 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:28 [2020-12-22 19:30:15,055 INFO L348 Elim1Store]: treesize reduction 34, result has 60.0 percent of original size [2020-12-22 19:30:15,056 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 70 [2020-12-22 19:30:15,058 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:15,065 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:15,066 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:15,066 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:39 [2020-12-22 19:30:15,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:15,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:15,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:15,540 INFO L348 Elim1Store]: treesize reduction 28, result has 65.0 percent of original size [2020-12-22 19:30:15,541 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 81 [2020-12-22 19:30:15,543 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:15,554 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:15,556 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:15,557 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:42 [2020-12-22 19:30:16,056 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_27|], 2=[|v_#memory_$Pointer$.offset_33|], 12=[|v_#memory_$Pointer$.base_59|]} [2020-12-22 19:30:16,062 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 27 treesize of output 19 [2020-12-22 19:30:16,063 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:16,084 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:16,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:16,090 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 80 [2020-12-22 19:30:16,091 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:16,107 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:16,275 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-12-22 19:30:16,276 INFO L348 Elim1Store]: treesize reduction 10, result has 95.4 percent of original size [2020-12-22 19:30:16,276 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 260 [2020-12-22 19:30:16,281 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-22 19:30:16,281 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:30:16,282 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:16,312 INFO L625 ElimStorePlain]: treesize reduction 38, result has 62.7 percent of original size [2020-12-22 19:30:16,314 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:16,314 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:144, output treesize:41 [2020-12-22 19:30:16,769 INFO L443 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.offset|], 2=[|#memory_$Pointer$.base|]} [2020-12-22 19:30:16,772 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 25 treesize of output 17 [2020-12-22 19:30:16,773 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:16,781 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:16,788 INFO L348 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-12-22 19:30:16,788 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 20 [2020-12-22 19:30:16,790 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:16,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:16,797 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 19:30:16,797 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:53, output treesize:9 [2020-12-22 19:30:16,913 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 28 treesize of output 10 [2020-12-22 19:30:16,914 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:16,918 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:16,919 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:16,919 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:7 [2020-12-22 19:30:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:30:16,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:30:16,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28] total 52 [2020-12-22 19:30:16,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151604404] [2020-12-22 19:30:16,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-12-22 19:30:16,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:16,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-12-22 19:30:16,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=2533, Unknown=0, NotChecked=0, Total=2652 [2020-12-22 19:30:16,998 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 52 states. [2020-12-22 19:30:19,259 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-12-22 19:30:19,622 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2020-12-22 19:30:19,999 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2020-12-22 19:30:20,323 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2020-12-22 19:30:20,578 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-12-22 19:30:20,886 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2020-12-22 19:30:21,217 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2020-12-22 19:30:21,514 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-12-22 19:30:21,846 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2020-12-22 19:30:22,128 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-12-22 19:30:22,423 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2020-12-22 19:30:22,927 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2020-12-22 19:30:23,326 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2020-12-22 19:30:23,678 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2020-12-22 19:30:24,049 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2020-12-22 19:30:24,416 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2020-12-22 19:30:24,786 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2020-12-22 19:30:25,173 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-12-22 19:30:25,807 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2020-12-22 19:30:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:25,917 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2020-12-22 19:30:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 19:30:25,918 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 54 [2020-12-22 19:30:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:25,919 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:30:25,919 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:30:25,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=643, Invalid=5837, Unknown=0, NotChecked=0, Total=6480 [2020-12-22 19:30:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:30:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2020-12-22 19:30:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 19:30:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-12-22 19:30:25,924 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 54 [2020-12-22 19:30:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:25,925 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-12-22 19:30:25,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-12-22 19:30:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-12-22 19:30:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 19:30:25,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:25,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:30:26,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-12-22 19:30:26,139 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:26,140 INFO L82 PathProgramCache]: Analyzing trace with hash 15597466, now seen corresponding path program 1 times [2020-12-22 19:30:26,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:26,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647878409] [2020-12-22 19:30:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 19:30:26,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647878409] [2020-12-22 19:30:26,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769292133] [2020-12-22 19:30:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:26,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 19:30:26,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:30:26,324 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:30:26,325 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:26,326 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:26,327 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:26,327 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:30:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 19:30:26,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:30:26,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 9 [2020-12-22 19:30:26,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134668613] [2020-12-22 19:30:26,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:30:26,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:26,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:30:26,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:30:26,412 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 9 states. [2020-12-22 19:30:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:26,676 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2020-12-22 19:30:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:30:26,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-12-22 19:30:26,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:26,677 INFO L225 Difference]: With dead ends: 99 [2020-12-22 19:30:26,677 INFO L226 Difference]: Without dead ends: 99 [2020-12-22 19:30:26,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:30:26,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-22 19:30:26,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2020-12-22 19:30:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:30:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-12-22 19:30:26,680 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 58 [2020-12-22 19:30:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:26,681 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-12-22 19:30:26,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:30:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-12-22 19:30:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 19:30:26,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:26,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:30:26,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:26,890 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:26,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:26,890 INFO L82 PathProgramCache]: Analyzing trace with hash 15597467, now seen corresponding path program 1 times [2020-12-22 19:30:26,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:26,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292743072] [2020-12-22 19:30:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 