/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_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:29:24,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:29:24,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:29:24,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:29:24,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:29:24,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:29:24,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:29:24,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:29:24,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:29:24,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:29:24,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:29:24,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:29:24,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:29:24,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:29:24,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:29:24,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:29:24,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:29:24,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:29:24,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:29:24,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:29:24,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:29:24,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:29:24,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:29:24,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:29:24,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:29:24,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:29:24,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:29:24,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:29:24,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:29:24,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:29:24,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:29:24,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:29:24,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:29:24,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:29:24,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:29:24,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:29:24,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:29:24,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:29:24,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:29:24,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:29:24,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:29:24,532 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:29:24,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:29:24,532 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:29:24,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:29:24,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:29:24,533 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:29:24,534 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:29:24,534 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:29:24,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:29:24,535 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:29:24,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:29:24,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:29:24,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:29:24,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:29:24,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:29:24,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:29:24,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:29:24,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:29:24,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:29:24,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:29:24,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:29:24,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:29:25,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:29:25,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:29:25,030 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:29:25,031 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:29:25,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_update_all_reverse.i [2020-12-22 19:29:25,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6159c222f/7ca3f5c2071349298c7a44999183e53a/FLAGc3597aafc [2020-12-22 19:29:25,836 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:29:25,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_update_all_reverse.i [2020-12-22 19:29:25,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6159c222f/7ca3f5c2071349298c7a44999183e53a/FLAGc3597aafc [2020-12-22 19:29:26,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6159c222f/7ca3f5c2071349298c7a44999183e53a [2020-12-22 19:29:26,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:29:26,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:29:26,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:29:26,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:29:26,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:29:26,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b87383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26, skipping insertion in model container [2020-12-22 19:29:26,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:29:26,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:29:26,575 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_reverse.i[24556,24569] [2020-12-22 19:29:26,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:29:26,604 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:29:26,697 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_reverse.i[24556,24569] [2020-12-22 19:29:26,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:29:26,773 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:29:26,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26 WrapperNode [2020-12-22 19:29:26,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:29:26,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:29:26,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:29:26,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:29:26,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:29:26,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:29:26,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:29:26,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:29:26,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (1/1) ... [2020-12-22 19:29:26,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:29:26,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:29:26,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:29:26,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:29:26,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (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 19:29:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:29:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:29:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:29:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 19:29:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:29:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 19:29:27,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:29:27,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:29:27,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:29:27,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:29:27,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:29:27,903 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 19:29:27,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:29:27 BoogieIcfgContainer [2020-12-22 19:29:27,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:29:27,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:29:27,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:29:27,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:29:27,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:29:26" (1/3) ... [2020-12-22 19:29:27,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177d84d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:29:27, skipping insertion in model container [2020-12-22 19:29:27,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:29:26" (2/3) ... [2020-12-22 19:29:27,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177d84d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:29:27, skipping insertion in model container [2020-12-22 19:29:27,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:29:27" (3/3) ... [2020-12-22 19:29:27,919 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_update_all_reverse.i [2020-12-22 19:29:27,927 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:29:27,937 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 40 error locations. [2020-12-22 19:29:27,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2020-12-22 19:29:27,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:29:27,977 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:29:27,978 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:29:27,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:29:27,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:29:27,978 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:29:27,978 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:29:27,978 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:29:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-12-22 19:29:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:29:28,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:28,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:29:28,010 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 19:29:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:28,017 INFO L82 PathProgramCache]: Analyzing trace with hash 925702, now seen corresponding path program 1 times [2020-12-22 19:29:28,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:28,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865598130] [2020-12-22 19:29:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:28,220 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 19:29:28,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865598130] [2020-12-22 19:29:28,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:28,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:29:28,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006421823] [2020-12-22 19:29:28,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:29:28,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:28,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:29:28,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:29:28,248 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 3 states. [2020-12-22 19:29:28,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:28,388 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-12-22 19:29:28,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:29:28,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:29:28,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:28,401 INFO L225 Difference]: With dead ends: 115 [2020-12-22 19:29:28,401 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 19:29:28,403 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 19:29:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 19:29:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 89. [2020-12-22 19:29:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:29:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2020-12-22 19:29:28,450 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 4 [2020-12-22 19:29:28,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:28,451 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2020-12-22 19:29:28,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:29:28,451 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2020-12-22 19:29:28,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:29:28,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:28,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:29:28,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:29:28,453 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 19:29:28,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:28,454 INFO L82 PathProgramCache]: Analyzing trace with hash 925703, now seen corresponding path program 1 times [2020-12-22 19:29:28,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:28,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394139090] [2020-12-22 19:29:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:28,570 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 19:29:28,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394139090] [2020-12-22 19:29:28,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:28,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:29:28,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818083867] [2020-12-22 19:29:28,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:29:28,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:28,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:29:28,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:29:28,577 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 3 states. [2020-12-22 19:29:28,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:28,665 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-12-22 19:29:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:29:28,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:29:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:28,668 INFO L225 Difference]: With dead ends: 83 [2020-12-22 19:29:28,668 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 19:29:28,669 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 19:29:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 19:29:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-22 19:29:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:29:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2020-12-22 19:29:28,680 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 4 [2020-12-22 19:29:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:28,681 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2020-12-22 19:29:28,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:29:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2020-12-22 19:29:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:29:28,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:28,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:28,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:29:28,683 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 19:29:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:28,684 INFO L82 PathProgramCache]: Analyzing trace with hash 613332465, now seen corresponding path program 1 times [2020-12-22 19:29:28,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:28,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958675528] [2020-12-22 19:29:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:28,751 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 19:29:28,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958675528] [2020-12-22 19:29:28,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:28,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:29:28,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252877532] [2020-12-22 19:29:28,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:29:28,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:28,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:29:28,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:29:28,755 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 3 states. [2020-12-22 19:29:28,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:28,771 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-12-22 19:29:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:29:28,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 19:29:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:28,774 INFO L225 Difference]: With dead ends: 98 [2020-12-22 19:29:28,774 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 19:29:28,775 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 19:29:28,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 19:29:28,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2020-12-22 19:29:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:29:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2020-12-22 19:29:28,787 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 10 [2020-12-22 19:29:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:28,788 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2020-12-22 19:29:28,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:29:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2020-12-22 19:29:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:29:28,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:28,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:28,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:29:28,790 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 19:29:28,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:28,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1103137848, now seen corresponding path program 1 times [2020-12-22 19:29:28,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:28,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179069476] [2020-12-22 19:29:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:28,955 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 19:29:28,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179069476] [2020-12-22 19:29:28,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:28,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:29:28,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220415745] [2020-12-22 19:29:28,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:29:28,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:28,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:29:28,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:28,983 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 5 states. [2020-12-22 19:29:29,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:29,155 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions. [2020-12-22 19:29:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:29,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 19:29:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:29,158 INFO L225 Difference]: With dead ends: 109 [2020-12-22 