/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/sll2c_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:35:31,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:35:31,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:35:31,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:35:31,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:35:31,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:35:31,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:35:31,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:35:31,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:35:31,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:35:31,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:35:31,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:35:31,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:35:31,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:35:31,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:35:31,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:35:31,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:35:31,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:35:31,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:35:31,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:35:31,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:35:31,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:35:31,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:35:31,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:35:31,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:35:31,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:35:31,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:35:31,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:35:31,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:35:31,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:35:31,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:35:31,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:35:31,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:35:31,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:35:31,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:35:31,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:35:31,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:35:31,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:35:31,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:35:31,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:35:31,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:35:31,557 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:35:31,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:35:31,557 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:35:31,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:35:31,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:35:31,558 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:35:31,559 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:35:31,560 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:35:31,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:35:31,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:35:31,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:35:31,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:35:31,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:35:31,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:35:31,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:35:31,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:35:31,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:35:31,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:35:31,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:35:31,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:35:31,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:35:32,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:35:32,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:35:32,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:35:32,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:35:32,083 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:35:32,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2020-12-22 19:35:32,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/407882f87/e692441473f94642ac05c9fdf7fcc196/FLAGd834609c3 [2020-12-22 19:35:32,968 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:35:32,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2020-12-22 19:35:32,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/407882f87/e692441473f94642ac05c9fdf7fcc196/FLAGd834609c3 [2020-12-22 19:35:33,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/407882f87/e692441473f94642ac05c9fdf7fcc196 [2020-12-22 19:35:33,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:35:33,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:35:33,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:35:33,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:35:33,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:35:33,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e17b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33, skipping insertion in model container [2020-12-22 19:35:33,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:35:33,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:35:33,727 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/sll2c_update_all_reverse.i[24436,24449] [2020-12-22 19:35:33,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:35:33,741 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:35:33,793 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/sll2c_update_all_reverse.i[24436,24449] [2020-12-22 19:35:33,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:35:33,868 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:35:33,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33 WrapperNode [2020-12-22 19:35:33,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:35:33,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:35:33,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:35:33,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:35:33,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:35:33,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:35:33,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:35:33,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:35:33,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (1/1) ... [2020-12-22 19:35:33,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:35:33,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:35:33,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:35:33,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:35:33,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (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 19:35:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:35:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:35:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:35:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 19:35:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:35:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 19:35:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:35:34,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:35:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:35:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:35:34,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:35:34,783 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 19:35:34,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:35:34 BoogieIcfgContainer [2020-12-22 19:35:34,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:35:34,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:35:34,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:35:34,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:35:34,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:35:33" (1/3) ... [2020-12-22 19:35:34,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a7f913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:35:34, skipping insertion in model container [2020-12-22 19:35:34,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:35:33" (2/3) ... [2020-12-22 19:35:34,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a7f913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:35:34, skipping insertion in model container [2020-12-22 19:35:34,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:35:34" (3/3) ... [2020-12-22 19:35:34,803 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_update_all_reverse.i [2020-12-22 19:35:34,811 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:35:34,818 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 32 error locations. [2020-12-22 19:35:34,845 INFO L253 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2020-12-22 19:35:34,885 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:35:34,885 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:35:34,885 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:35:34,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:35:34,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:35:34,886 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:35:34,886 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:35:34,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:35:34,914 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-12-22 19:35:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:35:34,920 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:34,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:35:34,922 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:34,929 INFO L82 PathProgramCache]: Analyzing trace with hash 925702, now seen corresponding path program 1 times [2020-12-22 19:35:34,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:34,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644684807] [2020-12-22 19:35:34,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:35,151 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 19:35:35,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644684807] [2020-12-22 19:35:35,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:35,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:35:35,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110730426] [2020-12-22 19:35:35,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:35:35,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:35,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:35:35,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:35:35,180 