19:30:27,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292743072] [2020-12-22 19:30:27,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:30:27,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:30:27,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867821597] [2020-12-22 19:30:27,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:30:27,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:27,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:30:27,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:30:27,023 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 9 states. [2020-12-22 19:30:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:27,325 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2020-12-22 19:30:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:30:27,325 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-12-22 19:30:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:27,326 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:30:27,326 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 19:30:27,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:30:27,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 19:30:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-12-22 19:30:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:30:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2020-12-22 19:30:27,329 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 58 [2020-12-22 19:30:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:27,329 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2020-12-22 19:30:27,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:30:27,329 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2020-12-22 19:30:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 19:30:27,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:27,330 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:30:27,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 19:30:27,330 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:27,331 INFO L82 PathProgramCache]: Analyzing trace with hash 483555367, now seen corresponding path program 1 times [2020-12-22 19:30:27,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:27,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997606172] [2020-12-22 19:30:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 19:30:27,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997606172] [2020-12-22 19:30:27,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:30:27,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 19:30:27,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997571012] [2020-12-22 19:30:27,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:30:27,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:27,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:30:27,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:30:27,426 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 10 states. [2020-12-22 19:30:27,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:27,631 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-12-22 19:30:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:30:27,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-12-22 19:30:27,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:27,632 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:30:27,632 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 19:30:27,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:30:27,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 19:30:27,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-12-22 19:30:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:30:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-12-22 19:30:27,635 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 59 [2020-12-22 19:30:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:27,636 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-12-22 19:30:27,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:30:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-12-22 19:30:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 19:30:27,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:27,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:30:27,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 19:30:27,637 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:27,637 INFO L82 PathProgramCache]: Analyzing trace with hash 807767045, now seen corresponding path program 1 times [2020-12-22 19:30:27,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:27,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936989595] [2020-12-22 19:30:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 19:30:27,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936989595] [2020-12-22 19:30:27,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002532150] [2020-12-22 19:30:27,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:27,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 68 conjunts are in the unsatisfiable core [2020-12-22 19:30:27,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:30:27,843 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:30:27,845 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:27,848 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:27,848 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:27,849 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:30:28,112 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:28,112 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 65 [2020-12-22 19:30:28,114 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 2, 1] term [2020-12-22 19:30:28,114 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:28,116 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:30:28,156 INFO L625 ElimStorePlain]: treesize reduction 52, result has 35.8 percent of original size [2020-12-22 19:30:28,157 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:28,159 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:28,159 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:54, output treesize:22 [2020-12-22 19:30:28,442 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 17 treesize of output 9 [2020-12-22 19:30:28,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:28,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:28,461 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:28,461 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:11 [2020-12-22 19:30:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:30:28,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:30:28,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18] total 23 [2020-12-22 19:30:28,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614982124] [2020-12-22 19:30:28,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 19:30:28,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:28,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 19:30:28,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2020-12-22 19:30:28,499 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 24 states. [2020-12-22 19:30:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:30,117 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2020-12-22 19:30:30,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:30:30,118 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 61 [2020-12-22 19:30:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:30,119 INFO L225 Difference]: With dead ends: 90 [2020-12-22 19:30:30,119 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:30:30,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=335, Invalid=1387, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 19:30:30,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:30:30,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2020-12-22 19:30:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:30:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2020-12-22 19:30:30,123 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 61 [2020-12-22 19:30:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:30,123 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2020-12-22 19:30:30,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 19:30:30,124 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2020-12-22 19:30:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 19:30:30,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:30,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:30:30,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 19:30:30,325 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash 807767046, now seen corresponding path program 1 times [2020-12-22 19:30:30,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:30,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276999032] [2020-12-22 19:30:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:30:31,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276999032] [2020-12-22 19:30:31,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823144678] [2020-12-22 19:30:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:31,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 102 conjunts are in the unsatisfiable core [2020-12-22 19:30:31,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:30:31,616 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_41|], 1=[|v_#valid_64|]} [2020-12-22 19:30:31,619 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:30:31,620 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:31,632 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:31,639 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:31,640 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:30:31,642 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:31,644 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:31,646 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:31,656 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:31,657 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:31,657 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2020-12-22 19:30:31,842 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 19:30:31,843 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:31,860 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:31,865 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 19:30:31,866 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:31,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:31,881 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:31,882 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2020-12-22 19:30:31,976 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2020-12-22 