19:29:29,158 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 19:29:29,159 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 19:29:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 19:29:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 83. [2020-12-22 19:29:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:29:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2020-12-22 19:29:29,171 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 16 [2020-12-22 19:29:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:29,173 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2020-12-22 19:29:29,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:29:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2020-12-22 19:29:29,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:29:29,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:29,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:29,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:29:29,175 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 19:29:29,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:29,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1103137849, now seen corresponding path program 1 times [2020-12-22 19:29:29,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:29,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635920293] [2020-12-22 19:29:29,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:29,301 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 19:29:29,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635920293] [2020-12-22 19:29:29,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:29,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:29:29,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427426022] [2020-12-22 19:29:29,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:29:29,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:29,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:29:29,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:29,307 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 5 states. [2020-12-22 19:29:29,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:29,447 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-12-22 19:29:29,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:29,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 19:29:29,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:29,449 INFO L225 Difference]: With dead ends: 88 [2020-12-22 19:29:29,449 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:29:29,449 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 19:29:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:29:29,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-12-22 19:29:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:29:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2020-12-22 19:29:29,458 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 16 [2020-12-22 19:29:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:29,458 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2020-12-22 19:29:29,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:29:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2020-12-22 19:29:29,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:29:29,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:29,460 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 19:29:29,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:29:29,460 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 19:29:29,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:29,461 INFO L82 PathProgramCache]: Analyzing trace with hash -741449383, now seen corresponding path program 1 times [2020-12-22 19:29:29,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:29,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750387878] [2020-12-22 19:29:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:29,634 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 19:29:29,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750387878] [2020-12-22 19:29:29,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:29,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:29:29,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254661688] [2020-12-22 19:29:29,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:29,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:29,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:29,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:29:29,641 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand 6 states. [2020-12-22 19:29:29,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:29,829 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-12-22 19:29:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:29,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-22 19:29:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:29,831 INFO L225 Difference]: With dead ends: 113 [2020-12-22 19:29:29,831 INFO L226 Difference]: Without dead ends: 113 [2020-12-22 19:29:29,832 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 19:29:29,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-22 19:29:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 91. [2020-12-22 19:29:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 19:29:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-12-22 19:29:29,840 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 18 [2020-12-22 19:29:29,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:29,840 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-12-22 19:29:29,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-12-22 19:29:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:29:29,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:29,842 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 19:29:29,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:29:29,842 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 19:29:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:29,849 INFO L82 PathProgramCache]: Analyzing trace with hash -741449382, now seen corresponding path program 1 times [2020-12-22 19:29:29,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:29,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719090916] [2020-12-22 19:29:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:30,041 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 19:29:30,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719090916] [2020-12-22 19:29:30,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:30,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:29:30,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379687544] [2020-12-22 19:29:30,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:29:30,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:30,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:29:30,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:29:30,047 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 7 states. [2020-12-22 19:29:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:30,316 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2020-12-22 19:29:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:29:30,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 19:29:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:30,318 INFO L225 Difference]: With dead ends: 112 [2020-12-22 19:29:30,318 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 19:29:30,320 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 19:29:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 19:29:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 91. [2020-12-22 19:29:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 19:29:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2020-12-22 19:29:30,333 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 18 [2020-12-22 19:29:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:30,334 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2020-12-22 19:29:30,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:29:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2020-12-22 19:29:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:29:30,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:30,335 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 19:29:30,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:29:30,336 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 19:29:30,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:30,337 INFO L82 PathProgramCache]: Analyzing trace with hash 431868768, now seen corresponding path program 1 times [2020-12-22 19:29:30,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:30,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026497987] [2020-12-22 19:29:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:30,432 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 19:29:30,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026497987] [2020-12-22 19:29:30,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:30,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:29:30,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146330185] [2020-12-22 19:29:30,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:30,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:30,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:30,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:29:30,437 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 6 states. [2020-12-22 19:29:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:30,552 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-12-22 19:29:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:30,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-12-22 19:29:30,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:30,554 INFO L225 Difference]: With dead ends: 92 [2020-12-22 19:29:30,554 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 19:29:30,554 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 19:29:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 19:29:30,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-12-22 19:29:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 19:29:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2020-12-22 19:29:30,573 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 20 [2020-12-22 19:29:30,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:30,573 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2020-12-22 19:29:30,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:30,573 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2020-12-22 19:29:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:29:30,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:30,578 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 19:29:30,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:29:30,578 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 19:29:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:30,579 INFO L82 PathProgramCache]: Analyzing trace with hash 498265101, now seen corresponding path program 1 times [2020-12-22 19:29:30,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:30,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791699753] [2020-12-22 19:29:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:30,678 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 19:29:30,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791699753] [2020-12-22 19:29:30,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817338076] [2020-12-22 19:29:30,684 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 19:29:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:30,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:29:30,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:30,873 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 19:29:30,874 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:30,895 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:30,896 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:30,897 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:29:30,986 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:30,986 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 19:29:30,989 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:31,014 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-22 19:29:31,017 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 19:29:31,017 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-12-22 19:29:31,057 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 19:29:31,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:31,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-22 19:29:31,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134521901] [2020-12-22 19:29:31,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:29:31,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:31,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:29:31,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:29:31,059 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 8 states. [2020-12-22 19:29:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:31,308 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-12-22 19:29:31,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:29:31,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-22 19:29:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:31,309 INFO L225 Difference]: With dead ends: 112 [2020-12-22 19:29:31,309 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 19:29:31,310 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 19:29:31,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 19:29:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2020-12-22 19:29:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 19:29:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2020-12-22 19:29:31,317 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 21 [2020-12-22 19:29:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:31,318 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2020-12-22 19:29:31,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:29:31,318 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2020-12-22 19:29:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:29:31,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:31,319 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 19:29:31,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 19:29:31,534 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 19:29:31,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:31,535 INFO L82 PathProgramCache]: Analyzing trace with hash 498265102, now seen corresponding path program 1 times [2020-12-22 19:29:31,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:31,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791820527] [2020-12-22 19:29:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:31,661 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 19:29:31,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791820527] [2020-12-22 19:29:31,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182243337] [2020-12-22 19:29:31,662 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 19:29:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:31,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 19:29:31,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:31,851 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 19:29:31,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:31,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-12-22 19:29:31,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017157628] [2020-12-22 19:29:31,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:29:31,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:31,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:29:31,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:29:31,854 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 10 states. [2020-12-22 19:29:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:32,141 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2020-12-22 19:29:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:29:32,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-12-22 19:29:32,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:32,146 INFO L225 Difference]: With dead ends: 150 [2020-12-22 19:29:32,146 INFO L226 Difference]: Without dead ends: 150 [2020-12-22 19:29:32,147 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 19:29:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-22 19:29:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 93. [2020-12-22 19:29:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:29:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-12-22 19:29:32,154 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 21 [2020-12-22 19:29:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:32,155 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-12-22 19:29:32,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:29:32,155 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-12-22 19:29:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:29:32,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:32,156 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 19:29:32,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 19:29:32,372 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 19:29:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:32,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1733651014, now seen corresponding path program 1 times [2020-12-22 19:29:32,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:32,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803525558] [2020-12-22 19:29:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:32,450 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 19:29:32,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803525558] [2020-12-22 19:29:32,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:32,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:29:32,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252540180] [2020-12-22 19:29:32,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:32,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:32,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:32,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:29:32,453 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 6 