19:30:31,978 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:31,994 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:31,998 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:30:32,000 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:32,014 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:32,015 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:32,016 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:68, output treesize:48 [2020-12-22 19:30:32,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:32,218 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2020-12-22 19:30:32,220 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:32,243 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:32,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:32,249 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 43 [2020-12-22 19:30:32,252 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:32,274 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:32,275 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:32,276 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:91, output treesize:83 [2020-12-22 19:30:32,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:32,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:32,397 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2020-12-22 19:30:32,398 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:32,432 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:32,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:32,451 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:32,451 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 75 [2020-12-22 19:30:32,455 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:32,486 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:32,488 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 19:30:32,489 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:109, output treesize:131 [2020-12-22 19:30:33,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,133 INFO L348 Elim1Store]: treesize reduction 68, result has 61.6 percent of original size [2020-12-22 19:30:33,133 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 165 [2020-12-22 19:30:33,138 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:33,179 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:33,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,192 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:33,192 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 102 [2020-12-22 19:30:33,195 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:33,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:33,228 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 19:30:33,228 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:172, output treesize:131 [2020-12-22 19:30:33,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,420 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:33,421 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 103 treesize of output 98 [2020-12-22 19:30:33,423 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:33,439 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:33,440 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:33,441 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:138, output treesize:64 [2020-12-22 19:30:33,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:33,753 INFO L348 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2020-12-22 19:30:33,754 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 74 [2020-12-22 19:30:33,757 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:33,787 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:33,790 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-22 19:30:33,791 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:33,792 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-22 19:30:33,794 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:33,794 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:83, output treesize:78 [2020-12-22 19:30:33,795 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:33,929 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:34,073 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:34,203 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:34,334 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:34,458 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:34,591 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:34,723 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:34,849 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:34,983 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:35,111 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:35,244 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:35,584 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 8, 1] term [2020-12-22 19:30:35,584 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:35,799 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:36,024 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-22 19:30:36,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:36,544 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:36,547 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:36,552 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:36,554 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:36,558 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:36,564 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:30:36,583 INFO L443 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.base|], 12=[|#memory_$Pointer$.offset|]} [2020-12-22 19:30:36,590 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2020-12-22 19:30:36,592 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:36,600 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2020-12-22 19:30:36,601 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:36,673 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:36,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:36,686 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 26 [2020-12-22 19:30:36,689 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:36,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:36,696 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 28 [2020-12-22 19:30:36,697 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:36,746 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:36,749 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:36,750 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:169, output treesize:19 [2020-12-22 19:30:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:30:37,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:30:37,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2020-12-22 19:30:37,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859478857] [2020-12-22 19:30:37,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-12-22 19:30:37,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:37,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-12-22 19:30:37,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 19:30:37,057 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 54 states. [2020-12-22 19:30:38,257 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-12-22 19:30:38,487 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-22 19:30:38,799 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2020-12-22 19:30:39,045 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-12-22 19:30:39,320 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-12-22 19:30:39,684 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2020-12-22 19:30:40,210 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 103 [2020-12-22 19:30:41,021 WARN L197 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 134 [2020-12-22 19:30:41,893 WARN L197 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 140 [2020-12-22 19:30:43,035 WARN L197 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 148 [2020-12-22 19:30:43,935 WARN L197 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 142 [2020-12-22 19:30:44,301 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-12-22 19:30:44,653 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-12-22 19:30:45,100 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-12-22 19:30:45,412 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-12-22 19:30:45,969 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2020-12-22 19:30:46,581 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-12-22 19:30:47,141 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-12-22 19:30:47,922 WARN L197 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-12-22 19:30:48,622 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-12-22 19:30:48,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:48,799 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-12-22 19:30:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 19:30:48,800 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 61 [2020-12-22 19:30:48,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:48,800 INFO L225 Difference]: With dead ends: 91 [2020-12-22 19:30:48,800 INFO L226 Difference]: Without dead ends: 91 [2020-12-22 19:30:48,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 24 SyntacticMatches, 12 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=658, Invalid=5348, Unknown=0, NotChecked=0, Total=6006 [2020-12-22 19:30:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-22 19:30:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 84. [2020-12-22 19:30:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:30:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-12-22 19:30:48,805 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 61 [2020-12-22 19:30:48,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:48,805 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-12-22 19:30:48,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-12-22 19:30:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-12-22 19:30:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 19:30:48,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:48,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:30:49,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 19:30:49,007 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:49,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:49,008 INFO L82 PathProgramCache]: Analyzing trace with hash -729026719, now seen corresponding path program 1 times [2020-12-22 19:30:49,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:49,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162801079] [2020-12-22 19:30:49,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 19:30:49,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162801079] [2020-12-22 19:30:49,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:30:49,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:30:49,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929428990] [2020-12-22 19:30:49,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:30:49,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:49,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:30:49,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:30:49,126 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 9 states. [2020-12-22 19:30:49,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:49,416 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-12-22 19:30:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:30:49,417 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-12-22 19:30:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:49,418 INFO L225 Difference]: With dead ends: 83 [2020-12-22 19:30:49,418 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 19:30:49,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:30:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 19:30:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-22 19:30:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:30:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-12-22 19:30:49,422 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 62 [2020-12-22 19:30:49,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:49,422 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-12-22 19:30:49,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:30:49,423 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-12-22 19:30:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 19:30:49,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:49,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:49,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 19:30:49,424 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:30:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:49,425 INFO L82 PathProgramCache]: Analyzing trace with hash -513583802, now seen corresponding path program 1 times [2020-12-22 19:30:49,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:49,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805869707] [2020-12-22 19:30:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:30:50,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805869707] [2020-12-22 19:30:50,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567649164] [2020-12-22 19:30:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:50,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 85 conjunts are in the unsatisfiable core [2020-12-22 19:30:50,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:30:50,429 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:50,430 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:30:50,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:50,433 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:50,434 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:50,448 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:50,449 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:50,450 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:23 [2020-12-22 19:30:50,686 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 19:30:50,688 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:50,706 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:50,707 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:50,707 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2020-12-22 19:30:50,802 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:30:50,806 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:50,822 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:50,823 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:50,824 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-22 19:30:51,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:51,006 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2020-12-22 19:30:51,009 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:51,031 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:51,032 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:51,033 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:43 [2020-12-22 19:30:51,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:51,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:51,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:51,205 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:51,206 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 123 [2020-12-22 19:30:51,209 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:51,230 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:51,231 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:51,232 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:69, output treesize:65 [2020-12-22 19:30:51,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:51,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:51,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:51,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:51,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:51,883 INFO L348 Elim1Store]: treesize reduction 52, result has 60.9 percent of original size [2020-12-22 19:30:51,883 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 72 treesize of output 116 [2020-12-22 19:30:51,887 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:51,910 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:51,912 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:51,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:84, output treesize:65 [2020-12-22 19:30:52,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:52,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:52,355 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-22 19:30:52,356 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:52,356 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 84 treesize of output 241 [2020-12-22 19:30:52,361 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-12-22 19:30:52,361 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:30:52,364 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:52,440 INFO L625 ElimStorePlain]: treesize reduction 58, result has 57.0 percent of original size [2020-12-22 19:30:52,442 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-22 19:30:52,443 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:52,444 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:30:52,449 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:52,449 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:71 [2020-12-22 19:30:52,450 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:52,587 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:52,727 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:52,871 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:53,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:53,160 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:53,300 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:53,438 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:53,577 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:53,721 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:53,866 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:54,005 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:54,139 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:54,260 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:54,391 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:54,534 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:54,668 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:54,808 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:54,960 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:55,107 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:55,245 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:55,386 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:55,532 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:55,877 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:55,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:30:55,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:55,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:55,909 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:30:55,914 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:55,914 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 28 [2020-12-22 19:30:55,916 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:30:55,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:55,923 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:30:55,927 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:55,927 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 28 [2020-12-22 19:30:55,930 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-22 19:30:55,974 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:55,976 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:55,978 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-22 19:30:55,979 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:127, output treesize:13 [2020-12-22 19:30:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 19:30:56,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:30:56,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 44 [2020-12-22 19:30:56,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646471662] [2020-12-22 19:30:56,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-12-22 19:30:56,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:56,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-12-22 19:30:56,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1851, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 19:30:56,137 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 45 states. [2020-12-22 19:30:57,402 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-12-22 19:30:57,617 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-12-22 19:30:57,911 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-12-22 19:30:58,141 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-12-22 19:30:58,391 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2020-12-22 19:30:58,710 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-12-22 19:30:59,094 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2020-12-22 19:30:59,636 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 95 [2020-12-22 19:31:00,180 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 99 [2020-12-22 19:31:00,860 WARN L197 