states. [2020-12-22 19:29:32,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:32,661 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-12-22 19:29:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:29:32,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 19:29:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:32,663 INFO L225 Difference]: With dead ends: 111 [2020-12-22 19:29:32,663 INFO L226 Difference]: Without dead ends: 111 [2020-12-22 19:29:32,664 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 19:29:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-22 19:29:32,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2020-12-22 19:29:32,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 19:29:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2020-12-22 19:29:32,668 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 22 [2020-12-22 19:29:32,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:32,668 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2020-12-22 19:29:32,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:32,668 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2020-12-22 19:29:32,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:29:32,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:32,670 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 19:29:32,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:29:32,671 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 19:29:32,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:32,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1733651013, now seen corresponding path program 1 times [2020-12-22 19:29:32,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:32,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161979296] [2020-12-22 19:29:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:32,794 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 19:29:32,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161979296] [2020-12-22 19:29:32,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:32,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:29:32,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937141631] [2020-12-22 19:29:32,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:32,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:32,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:32,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:29:32,800 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 6 states. [2020-12-22 19:29:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:32,988 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2020-12-22 19:29:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:29:32,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 19:29:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:32,989 INFO L225 Difference]: With dead ends: 89 [2020-12-22 19:29:32,990 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 19:29:32,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:29:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 19:29:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-22 19:29:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:29:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-12-22 19:29:32,996 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 22 [2020-12-22 19:29:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:32,997 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-12-22 19:29:32,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-12-22 19:29:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:29:33,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:33,007 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 19:29:33,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:29:33,008 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 19:29:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:33,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1015769950, now seen corresponding path program 1 times [2020-12-22 19:29:33,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:33,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660069039] [2020-12-22 19:29:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:33,125 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 19:29:33,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660069039] [2020-12-22 19:29:33,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:33,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:29:33,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115415832] [2020-12-22 19:29:33,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:29:33,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:33,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:29:33,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:29:33,130 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 9 states. [2020-12-22 19:29:33,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:33,525 INFO L93 Difference]: Finished difference Result 157 states and 170 transitions. [2020-12-22 19:29:33,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:29:33,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-22 19:29:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:33,530 INFO L225 Difference]: With dead ends: 157 [2020-12-22 19:29:33,530 INFO L226 Difference]: Without dead ends: 157 [2020-12-22 19:29:33,531 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 19:29:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-22 19:29:33,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 92. [2020-12-22 19:29:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 19:29:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-12-22 19:29:33,536 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 27 [2020-12-22 19:29:33,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:33,536 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-12-22 19:29:33,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:29:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-12-22 19:29:33,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:29:33,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:33,542 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 19:29:33,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:29:33,543 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 19:29:33,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:33,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1015769949, now seen corresponding path program 1 times [2020-12-22 19:29:33,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:33,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270087320] [2020-12-22 19:29:33,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:33,628 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 19:29:33,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270087320] [2020-12-22 19:29:33,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:33,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:29:33,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886448906] [2020-12-22 19:29:33,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:29:33,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:33,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:29:33,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:33,633 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 5 states. [2020-12-22 19:29:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:33,688 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-12-22 19:29:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:33,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 19:29:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:33,691 INFO L225 Difference]: With dead ends: 119 [2020-12-22 19:29:33,691 INFO L226 Difference]: Without dead ends: 119 [2020-12-22 19:29:33,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:29:33,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-22 19:29:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 95. [2020-12-22 19:29:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 19:29:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2020-12-22 19:29:33,696 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 27 [2020-12-22 19:29:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:33,696 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2020-12-22 19:29:33,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:29:33,697 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2020-12-22 19:29:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:29:33,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:33,700 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 19:29:33,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:29:33,701 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 19:29:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:33,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1015769894, now seen corresponding path program 1 times [2020-12-22 19:29:33,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:33,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678942963] [2020-12-22 19:29:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:33,833 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 19:29:33,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678942963] [2020-12-22 19:29:33,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:33,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:29:33,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796601535] [2020-12-22 19:29:33,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:29:33,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:33,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:29:33,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:29:33,837 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 9 states. [2020-12-22 19:29:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:34,208 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2020-12-22 19:29:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:29:34,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-22 19:29:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:34,210 INFO L225 Difference]: With dead ends: 141 [2020-12-22 19:29:34,210 INFO L226 Difference]: Without dead ends: 141 [2020-12-22 19:29:34,211 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 19:29:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-22 19:29:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 95. [2020-12-22 19:29:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 19:29:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2020-12-22 19:29:34,214 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 27 [2020-12-22 19:29:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:34,215 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2020-12-22 19:29:34,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:29:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2020-12-22 19:29:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:29:34,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:34,216 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 19:29:34,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:29:34,216 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 19:29:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:34,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1538690034, now seen corresponding path program 1 times [2020-12-22 19:29:34,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:34,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471580019] [2020-12-22 19:29:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:34,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471580019] [2020-12-22 19:29:34,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733171638] [2020-12-22 19:29:34,582 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 19:29:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:34,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-22 19:29:34,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:34,715 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 19:29:34,716 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:34,720 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:34,721 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:34,722 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:29:34,854 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:34,855 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 19:29:34,860 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:34,889 INFO L625 ElimStorePlain]: treesize reduction 14, result has 62.2 percent of original size [2020-12-22 19:29:34,890 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:34,890 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2020-12-22 19:29:35,094 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 19:29:35,095 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:35,110 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:35,112 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:35,113 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-22 19:29:35,217 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:35,218 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 19:29:35,229 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:35,265 INFO L625 ElimStorePlain]: treesize reduction 28, result has 56.3 percent of original size [2020-12-22 19:29:35,267 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:35,268 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2020-12-22 19:29:35,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:35,416 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:35,427 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:35,428 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 19:29:35,431 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:35,476 INFO L625 ElimStorePlain]: treesize reduction 16, result has 74.2 percent of original size [2020-12-22 19:29:35,480 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 19:29:35,481 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:46 [2020-12-22 19:29:35,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:35,599 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:35,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:35,602 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:35,617 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:35,618 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 19:29:35,623 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:35,669 INFO L625 ElimStorePlain]: treesize reduction 42, result has 62.5 percent of original size [2020-12-22 19:29:35,672 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 19:29:35,673 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:70 [2020-12-22 19:29:36,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:36,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:36,139 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:36,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:36,141 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:29:36,151 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:36,151 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 19:29:36,154 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:36,164 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:36,167 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 19:29:36,167 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:11 [2020-12-22 19:29:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:36,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:36,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2020-12-22 19:29:36,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388391696] [2020-12-22 19:29:36,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-22 19:29:36,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:36,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-22 19:29:36,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 19:29:36,204 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 33 states. [2020-12-22 19:29:36,982 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2020-12-22 19:29:37,400 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-12-22 19:29:37,690 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-12-22 19:29:38,018 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-12-22 19:29:38,430 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2020-12-22 19:29:38,942 WARN L197 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2020-12-22 19:29:39,475 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 115 [2020-12-22 19:29:39,882 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-12-22 19:29:40,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:40,309 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2020-12-22 19:29:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 19:29:40,309 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 30 [2020-12-22 19:29:40,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:40,312 INFO L225 Difference]: With dead ends: 137 [2020-12-22 19:29:40,312 INFO L226 Difference]: Without dead ends: 137 [2020-12-22 19:29:40,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=418, Invalid=2032, Unknown=0, NotChecked=0, Total=2450 [2020-12-22 19:29:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-22 19:29:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 105. [2020-12-22 19:29:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-22 19:29:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2020-12-22 19:29:40,318 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 30 [2020-12-22 19:29:40,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:40,318 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2020-12-22 19:29:40,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-22 19:29:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2020-12-22 19:29:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:29:40,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:40,319 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 19:29:40,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 19:29:40,533 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 19:29:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:40,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1538690035, now seen corresponding path program 1 times [2020-12-22 19:29:40,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:40,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578756420] [2020-12-22 19:29:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:41,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578756420] [2020-12-22 19:29:41,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313755821] [2020-12-22 19:29:41,068 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 19:29:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:41,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 72 conjunts are in the unsatisfiable core [2020-12-22 19:29:41,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:41,177 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 19:29:41,178 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,183 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:41,184 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,184 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:29:41,414 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:41,414 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 19:29:41,416 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:29:41,421 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,435 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:41,440 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 19:29:41,441 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:41,455 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,456 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:27 [2020-12-22 19:29:41,706 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 19:29:41,707 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,729 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:41,736 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 19:29:41,737 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,758 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:41,760 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,761 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:44 [2020-12-22 19:29:41,861 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2020-12-22 19:29:41,862 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,887 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:41,895 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 19:29:41,897 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,922 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:41,924 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:41,926 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:76, output treesize:56 [2020-12-22 19:29:42,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:42,154 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 19:29:42,156 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:42,195 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:42,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:42,202 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 65 treesize of output 46 [2020-12-22 19:29:42,205 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:42,246 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:42,247 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:42,248 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:105, output treesize:97 [2020-12-22 19:29:42,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:42,430 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:42,430 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 74 treesize of output 78 [2020-12-22 19:29:42,435 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:42,481 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:42,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:42,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:42,495 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 19:29:42,499 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:42,540 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:42,545 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 19:29:42,545 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:123, output treesize:229 [2020-12-22 19:29:43,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:43,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:29:43,213 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:43,214 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 213 treesize of output 259 [2020-12-22 19:29:43,223 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:29:43,225 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:43,258 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:43,300 INFO L348 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2020-12-22 19:29:43,301 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 109 treesize of output 62 [2020-12-22 19:29:43,304 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:43,320 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:43,328 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 19:29:43,329 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:243, output treesize:21 [2020-12-22 19:29:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:43,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:43,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 36 [2020-12-22 19:29:43,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985950378] [2020-12-22 19:29:43,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-22 19:29:43,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:43,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-22 19:29:43,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1247, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 19:29:43,544 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 37 states. [2020-12-22 19:29:44,502 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-12-22 19:29:44,766 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-12-22 19:29:45,151 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2020-12-22 19:29:45,413 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2020-12-22 19:29:45,662 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-12-22 19:29:45,935 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2020-12-22 19:29:46,389 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2020-12-22 19:29:47,083 WARN L197 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 109 [2020-12-22 19:29:48,068 WARN L197 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 142 [2020-12-22 19:29:49,573 WARN L197 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 239 DAG size of output: 175 [2020-12-22 19:29:51,076 WARN L197 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 251 DAG size of output: 177 [2020-12-22 19:29:52,146 WARN L197 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 148 [2020-12-22 19:29:54,295 WARN L197 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 137 [2020-12-22 19:29:55,896 WARN L197 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 228 DAG size of output: 164 [2020-12-22 19:29:56,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:56,031 INFO L93 Difference]: Finished difference Result 275 states and 296 transitions. [2020-12-22 19:29:56,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:29:56,032 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 30 [2020-12-22 19:29:56,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:56,035 INFO L225 Difference]: With dead ends: 275 [2020-12-22 19:29:56,035 INFO L226 Difference]: Without dead ends: 275 [2020-12-22 19:29:56,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=470, Invalid=2500, Unknown=0, NotChecked=0, Total=2970 [2020-12-22 19:29:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-22 19:29:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 112. [2020-12-22 19:29:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-22 19:29:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2020-12-22 19:29:56,044 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 30 [2020-12-22 19:29:56,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:56,044 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2020-12-22 19:29:56,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-22 19:29:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2020-12-22 19:29:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:29:56,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:56,046 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 19:29:56,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:56,255 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 19:29:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:56,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2090471037, now seen corresponding path program 1 times [2020-12-22 19:29:56,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:56,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762733468] [2020-12-22 19:29:56,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:56,300 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 19:29:56,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762733468] [2020-12-22 19:29:56,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041307952] [2020-12-22 19:29:56,301 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 19:29:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:56,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:29:56,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:56,461 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 19:29:56,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:29:56,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-12-22 19:29:56,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890174904] [2020-12-22 19:29:56,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:29:56,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:56,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:29:56,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:56,463 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand 4 states. [2020-12-22 19:29:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:56,472 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2020-12-22 19:29:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:29:56,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 19:29:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:56,473 INFO L225 Difference]: With dead ends: 94 [2020-12-22 19:29:56,474 INFO L226 Difference]: Without dead ends: 94 [2020-12-22 19:29:56,474 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 19:29:56,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-22 19:29:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-12-22 19:29:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-22 19:29:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2020-12-22 19:29:56,477 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 31 [2020-12-22 19:29:56,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:56,477 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2020-12-22 19:29:56,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:29:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2020-12-22 19:29:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 19:29:56,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:56,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:29:56,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 19:29:56,692 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 19:29:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:56,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1069444446, now seen corresponding path program 2 times [2020-12-22 19:29:56,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:56,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075302959] [2020-12-22 19:29:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:29:56,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075302959] [2020-12-22 19:29:56,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:56,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:29:56,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509765770] [2020-12-22 19:29:56,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:29:56,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:56,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:29:56,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:29:56,791 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand 6 states. [2020-12-22 19:29:56,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:56,836 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-12-22 19:29:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:56,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-12-22 19:29:56,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:56,837 INFO L225 Difference]: With dead ends: 81 [2020-12-22 19:29:56,837 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 19:29:56,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:29:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 19:29:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-22 19:29:56,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 19:29:56,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2020-12-22 19:29:56,842 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 33 [2020-12-22 19:29:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:56,843 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2020-12-22 19:29:56,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:29:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2020-12-22 19:29:56,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 19:29:56,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:56,843 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, 1, 1, 1] [2020-12-22 19:29:56,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 19:29:56,844 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 19:29:56,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:56,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1070446836, now seen corresponding path program 1 times [2020-12-22 19:29:56,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:56,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228905197] [2020-12-22 19:29:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:56,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:29:56,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228905197] [2020-12-22 19:29:56,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:56,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:29:56,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857099546] [2020-12-22 19:29:56,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:29:56,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:56,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:29:56,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:29:56,959 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand 9 states. [2020-12-22 19:29:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:57,274 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2020-12-22 19:29:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:29:57,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-12-22 19:29:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:57,276 INFO L225 Difference]: With dead ends: 106 [2020-12-22 19:29:57,276 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 19:29:57,276 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 19:29:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 19:29:57,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2020-12-22 19:29:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:29:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-12-22 19:29:57,279 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 36 [2020-12-22 19:29:57,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:57,280 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-12-22 19:29:57,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:29:57,280 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-12-22 19:29:57,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 19:29:57,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:57,281 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, 1, 1, 1] [2020-12-22 19:29:57,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:29:57,281 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 19:29:57,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:57,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1070446835, now seen corresponding path program 1 times [2020-12-22 19:29:57,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:57,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868107801] [2020-12-22 19:29:57,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:29:57,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868107801] [2020-12-22 19:29:57,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186732391] [2020-12-22 19:29:57,392 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 19:29:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:57,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:29:57,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:29:57,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:57,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 19:29:57,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783638505] [2020-12-22 19:29:57,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:29:57,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:57,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:29:57,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:29:57,563 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 8 states. [2020-12-22 19:29:57,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:57,599 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-12-22 19:29:57,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:29:57,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-12-22 19:29:57,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:57,600 INFO L225 Difference]: With dead ends: 105 [2020-12-22 19:29:57,600 INFO L226 Difference]: Without dead ends: 105 [2020-12-22 19:29:57,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:29:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-22 19:29:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2020-12-22 