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 101 [2020-12-22 19:31:01,437 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 97 [2020-12-22 19:31:01,923 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 19:31:02,428 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-12-22 19:31:02,835 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-12-22 19:31:03,235 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-12-22 19:31:03,769 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-12-22 19:31:04,167 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-22 19:31:04,601 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-12-22 19:31:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:31:04,769 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-12-22 19:31:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 19:31:04,770 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 64 [2020-12-22 19:31:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:31:04,771 INFO L225 Difference]: With dead ends: 85 [2020-12-22 19:31:04,771 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 19:31:04,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 21 SyntacticMatches, 24 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=600, Invalid=4092, Unknown=0, NotChecked=0, Total=4692 [2020-12-22 19:31:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 19:31:04,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2020-12-22 19:31:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:31:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-12-22 19:31:04,776 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 64 [2020-12-22 19:31:04,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:31:04,776 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-12-22 19:31:04,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-12-22 19:31:04,776 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-12-22 19:31:04,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 19:31:04,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:31:04,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:04,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-22 19:31:04,985 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:31:04,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:31:04,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1214842779, now seen corresponding path program 1 times [2020-12-22 19:31:04,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:31:04,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051076942] [2020-12-22 19:31:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:31:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:31:05,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051076942] [2020-12-22 19:31:05,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556593223] [2020-12-22 19:31:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:31:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:05,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 77 conjunts are in the unsatisfiable core [2020-12-22 19:31:05,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:31:05,649 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:31:05,649 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:05,651 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:05,654 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:05,655 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:31:05,676 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:05,677 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:31:05,680 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:05,683 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:05,689 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:05,690 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:05,690 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2020-12-22 19:31:05,750 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 19:31:05,755 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:05,761 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:05,762 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:05,762 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-12-22 19:31:05,811 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:31:05,813 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:05,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:05,822 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:05,823 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2020-12-22 19:31:05,947 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:05,948 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 52 [2020-12-22 19:31:05,949 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:05,976 INFO L625 ElimStorePlain]: treesize reduction 22, result has 58.5 percent of original size [2020-12-22 19:31:05,977 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:05,978 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:31 [2020-12-22 19:31:06,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:06,058 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:06,058 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 84 [2020-12-22 19:31:06,061 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:06,069 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:06,070 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:06,071 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:38 [2020-12-22 19:31:06,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:06,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:06,412 INFO L348 Elim1Store]: treesize reduction 28, result has 64.1 percent of original size [2020-12-22 19:31:06,413 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 77 [2020-12-22 19:31:06,414 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:06,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:06,426 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:06,427 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:58, output treesize:36 [2020-12-22 19:31:06,752 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:06,753 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 180 [2020-12-22 19:31:06,756 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2020-12-22 19:31:06,756 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:31:06,758 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:06,786 INFO L625 ElimStorePlain]: treesize reduction 30, result has 56.5 percent of original size [2020-12-22 19:31:06,787 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:06,788 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:20 [2020-12-22 19:31:06,932 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:06,933 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 27 [2020-12-22 19:31:06,934 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:31:06,935 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:06,936 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:31:06,946 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:06,947 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:06,947 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:18 [2020-12-22 19:31:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:31:07,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:31:07,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 39 [2020-12-22 19:31:07,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543140215] [2020-12-22 19:31:07,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-22 19:31:07,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:31:07,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-22 19:31:07,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1377, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 19:31:07,168 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 39 states. [2020-12-22 19:31:08,537 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-12-22 19:31:08,754 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-12-22 19:31:08,953 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-12-22 19:31:09,166 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-12-22 19:31:10,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:31:10,192 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2020-12-22 19:31:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:31:10,193 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 65 [2020-12-22 19:31:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:31:10,194 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:31:10,194 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 19:31:10,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=396, Invalid=3264, Unknown=0, NotChecked=0, Total=3660 [2020-12-22 19:31:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 19:31:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-12-22 19:31:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 19:31:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2020-12-22 19:31:10,198 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 65 [2020-12-22 19:31:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:31:10,198 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2020-12-22 19:31:10,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-22 19:31:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2020-12-22 19:31:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 19:31:10,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:31:10,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:10,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-22 19:31:10,413 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:31:10,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:31:10,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1501333782, now seen corresponding path program 1 times [2020-12-22 19:31:10,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:31:10,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038779569] [2020-12-22 19:31:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:31:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:31:11,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038779569] [2020-12-22 19:31:11,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315722537] [2020-12-22 19:31:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:31:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:11,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 99 conjunts are in the unsatisfiable core [2020-12-22 19:31:11,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:31:11,985 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:11,986 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:31:11,987 