19:29:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 19:29:57,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2020-12-22 19:29:57,604 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 36 [2020-12-22 19:29:57,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:57,605 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2020-12-22 19:29:57,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:29:57,605 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2020-12-22 19:29:57,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 19:29:57,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:57,606 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 19:29:57,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:57,819 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 19:29:57,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:57,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1216701710, now seen corresponding path program 1 times [2020-12-22 19:29:57,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:57,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050905499] [2020-12-22 19:29:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:57,929 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 19:29:57,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050905499] [2020-12-22 19:29:57,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305419762] [2020-12-22 19:29:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:58,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:29:58,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:58,097 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 19:29:58,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:29:58,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 19:29:58,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794917149] [2020-12-22 19:29:58,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:29:58,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:58,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:29:58,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:29:58,099 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand 9 states. [2020-12-22 19:29:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:58,152 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2020-12-22 19:29:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:58,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 19:29:58,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:58,154 INFO L225 Difference]: With dead ends: 100 [2020-12-22 19:29:58,154 INFO L226 Difference]: Without dead ends: 100 [2020-12-22 19:29:58,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:29:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-22 19:29:58,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2020-12-22 19:29:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-22 19:29:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 110 transitions. [2020-12-22 19:29:58,157 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 110 transitions. Word has length 37 [2020-12-22 19:29:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:58,158 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 110 transitions. [2020-12-22 19:29:58,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:29:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 110 transitions. [2020-12-22 19:29:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:29:58,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:58,158 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 19:29:58,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:58,374 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 19:29:58,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:58,375 INFO L82 PathProgramCache]: Analyzing trace with hash 213273889, now seen corresponding path program 2 times [2020-12-22 19:29:58,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:58,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427955825] [2020-12-22 19:29:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:29:58,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427955825] [2020-12-22 19:29:58,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:58,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:29:58,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468091281] [2020-12-22 19:29:58,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:29:58,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:58,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:29:58,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:29:58,440 INFO L87 Difference]: Start difference. First operand 94 states and 110 transitions. Second operand 5 states. [2020-12-22 19:29:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:58,483 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2020-12-22 19:29:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:29:58,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-12-22 19:29:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:58,485 INFO L225 Difference]: With dead ends: 99 [2020-12-22 19:29:58,485 INFO L226 Difference]: Without dead ends: 99 [2020-12-22 19:29:58,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:29:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-22 19:29:58,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2020-12-22 19:29:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:29:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2020-12-22 19:29:58,488 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 40 [2020-12-22 19:29:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:58,489 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2020-12-22 19:29:58,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:29:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2020-12-22 19:29:58,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:29:58,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:58,490 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 19:29:58,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 19:29:58,490 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 19:29:58,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:58,491 INFO L82 PathProgramCache]: Analyzing trace with hash 213273944, now seen corresponding path program 1 times [2020-12-22 19:29:58,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:58,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534617946] [2020-12-22 19:29:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:58,600 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 19:29:58,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534617946] [2020-12-22 19:29:58,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:29:58,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:29:58,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890663407] [2020-12-22 19:29:58,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:29:58,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:29:58,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:29:58,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:29:58,602 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 9 states. [2020-12-22 19:29:58,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:29:58,970 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2020-12-22 19:29:58,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:29:58,971 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-12-22 19:29:58,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:29:58,972 INFO L225 Difference]: With dead ends: 128 [2020-12-22 19:29:58,973 INFO L226 Difference]: Without dead ends: 128 [2020-12-22 19:29:58,973 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 19:29:58,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-12-22 19:29:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 93. [2020-12-22 19:29:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:29:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2020-12-22 19:29:58,977 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 40 [2020-12-22 19:29:58,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:29:58,978 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2020-12-22 19:29:58,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:29:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2020-12-22 19:29:58,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 19:29:58,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:29:58,979 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 19:29:58,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 19:29:58,979 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 19:29:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:29:58,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1387503254, now seen corresponding path program 1 times [2020-12-22 19:29:58,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:29:58,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756561758] [2020-12-22 19:29:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:29:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:29:59,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756561758] [2020-12-22 19:29:59,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015003044] [2020-12-22 19:29:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:29:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:29:59,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 74 conjunts are in the unsatisfiable core [2020-12-22 19:29:59,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:29:59,683 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 19:29:59,685 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:59,687 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:59,688 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:59,688 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:29:59,729 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:59,729 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 19:29:59,734 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:29:59,736 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:59,746 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:29:59,747 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:29:59,747 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:21 [2020-12-22 19:29:59,984 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 19:29:59,985 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:29:59,999 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:00,000 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:00,000 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2020-12-22 19:30:00,085 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 19:30:00,086 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:00,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:00,103 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 19:30:00,103 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:37 [2020-12-22 19:30:00,274 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:00,275 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 19:30:00,277 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:00,323 INFO L625 ElimStorePlain]: treesize reduction 22, result has 66.7 percent of original size [2020-12-22 19:30:00,324 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 19:30:00,325 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:48, output treesize:44 [2020-12-22 19:30:00,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:00,418 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:00,419 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 48 treesize of output 89 [2020-12-22 19:30:00,422 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:00,447 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:00,448 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 19:30:00,449 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:61 [2020-12-22 19:30:01,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:01,101 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:01,102 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 81 treesize of output 206 [2020-12-22 19:30:01,108 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-22 19:30:01,108 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:30:01,110 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:01,151 INFO L625 ElimStorePlain]: treesize reduction 30, result has 67.0 percent of original size [2020-12-22 19:30:01,153 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 19:30:01,153 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:92, output treesize:42 [2020-12-22 19:30:01,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:01,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:01,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:01,319 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 29 [2020-12-22 19:30:01,321 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:01,338 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:01,340 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 19:30:01,340 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:46 [2020-12-22 19:30:01,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:01,498 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 38 treesize of output 16 [2020-12-22 19:30:01,499 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:01,508 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:01,511 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 19:30:01,511 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:15 [2020-12-22 19:30:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:30:01,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:30:01,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 41 [2020-12-22 19:30:01,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16703154] [2020-12-22 19:30:01,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-12-22 19:30:01,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:01,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-12-22 19:30:01,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1568, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 19:30:01,667 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 42 states. [2020-12-22 19:30:02,892 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-22 19:30:03,192 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-12-22 19:30:03,515 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-12-22 19:30:03,851 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2020-12-22 19:30:04,196 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-12-22 19:30:04,611 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-12-22 19:30:04,781 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-12-22 19:30:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:30:05,253 INFO L93 Difference]: Finished difference Result 156 states and 173 transitions. [2020-12-22 19:30:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 19:30:05,253 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 43 [2020-12-22 19:30:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:30:05,254 INFO L225 Difference]: With dead ends: 156 [2020-12-22 19:30:05,254 INFO L226 Difference]: Without dead ends: 156 [2020-12-22 19:30:05,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=459, Invalid=3201, Unknown=0, NotChecked=0, Total=3660 [2020-12-22 19:30:05,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-22 19:30:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 101. [2020-12-22 19:30:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 19:30:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2020-12-22 19:30:05,259 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 43 [2020-12-22 19:30:05,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:30:05,260 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2020-12-22 19:30:05,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-12-22 19:30:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2020-12-22 19:30:05,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 19:30:05,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:30:05,260 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 19:30:05,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:30:05,475 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 19:30:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:30:05,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1387503255, now seen corresponding path program 1 times [2020-12-22 19:30:05,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:30:05,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063329060] [2020-12-22 19:30:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:30:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:30:06,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063329060] [2020-12-22 19:30:06,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306469489] [2020-12-22 19:30:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:30:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:30:06,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 85 conjunts are in the unsatisfiable core [2020-12-22 19:30:06,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:30:06,631 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:06,631 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 19:30:06,633 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:06,635 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:30:06,637 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:06,642 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:06,643 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:06,643 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2020-12-22 19:30:06,868 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 19:30:06,869 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:06,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:06,881 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:30:06,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2020-12-22 19:30:06,958 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 19:30:06,960 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:06,969 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:06,971 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 