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:11,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:11,989 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:11,998 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:11,999 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,000 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:17 [2020-12-22 19:31:12,194 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 19:31:12,195 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,210 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,224 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 19:31:12,225 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,237 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,237 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,238 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:31 [2020-12-22 19:31:12,322 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2020-12-22 19:31:12,324 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,342 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,347 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2020-12-22 19:31:12,348 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,364 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,364 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,365 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:55 [2020-12-22 19:31:12,559 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,559 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 61 [2020-12-22 19:31:12,562 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,584 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:12,589 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2020-12-22 19:31:12,591 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,611 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,612 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,613 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:80, output treesize:60 [2020-12-22 19:31:12,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:12,721 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,721 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 91 [2020-12-22 19:31:12,724 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,750 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:12,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:12,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:12,808 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,809 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 98 treesize of output 202 [2020-12-22 19:31:12,812 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,835 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:12,836 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:12,836 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:138 [2020-12-22 19:31:13,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:13,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:13,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:13,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:13,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:13,470 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 19:31:13,471 INFO L348 Elim1Store]: treesize reduction 76, result has 61.8 percent of original size [2020-12-22 19:31:13,472 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 123 treesize of output 183 [2020-12-22 19:31:13,475 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:13,519 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:13,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:13,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:13,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:13,543 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:13,544 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 102 [2020-12-22 19:31:13,546 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:13,571 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:13,573 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 19:31:13,573 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:179, output treesize:126 [2020-12-22 19:31:14,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,161 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:14,162 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 166 treesize of output 186 [2020-12-22 19:31:14,166 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:14,213 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:14,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,281 INFO L348 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2020-12-22 19:31:14,282 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 117 [2020-12-22 19:31:14,285 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:14,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:14,314 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 19:31:14,315 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:207, output treesize:138 [2020-12-22 19:31:14,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,829 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:31:14,831 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:31:14,877 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:14,878 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 126 treesize of output 138 [2020-12-22 19:31:14,881 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 19:31:14,882 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 19:31:14,883 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 19:31:14,886 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:14,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:14,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:14,949 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:14,950 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 69 [2020-12-22 19:31:14,952 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:31:14,953 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:31:14,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:31:14,955 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:31:14,956 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:31:14,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:31:14,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:31:14,959 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:31:14,960 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:31:14,961 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:31:14,961 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:31:14,968 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:31:14,972 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 7 xjuncts. [2020-12-22 19:31:15,029 INFO L625 ElimStorePlain]: treesize reduction 46, result has 41.0 percent of original size [2020-12-22 19:31:15,031 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:15,032 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:166, output treesize:28 [2020-12-22 19:31:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:31:15,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:31:15,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27] total 54 [2020-12-22 19:31:15,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431709427] [2020-12-22 19:31:15,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-12-22 19:31:15,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:31:15,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-12-22 19:31:15,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2702, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 19:31:15,516 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 54 states. [2020-12-22 19:31:16,696 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-22 19:31:16,911 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-12-22 19:31:17,152 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2020-12-22 19:31:17,461 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2020-12-22 19:31:17,899 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 91 [2020-12-22 19:31:18,549 WARN L197 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 119 [2020-12-22 19:31:19,222 WARN L197 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 123 [2020-12-22 19:31:20,068 WARN L197 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 127 [2020-12-22 19:31:20,778 WARN L197 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 123 [2020-12-22 19:31:21,564 WARN L197 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 125 [2020-12-22 19:31:22,583 WARN L197 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 150 [2020-12-22 19:31:23,652 WARN L197 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 160 [2020-12-22 19:31:24,657 WARN L197 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 160 [2020-12-22 19:31:25,776 WARN L197 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 165 [2020-12-22 19:31:26,889 WARN L197 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 165 [2020-12-22 19:31:27,916 WARN L197 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 150 [2020-12-22 19:31:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:31:28,077 INFO L93 Difference]: Finished difference Result 73 states and 72 transitions. [2020-12-22 19:31:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:31:28,079 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 67 [2020-12-22 19:31:28,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:31:28,079 INFO L225 Difference]: With dead ends: 73 [2020-12-22 19:31:28,080 INFO L226 Difference]: Without dead ends: 73 [2020-12-22 19:31:28,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=714, Invalid=4986, Unknown=0, NotChecked=0, Total=5700 [2020-12-22 19:31:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-22 19:31:28,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-12-22 19:31:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 19:31:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 72 transitions. [2020-12-22 19:31:28,083 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 72 transitions. Word has length 67 [2020-12-22 19:31:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:31:28,083 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 72 transitions. [2020-12-22 19:31:28,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-12-22 19:31:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 72 transitions. [2020-12-22 19:31:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 19:31:28,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:31:28,083 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1] [2020-12-22 19:31:28,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:31:28,284 