19:30:06,971 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-22 19:30:07,177 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:07,178 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 19:30:07,183 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:07,217 INFO L625 ElimStorePlain]: treesize reduction 22, result has 60.7 percent of original size [2020-12-22 19:30:07,219 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 19:30:07,219 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:34 [2020-12-22 19:30:09,318 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-22 19:30:09,328 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_31|], 12=[|v_#memory_$Pointer$.base_44|]} [2020-12-22 19:30:09,333 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 19:30:09,334 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:09,352 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:09,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:09,425 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:09,426 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 50 treesize of output 144 [2020-12-22 19:30:09,430 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:09,448 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:09,450 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 19:30:09,451 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:69, output treesize:58 [2020-12-22 19:30:11,543 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-22 19:30:13,643 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-22 19:30:15,748 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-22 19:30:17,868 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-22 19:30:19,990 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 31 [2020-12-22 19:30:22,110 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 31 [2020-12-22 19:30:22,129 INFO L443 ElimStorePlain]: Different costs {6=[|v_#memory_$Pointer$.offset_32|], 20=[|v_#memory_$Pointer$.base_45|]} [2020-12-22 19:30:22,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,138 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 120 treesize of output 101 [2020-12-22 19:30:22,141 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:22,171 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:22,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,326 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-12-22 19:30:22,326 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:22,327 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 106 treesize of output 371 [2020-12-22 19:30:22,333 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-12-22 19:30:22,333 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:30:22,335 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:22,399 INFO L625 ElimStorePlain]: treesize reduction 86, result has 55.7 percent of original size [2020-12-22 19:30:22,402 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 19:30:22,402 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:160, output treesize:85 [2020-12-22 19:30:22,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:30:22,646 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:30:22,648 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:30:22,655 INFO L443 ElimStorePlain]: Different costs {6=[|v_#memory_$Pointer$.offset_33|], 12=[|v_#memory_$Pointer$.base_46|]} [2020-12-22 19:30:22,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,680 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 38 [2020-12-22 19:30:22,682 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:22,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,699 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 44 [2020-12-22 19:30:22,701 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:22,775 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:22,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,875 INFO L348 Elim1Store]: treesize reduction 36, result has 65.4 percent of original size [2020-12-22 19:30:22,876 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 73 treesize of output 108 [2020-12-22 19:30:22,878 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:22,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:22,891 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 35 [2020-12-22 19:30:22,893 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:22,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:22,947 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-22 19:30:22,947 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:219, output treesize:137 [2020-12-22 19:30:23,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:30:23,174 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:30:23,176 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:30:23,177 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:30:23,179 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:30:23,183 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:30:23,193 INFO L443 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.offset|], 6=[|#memory_$Pointer$.base|]} [2020-12-22 19:30:23,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:23,201 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 47 treesize of output 25 [2020-12-22 19:30:23,202 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:23,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:23,209 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 49 treesize of output 31 [2020-12-22 19:30:23,211 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:30:23,258 INFO L625 ElimStorePlain]: treesize reduction 63, result has 44.7 percent of original size [2020-12-22 19:30:23,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:30:23,263 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:23,264 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 40 treesize of output 18 [2020-12-22 19:30:23,265 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:30:23,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:30:23,279 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 19:30:23,280 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:165, output treesize:13 [2020-12-22 19:30:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:30:23,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:30:23,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2020-12-22 19:30:23,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681352299] [2020-12-22 19:30:23,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-22 19:30:23,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:30:23,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-22 19:30:23,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1949, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 19:30:23,462 INFO L87 Difference]: Start difference. First operand 101 states and 118 transitions. Second operand 46 states. [2020-12-22 19:30:24,449 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 19:30:24,710 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-12-22 19:30:24,942 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-12-22 19:30:29,206 WARN L197 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-12-22 19:30:33,525 WARN L197 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-12-22 19:30:41,940 WARN L197 SmtUtils]: Spent 8.30 s on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-12-22 19:30:54,546 WARN L197 SmtUtils]: Spent 12.46 s on a formula simplification. DAG size of input: 138 DAG size of output: 117 [2020-12-22 19:31:07,211 WARN L197 SmtUtils]: Spent 12.54 s on a formula simplification. DAG size of input: 162 DAG size of output: 124 [2020-12-22 19:31:19,929 WARN L197 SmtUtils]: Spent 12.59 s on a formula simplification. DAG size of input: 170 DAG size of output: 127 [2020-12-22 19:31:32,593 WARN L197 SmtUtils]: Spent 12.51 s on a formula simplification. DAG size of input: 144 DAG size of output: 121 [2020-12-22 19:31:35,016 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-12-22 19:31:35,451 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2020-12-22 19:31:36,130 WARN L197 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 122 [2020-12-22 19:31:36,729 WARN L197 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 127 [2020-12-22 19:31:37,193 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 104 [2020-12-22 19:31:37,714 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 106 [2020-12-22 19:31:38,502 WARN L197 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 125 [2020-12-22 19:31:39,527 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 114 [2020-12-22 19:31:40,141 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 93 [2020-12-22 19:31:40,642 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 95 [2020-12-22 19:31:40,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:31:40,696 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions. [2020-12-22 19:31:40,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 19:31:40,697 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 43 [2020-12-22 19:31:40,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:31:40,698 INFO L225 Difference]: With dead ends: 234 [2020-12-22 19:31:40,698 INFO L226 Difference]: Without dead ends: 234 [2020-12-22 19:31:40,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 89.3s TimeCoverageRelationStatistics Valid=616, Invalid=4354, Unknown=0, NotChecked=0, Total=4970 [2020-12-22 19:31:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-12-22 19:31:40,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 100. [2020-12-22 19:31:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:31:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2020-12-22 19:31:40,703 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 43 [2020-12-22 19:31:40,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:31:40,704 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2020-12-22 19:31:40,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-22 19:31:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2020-12-22 19:31:40,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 19:31:40,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:31:40,705 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 19:31:40,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 19:31:40,907 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 19:31:40,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:31:40,908 INFO L82 PathProgramCache]: Analyzing trace with hash 345919840, now seen corresponding path program 2 times [2020-12-22 19:31:40,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:31:40,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652897984] [2020-12-22 19:31:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:31:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:31:40,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652897984] [2020-12-22 19:31:40,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:31:40,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:31:40,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282274642] [2020-12-22 19:31:40,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:31:40,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:31:40,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:31:40,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:31:40,981 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand 6 states. [2020-12-22 19:31:41,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:31:41,041 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2020-12-22 19:31:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:31:41,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-12-22 19:31:41,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:31:41,043 INFO L225 Difference]: With dead ends: 86 [2020-12-22 19:31:41,043 INFO L226 Difference]: Without dead ends: 86 [2020-12-22 19:31:41,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:31:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-22 19:31:41,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-12-22 19:31:41,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 19:31:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-12-22 19:31:41,046 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 46 [2020-12-22 19:31:41,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:31:41,046 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-12-22 19:31:41,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:31:41,046 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-12-22 19:31:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 19:31:41,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:31:41,047 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, 1, 1, 1] [2020-12-22 19:31:41,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 19:31:41,048 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 19:31:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:31:41,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2083010152, now seen corresponding path program 1 times [2020-12-22 19:31:41,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:31:41,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078710377] [2020-12-22 19:31:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:31:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:31:42,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078710377] [2020-12-22 19:31:42,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488809400] [2020-12-22 19:31:42,504 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 19:31:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:31:42,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 101 conjunts are in the unsatisfiable core [2020-12-22 19:31:42,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:31:42,628 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 19:31:42,629 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:42,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:42,632 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:42,632 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:31:42,815 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:42,815 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 19:31:42,817 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:31:42,819 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:42,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:42,826 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:42,827 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2020-12-22 19:31:43,113 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 19:31:43,114 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:43,121 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:43,122 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:31:43,123 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-12-22 19:31:43,211 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 19:31:43,212 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:43,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:43,220 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:31:43,221 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-22 19:31:43,487 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:43,487 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 19:31:43,492 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:43,524 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-22 19:31:43,526 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 19:31:43,526 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:28 [2020-12-22 19:31:45,635 WARN L197 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 20 [2020-12-22 19:31:45,647 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_34|], 12=[|v_#memory_$Pointer$.base_50|]} [2020-12-22 19:31:45,652 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 19:31:45,653 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:45,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:45,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:45,758 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:45,758 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 144 [2020-12-22 19:31:45,769 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:45,786 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:45,787 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 19:31:45,787 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:52 [2020-12-22 19:31:47,913 WARN L197 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-22 19:31:50,037 WARN L197 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-22 19:31:52,177 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-22 19:31:54,328 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-22 19:31:56,497 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-22 19:31:58,652 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-22 19:31:58,665 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_25|], 6=[|v_#memory_$Pointer$.offset_35|], 20=[|v_#memory_$Pointer$.base_51|]} [2020-12-22 19:31:58,672 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 29 treesize of output 21 [2020-12-22 19:31:58,673 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:58,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:58,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:58,709 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 117 treesize of output 102 [2020-12-22 19:31:58,711 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:58,736 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:59,084 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-12-22 19:31:59,085 INFO L348 Elim1Store]: treesize reduction 10, result has 97.0 percent of original size [2020-12-22 19:31:59,086 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 112 treesize of output 377 [2020-12-22 19:31:59,091 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-12-22 19:31:59,092 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:31:59,094 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:59,159 INFO L625 ElimStorePlain]: treesize reduction 86, result has 53.5 percent of original size [2020-12-22 19:31:59,162 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 19:31:59,162 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:159, output treesize:76 [2020-12-22 19:31:59,488 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:31:59,489 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:31:59,491 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:31:59,501 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_26|], 6=[|v_#memory_$Pointer$.offset_36|], 12=[|v_#memory_$Pointer$.base_52|]} [2020-12-22 19:31:59,520 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 35 treesize of output 34 [2020-12-22 19:31:59,522 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:59,536 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 35 treesize of output 34 [2020-12-22 19:31:59,537 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:59,630 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:59,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,659 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 45 [2020-12-22 19:31:59,662 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:59,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,681 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 39 [2020-12-22 19:31:59,683 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:59,759 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:59,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,784 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 41 [2020-12-22 19:31:59,786 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:59,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:31:59,879 INFO L348 Elim1Store]: treesize reduction 36, result has 65.4 percent of original size [2020-12-22 19:31:59,880 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 79 treesize of output 114 [2020-12-22 19:31:59,892 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-22 19:31:59,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:31:59,948 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-22 19:31:59,948 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:227, output treesize:119 [2020-12-22 19:32:00,484 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:32:00,486 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:32:00,488 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:32:00,497 INFO L443 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.offset|], 6=[|#memory_$Pointer$.base|]} [2020-12-22 19:32:00,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:32:00,506 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 50 treesize of output 36 [2020-12-22 19:32:00,509 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 19:32:00,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:32:00,518 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 48 treesize of output 30 [2020-12-22 19:32:00,520 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:32:00,570 INFO L625 ElimStorePlain]: treesize reduction 69, result has 45.2 percent of original size [2020-12-22 19:32:00,575 INFO L348 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-12-22 19:32:00,575 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 50 treesize of output 28 [2020-12-22 19:32:00,577 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:32:00,589 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:32:00,591 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 19:32:00,591 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:169, output treesize:25 [2020-12-22 19:32:00,905 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 27 treesize of output 15 [2020-12-22 19:32:00,907 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:32:00,914 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:32:00,915 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 19:32:00,916 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:19 [2020-12-22 19:32:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:32:01,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:32:01,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2020-12-22 19:32:01,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167761664] [2020-12-22 19:32:01,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-12-22 19:32:01,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:32:01,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-12-22 19:32:01,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2736, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 19:32:01,394 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 54 states. [2020-12-22 19:32:03,075 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-12-22 19:32:07,581 WARN L197 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-22 19:32:11,961 WARN L197 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-12-22 19:32:20,320 WARN L197 SmtUtils]: Spent 8.22 s on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-12-22 19:32:32,833 WARN L197 SmtUtils]: Spent 12.35 s on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2020-12-22 19:32:45,422 WARN L197 SmtUtils]: Spent 12.43 s on a formula simplification. DAG size of input: 139 DAG size of output: 114 [2020-12-22 19:32:58,090 WARN L197 SmtUtils]: Spent 12.47 s on a formula simplification. DAG size of input: 146 DAG size of output: 118 [2020-12-22 19:33:10,735 WARN L197 SmtUtils]: Spent 12.43 s on a formula simplification. DAG size of input: 131 DAG size of output: 114 [2020-12-22 19:33:13,216 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2020-12-22 19:33:13,649 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-12-22 19:33:14,098 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2020-12-22 19:33:14,797 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 94 [2020-12-22 19:33:15,433 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 121 [2020-12-22 19:33:16,128 WARN L197 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 128 [2020-12-22 19:33:16,669 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 109 [2020-12-22 19:33:17,204 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 111 [2020-12-22 19:33:17,730 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 111 [2020-12-22 19:33:18,256 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 113 [2020-12-22 19:33:18,843 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 117 [2020-12-22 19:33:19,900 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2020-12-22 19:33:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:33:20,093 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2020-12-22 19:33:20,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 19:33:20,094 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 47 [2020-12-22 19:33:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:33:20,095 INFO L225 Difference]: With dead ends: 106 [2020-12-22 19:33:20,095 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 19:33:20,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 91.8s TimeCoverageRelationStatistics Valid=673, Invalid=5807, Unknown=0, NotChecked=0, Total=6480 [2020-12-22 19:33:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 19:33:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 86. [2020-12-22 19:33:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 19:33:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-12-22 19:33:20,100 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 47 [2020-12-22 19:33:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:33:20,100 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-12-22 19:33:20,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-12-22 19:33:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-12-22 19:33:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 19:33:20,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:33:20,101 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 19:33:20,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 19:33:20,317 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 19:33:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:33:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1904627096, now seen corresponding path program 1 times [2020-12-22 19:33:20,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:33:20,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791346953] [2020-12-22 19:33:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:33:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:33:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:33:20,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791346953] [2020-12-22 19:33:20,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816361677] [2020-12-22 19:33:20,821 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 19:33:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:33:20,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-22 19:33:20,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:33:21,139 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 19:33:21,141 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:21,154 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:21,155 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 19:33:21,156 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:28 [2020-12-22 19:33:21,508 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 44 treesize of output 26 [2020-12-22 19:33:21,510 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:21,522 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:21,525 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 19:33:21,525 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:53, output treesize:32 [2020-12-22 19:33:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:33:21,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:33:21,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 29 [2020-12-22 19:33:21,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257696078] [2020-12-22 19:33:21,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-22 19:33:21,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:33:21,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-22 19:33:21,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2020-12-22 19:33:21,754 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 29 states. [2020-12-22 19:33:22,755 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-22 19:33:22,944 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-22 19:33:23,112 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-22 19:33:23,438 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-12-22 19:33:23,684 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-12-22 19:33:23,942 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-12-22 19:33:24,227 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-12-22 19:33:24,505 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-12-22 19:33:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:33:24,610 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-12-22 19:33:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:33:24,611 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2020-12-22 19:33:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:33:24,612 INFO L225 Difference]: With dead ends: 121 [2020-12-22 19:33:24,612 INFO L226 Difference]: Without dead ends: 121 [2020-12-22 19:33:24,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=460, Invalid=1520, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 19:33:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-22 19:33:24,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 90. [2020-12-22 19:33:24,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 19:33:24,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-12-22 19:33:24,616 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 54 [2020-12-22 19:33:24,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:33:24,616 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-12-22 19:33:24,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-22 19:33:24,616 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-12-22 19:33:24,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 19:33:24,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:33:24,617 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] [2020-12-22 19:33:24,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 19:33:24,819 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 19:33:24,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:33:24,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1057698046, now seen corresponding path program 2 times [2020-12-22 19:33:24,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:33:24,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105237334] [2020-12-22 19:33:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:33:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:33:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 19:33:24,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105237334] [2020-12-22 19:33:24,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776481841] [2020-12-22 19:33:24,912 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 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 19:33:25,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:33:25,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:33:25,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:33:25,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:33:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 19:33:25,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:33:25,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 19:33:25,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970443295] [2020-12-22 19:33:25,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:33:25,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:33:25,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:33:25,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:33:25,145 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 9 states. [2020-12-22 19:33:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:33:25,224 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-12-22 19:33:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:33:25,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-12-22 19:33:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:33:25,230 INFO L225 Difference]: With dead ends: 81 [2020-12-22 19:33:25,230 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 19:33:25,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:33:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 19:33:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-22 19:33:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 19:33:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-12-22 19:33:25,238 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 57 [2020-12-22 19:33:25,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:33:25,239 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-12-22 19:33:25,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:33:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-12-22 19:33:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 19:33:25,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:33:25,244 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 19:33:25,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:33:25,457 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 19:33:25,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:33:25,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2061802034, now seen corresponding path program 1 times [2020-12-22 19:33:25,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:33:25,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413518034] [2020-12-22 19:33:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:33:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:33:25,556 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 19:33:25,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413518034] [2020-12-22 19:33:25,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:33:25,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:33:25,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102812738] [2020-12-22 19:33:25,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:33:25,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:33:25,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:33:25,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:33:25,558 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 9 states. [2020-12-22 19:33:25,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:33:25,976 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2020-12-22 19:33:25,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:33:25,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-12-22 19:33:25,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:33:25,978 INFO L225 Difference]: With dead ends: 99 [2020-12-22 19:33:25,978 INFO L226 Difference]: Without dead ends: 99 [2020-12-22 19:33:25,978 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 19:33:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-22 19:33:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2020-12-22 19:33:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:33:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-12-22 19:33:25,981 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 58 [2020-12-22 19:33:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:33:25,981 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-12-22 19:33:25,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:33:25,981 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-12-22 19:33:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 19:33:25,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:33:25,982 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 19:33:25,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 19:33:25,982 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 19:33:25,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:33:25,983 INFO L82 PathProgramCache]: Analyzing trace with hash -2061802033, now seen corresponding path program 1 times [2020-12-22 19:33:25,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:33:25,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787767477] [2020-12-22 19:33:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:33:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:33:26,132 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 19:33:26,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787767477] [2020-12-22 