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:31:28,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:31:28,285 INFO L82 PathProgramCache]: Analyzing trace with hash 327205690, now seen corresponding path program 1 times [2020-12-22 19:31:28,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:31:28,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299670468] [2020-12-22 19:31:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:31:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:31:29,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299670468] [2020-12-22 19:31:29,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797475594] [2020-12-22 19:31:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:31:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:29,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 19:31:29,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:31:29,171 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:31:29,172 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:29,174 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:29,175 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:29,175 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:31:29,510 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:31:29,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:29,572 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:31:29,595 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:29,596 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:31:29,597 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:29,606 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 19:31:29,607 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:29,653 INFO L625 ElimStorePlain]: treesize reduction 23, result has 54.0 percent of original size [2020-12-22 19:31:29,655 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 2 xjuncts. [2020-12-22 19:31:29,655 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:24 [2020-12-22 19:31:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 19:31:29,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:31:29,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 14] total 34 [2020-12-22 19:31:29,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545108305] [2020-12-22 19:31:29,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-22 19:31:29,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:31:29,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-22 19:31:29,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1086, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 19:31:29,816 INFO L87 Difference]: Start difference. First operand 73 states and 72 transitions. Second operand 35 states. [2020-12-22 19:31:30,885 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 19:31:31,106 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-12-22 19:31:32,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:31:32,126 INFO L93 Difference]: Finished difference Result 72 states and 71 transitions. [2020-12-22 19:31:32,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:31:32,127 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 69 [2020-12-22 19:31:32,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:31:32,128 INFO L225 Difference]: With dead ends: 72 [2020-12-22 19:31:32,128 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 19:31:32,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=378, Invalid=2484, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 19:31:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 19:31:32,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-12-22 19:31:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 19:31:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 71 transitions. [2020-12-22 19:31:32,131 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 71 transitions. Word has length 69 [2020-12-22 19:31:32,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:31:32,131 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 71 transitions. [2020-12-22 19:31:32,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-22 19:31:32,131 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 71 transitions. [2020-12-22 19:31:32,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 19:31:32,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:31:32,132 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1] [2020-12-22 19:31:32,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:31:32,333 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:31:32,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:31:32,334 INFO L82 PathProgramCache]: Analyzing trace with hash 912062464, now seen corresponding path program 1 times [2020-12-22 19:31:32,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:31:32,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638647936] [2020-12-22 19:31:32,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:31:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:31:33,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638647936] [2020-12-22 19:31:33,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144907426] [2020-12-22 19:31:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:31:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:33,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 78 conjunts are in the unsatisfiable core [2020-12-22 19:31:33,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:31:33,743 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:33,744 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 63 [2020-12-22 19:31:33,746 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:33,759 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:33,760 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:33,760 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:31 [2020-12-22 19:31:34,085 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 19:31:34,088 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:34,108 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:34,109 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:34,109 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2020-12-22 19:31:34,213 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 19:31:34,214 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:34,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:34,237 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:34,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:51, output treesize:47 [2020-12-22 19:31:34,484 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:34,484 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 52 [2020-12-22 19:31:34,486 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:34,544 INFO L625 ElimStorePlain]: treesize reduction 22, result has 71.1 percent of original size [2020-12-22 19:31:34,545 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:34,545 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:58, output treesize:54 [2020-12-22 19:31:34,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:34,678 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:34,679 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 94 [2020-12-22 19:31:34,682 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:34,707 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:34,709 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:34,709 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:73, output treesize:69 [2020-12-22 19:31:35,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:35,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:35,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:35,343 INFO L348 Elim1Store]: treesize reduction 28, result has 65.0 percent of original size [2020-12-22 19:31:35,343 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2020-12-22 19:31:35,346 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:35,372 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:35,375 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:35,375 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:91, output treesize:77 [2020-12-22 19:31:35,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:35,998 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:35,999 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 200 [2020-12-22 19:31:36,003 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-12-22 19:31:36,003 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:31:36,005 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:36,058 INFO L625 ElimStorePlain]: treesize reduction 34, result has 70.9 percent of original size [2020-12-22 19:31:36,062 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:36,062 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:100, output treesize:62 [2020-12-22 19:31:36,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:36,429 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:36,429 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 39 [2020-12-22 19:31:36,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:31:36,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:31:36,433 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:31:36,434 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:31:36,435 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:36,463 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:36,465 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:31:36,466 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:31:36,467 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:31:36,468 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:31:36,469 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:31:36,471 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 4 disjuncts [2020-12-22 19:31:36,472 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:36,472 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:72, output treesize:75 [2020-12-22 19:31:36,474 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 19:31:36,607 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 19:31:37,581 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-22 19:31:37,626 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:37,627 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 19:31:37,629 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:37,643 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 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-22 19:31:37,645 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:37,681 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:37,681 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 19:31:37,683 