19:33:26,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:33:26,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:33:26,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597905053] [2020-12-22 19:33:26,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:33:26,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:33:26,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:33:26,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:33:26,134 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 9 states. [2020-12-22 19:33:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:33:26,585 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-12-22 19:33:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:33:26,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-12-22 19:33:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:33:26,586 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:33:26,586 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 19:33:26,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:33:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 19:33:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-12-22 19:33:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:33:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2020-12-22 19:33:26,589 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 58 [2020-12-22 19:33:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:33:26,590 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2020-12-22 19:33:26,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:33:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2020-12-22 19:33:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 19:33:26,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:33:26,590 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 19:33:26,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 19:33:26,591 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 19:33:26,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:33:26,591 INFO L82 PathProgramCache]: Analyzing trace with hash 508680307, now seen corresponding path program 1 times [2020-12-22 19:33:26,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:33:26,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055837019] [2020-12-22 19:33:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:33:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:33:26,697 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 19:33:26,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055837019] [2020-12-22 19:33:26,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:33:26,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 19:33:26,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170600136] [2020-12-22 19:33:26,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:33:26,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:33:26,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:33:26,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:33:26,700 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand 10 states. [2020-12-22 19:33:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:33:27,102 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2020-12-22 19:33:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:33:27,103 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-12-22 19:33:27,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:33:27,105 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:33:27,105 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 19:33:27,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:33:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 19:33:27,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-12-22 19:33:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:33:27,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-12-22 19:33:27,109 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 59 [2020-12-22 19:33:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:33:27,110 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-12-22 19:33:27,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:33:27,110 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-12-22 19:33:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 19:33:27,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:33:27,112 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 19:33:27,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 19:33:27,112 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 19:33:27,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:33:27,113 INFO L82 PathProgramCache]: Analyzing trace with hash -816969391, now seen corresponding path program 1 times [2020-12-22 19:33:27,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:33:27,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052932952] [2020-12-22 19:33:27,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:33:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:33:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 19:33:27,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052932952] [2020-12-22 19:33:27,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725703535] [2020-12-22 19:33:27,271 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 19:33:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:33:27,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-22 19:33:27,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:33:27,850 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 19:33:27,852 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:27,863 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:27,866 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:33:27,867 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:5 [2020-12-22 19:33:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 19:33:27,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:33:27,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 19 [2020-12-22 19:33:27,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124028350] [2020-12-22 19:33:27,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 19:33:27,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:33:27,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 19:33:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:33:27,883 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 20 states. [2020-12-22 19:33:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:33:29,050 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2020-12-22 19:33:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 19:33:29,051 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 61 [2020-12-22 19:33:29,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:33:29,052 INFO L225 Difference]: With dead ends: 90 [2020-12-22 19:33:29,052 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:33:29,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 19:33:29,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:33:29,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2020-12-22 19:33:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:33:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2020-12-22 19:33:29,056 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 61 [2020-12-22 19:33:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:33:29,057 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2020-12-22 19:33:29,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 19:33:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2020-12-22 19:33:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 19:33:29,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:33:29,057 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 19:33:29,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-22 19:33:29,259 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 19:33:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:33:29,259 INFO L82 PathProgramCache]: Analyzing trace with hash -816969390, now seen corresponding path program 1 times [2020-12-22 19:33:29,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:33:29,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714914992] [2020-12-22 19:33:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:33:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:33:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 19:33:30,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714914992] [2020-12-22 19:33:30,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974571338] [2020-12-22 19:33:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:33:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:33:30,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 101 conjunts are in the unsatisfiable core [2020-12-22 19:33:30,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:33:31,087 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:31,088 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 19:33:31,090 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:31,092 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:31,094 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:31,111 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:31,113 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:33:31,113 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:17 [2020-12-22 19:33:31,434 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 19:33:31,436 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:31,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:31,470 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 19:33:31,472 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:31,496 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:31,498 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:33:31,498 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:31 [2020-12-22 19:33:31,640 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 19:33:31,642 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:31,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:31,676 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 19:33:31,678 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:31,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:31,705 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:33:31,705 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:55 [2020-12-22 19:33:31,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:31,975 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 19:33:31,977 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:32,023 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:32,048 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:32,049 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 19:33:32,051 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:32,092 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:32,093 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:33:32,094 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:80, output treesize:72 [2020-12-22 19:33:32,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:32,275 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:32,276 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 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 19:33:32,279 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:32,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:32,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:32,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:32,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:32,426 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:32,427 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 82 treesize of output 156 [2020-12-22 19:33:32,431 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:32,476 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:32,478 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 19:33:32,478 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:115, output treesize:122 [2020-12-22 19:33:33,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:33,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:33,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:33,266 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:33,267 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 97 treesize of output 104 [2020-12-22 19:33:33,269 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:33,296 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:33,297 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:33:33,298 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:129, output treesize:63 [2020-12-22 19:33:33,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:33,691 INFO L348 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2020-12-22 19:33:33,691 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 75 treesize of output 74 [2020-12-22 19:33:33,694 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:33,732 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:33,734 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-22 19:33:33,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:33,737 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-22 19:33:33,738 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 19:33:33,738 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:82, output treesize:79 [2020-12-22 19:33:33,740 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:33,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:34,081 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:34,346 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-12-22 19:33:34,533 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 7, 1] term [2020-12-22 19:33:34,533 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:34,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:34,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:34,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:34,558 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 41 [2020-12-22 19:33:34,560 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:34,630 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:34,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:34,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:34,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:34,648 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 39 [2020-12-22 19:33:34,652 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:34,704 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:34,707 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-12-22 19:33:34,708 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:139, output treesize:101 [2020-12-22 19:33:34,877 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:35,040 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:35,201 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:35,398 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:35,727 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-12-22 19:33:35,913 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 7, 1] term [2020-12-22 19:33:35,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:33:36,195 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-12-22 19:33:36,201 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:36,495 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-12-22 19:33:36,510 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 7, 1] term [2020-12-22 19:33:36,510 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:36,855 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-12-22 19:33:37,283 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-12-22 19:33:37,298 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:37,301 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:37,305 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:37,307 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:33:37,310 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:33:37,316 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:33:37,334 INFO L443 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.base|], 12=[|#memory_$Pointer$.offset|]} [2020-12-22 19:33:37,343 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 19:33:37,344 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:37,352 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 19:33:37,354 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:37,456 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-12-22 19:33:37,457 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:37,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:37,474 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 61 treesize of output 28 [2020-12-22 19:33:37,477 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:37,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:33:37,485 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 61 treesize of output 26 [2020-12-22 19:33:37,487 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 19:33:37,539 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:33:37,544 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:33:37,545 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:165, output treesize:14 [2020-12-22 19:33:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:33:37,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:33:37,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 51 [2020-12-22 19:33:37,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625398421] [2020-12-22 19:33:37,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-12-22 19:33:37,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:33:37,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-12-22 19:33:37,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2502, Unknown=0, NotChecked=0, Total=2652 [2020-12-22 19:33:37,658 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand 52 states. [2020-12-22 19:33:39,111 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-12-22 19:33:39,411 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-12-22 19:33:39,770 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-12-22 19:33:40,072 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-12-22 19:33:40,466 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-12-22 19:33:41,124 WARN L197 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2020-12-22 19:33:42,006 WARN L197 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 106