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:37,832 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-12-22 19:31:37,833 INFO L625 ElimStorePlain]: treesize reduction 52, result has 66.2 percent of original size [2020-12-22 19:31:37,835 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:37,836 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 3 xjuncts. [2020-12-22 19:31:37,837 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:106, output treesize:102 [2020-12-22 19:31:37,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:37,839 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:38,072 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:38,073 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:38,403 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:38,404 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-22 19:31:38,408 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:38,418 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:38,420 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 19:31:38,420 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:25 [2020-12-22 19:31:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:31:38,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:31:38,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 46 [2020-12-22 19:31:38,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284147156] [2020-12-22 19:31:38,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-12-22 19:31:38,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:31:38,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-12-22 19:31:38,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2054, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 19:31:38,618 INFO L87 Difference]: Start difference. First operand 72 states and 71 transitions. Second operand 47 states. [2020-12-22 19:31:40,327 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-12-22 19:31:40,668 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2020-12-22 19:31:41,254 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 41 [2020-12-22 19:31:41,605 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2020-12-22 19:31:42,089 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 63 [2020-12-22 19:31:42,669 WARN L197 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 74 [2020-12-22 19:31:43,471 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 83 [2020-12-22 19:31:44,012 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 80 [2020-12-22 19:31:45,228 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2020-12-22 19:31:45,556 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 58 [2020-12-22 19:31:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:31:46,453 INFO L93 Difference]: Finished difference Result 71 states and 70 transitions. [2020-12-22 19:31:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 19:31:46,454 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 71 [2020-12-22 19:31:46,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:31:46,454 INFO L225 Difference]: With dead ends: 71 [2020-12-22 19:31:46,454 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:31:46,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 41 SyntacticMatches, 11 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=354, Invalid=4202, Unknown=0, NotChecked=0, Total=4556 [2020-12-22 19:31:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:31:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:31:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:31:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:31:46,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2020-12-22 19:31:46,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:31:46,456 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:31:46,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-12-22 19:31:46,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:31:46,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:31:46,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-12-22 19:31:46,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:31:46 BoogieIcfgContainer [2020-12-22 19:31:46,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:31:46,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:31:46,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:31:46,667 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:31:46,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:29:18" (3/4) ... [2020-12-22 19:31:46,672 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:31:46,687 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-22 19:31:46,688 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-22 19:31:46,688 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 19:31:46,688 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 19:31:46,753 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-simple/dll2c_update_all.i-witness.graphml [2020-12-22 19:31:46,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:31:46,754 INFO L168 Benchmark]: Toolchain (without parser) took 150363.13 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 124.2 MB in the beginning and 200.0 MB in the end (delta: -75.8 MB). Peak memory consumption was 88.9 MB. Max. memory is 8.0 GB. [2020-12-22 19:31:46,754 INFO L168 Benchmark]: CDTParser took 0.22 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 19:31:46,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.79 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 132.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2020-12-22 19:31:46,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.50 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 130.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:31:46,755 INFO L168 Benchmark]: Boogie Preprocessor took 40.34 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 128.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:31:46,755 INFO L168 Benchmark]: RCFGBuilder took 898.13 ms. Allocated memory is still 151.0 MB. Free memory was 128.5 MB in the beginning and 92.8 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:31:46,756 INFO L168 Benchmark]: TraceAbstraction took 148621.99 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 92.3 MB in the beginning and 204.2 MB in the end (delta: -111.9 MB). Peak memory consumption was 51.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:31:46,756 INFO L168 Benchmark]: Witness Printer took 86.17 ms. Allocated memory is still 314.6 MB. Free memory was 204.2 MB in the beginning and 200.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:31:46,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 639.79 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 132.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 63.50 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 130.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.34 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 128.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 898.13 ms. Allocated memory is still 151.0 MB. Free memory was 128.5 MB in the beginning and 92.8 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 148621.99 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 92.3 MB in the beginning and 204.2 MB in the end (delta: -111.9 MB). Peak memory consumption was 51.7 MB. Max. memory is 8.0 GB. * Witness Printer took 86.17 ms. Allocated memory is still 314.6 MB. Free memory was 204.2 MB in the beginning and 200.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 614]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 609]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 624]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 614]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 621]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 582]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 581]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 581]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 624]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 603]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 606]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 605]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 582]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 605]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 617]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 609]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 643]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 581]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 617]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 581]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 603]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 590]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 609]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 582]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 582]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 592]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 592]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 590]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 597]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 626]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 597]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 621]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 598]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 606]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 598]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 606]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 40 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 40 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 148.5s, OverallIterations: 43, TraceHistogramMax: 3, AutomataDifference: 90.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2187 SDtfs, 18658 SDslu, 11859 SDs, 0 SdLazy, 19424 SolverSat, 1697 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1984 GetRequests, 839 SyntacticMatches, 71 SemanticMatches, 1074 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9414 ImplicationChecksByTransitivity, 98.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 43 MinimizatonAttempts, 1061 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 47.6s InterpolantComputationTime, 2772 NumberOfCodeBlocks, 2772 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 2706 ConstructedInterpolants, 214 QuantifiedInterpolants, 2543004 SizeOfPredicates, 504 NumberOfNonLiveVariables, 6962 ConjunctsInSsa, 1081 ConjunctsInUnsatCore, 66 InterpolantComputations, 23 PerfectInterpolantSequences, 469/725 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 correct! Received shutdown request...