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2020-12-22 19:35:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:35,368 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2020-12-22 19:35:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:35:35,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:35:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:35,381 INFO L225 Difference]: With dead ends: 104 [2020-12-22 19:35:35,381 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 19:35:35,383 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 19:35:35,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 19:35:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-12-22 19:35:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 19:35:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-12-22 19:35:35,427 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 4 [2020-12-22 19:35:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:35,428 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-12-22 19:35:35,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:35:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-12-22 19:35:35,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:35:35,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:35,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:35:35,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:35:35,430 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:35,431 INFO L82 PathProgramCache]: Analyzing trace with hash 925703, now seen corresponding path program 1 times [2020-12-22 19:35:35,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:35,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133793922] [2020-12-22 19:35:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:35,490 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 19:35:35,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133793922] [2020-12-22 19:35:35,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:35,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:35:35,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010706474] [2020-12-22 19:35:35,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:35:35,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:35,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:35:35,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:35:35,495 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 3 states. [2020-12-22 19:35:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:35,563 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-12-22 19:35:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:35:35,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:35:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:35,568 INFO L225 Difference]: With dead ends: 74 [2020-12-22 19:35:35,568 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 19:35:35,569 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 19:35:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 19:35:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-22 19:35:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 19:35:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-12-22 19:35:35,580 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 4 [2020-12-22 19:35:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:35,580 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-12-22 19:35:35,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:35:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-12-22 19:35:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 19:35:35,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:35,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:35:35,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:35:35,582 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2097994085, now seen corresponding path program 1 times [2020-12-22 19:35:35,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:35,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563422075] [2020-12-22 19:35:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:35,638 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 19:35:35,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563422075] [2020-12-22 19:35:35,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:35,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:35:35,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238606862] [2020-12-22 19:35:35,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:35:35,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:35,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:35:35,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:35:35,642 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 3 states. [2020-12-22 19:35:35,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:35,655 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2020-12-22 19:35:35,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:35:35,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-22 19:35:35,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:35,657 INFO L225 Difference]: With dead ends: 84 [2020-12-22 19:35:35,657 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 19:35:35,658 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 19:35:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 19:35:35,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2020-12-22 19:35:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 19:35:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2020-12-22 19:35:35,666 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 9 [2020-12-22 19:35:35,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:35,667 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2020-12-22 19:35:35,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:35:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2020-12-22 19:35:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:35:35,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:35,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:35:35,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:35:35,668 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:35,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:35,669 INFO L82 PathProgramCache]: Analyzing trace with hash 231455864, now seen corresponding path program 1 times [2020-12-22 19:35:35,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:35,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512108976] [2020-12-22 19:35:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:35,799 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 19:35:35,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512108976] [2020-12-22 19:35:35,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:35,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:35:35,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285432525] [2020-12-22 19:35:35,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:35:35,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:35,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:35:35,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:35:35,805 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 5 states. [2020-12-22 19:35:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:36,004 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-12-22 19:35:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:35:36,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 19:35:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:36,006 INFO L225 Difference]: With dead ends: 99 [2020-12-22 19:35:36,006 INFO L226 Difference]: Without dead ends: 99 [2020-12-22 19:35:36,007 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 19:35:36,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-22 19:35:36,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2020-12-22 19:35:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 19:35:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-12-22 19:35:36,031 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 14 [2020-12-22 19:35:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:36,031 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-12-22 19:35:36,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:35:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-12-22 19:35:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:35:36,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:36,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:35:36,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:35:36,033 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:36,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:36,035 INFO L82 PathProgramCache]: Analyzing trace with hash 231455865, now seen corresponding path program 1 times [2020-12-22 19:35:36,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:36,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985151605] [2020-12-22 19:35:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:36,178 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 19:35:36,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985151605] [2020-12-22 19:35:36,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:36,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:35:36,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554918743] [2020-12-22 19:35:36,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:35:36,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:36,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:35:36,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:35:36,181 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 5 states. [2020-12-22 19:35:36,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:36,327 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2020-12-22 19:35:36,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:35:36,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 19:35:36,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:36,332 INFO L225 Difference]: With dead ends: 78 [2020-12-22 19:35:36,332 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 19:35:36,333 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 19:35:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 19:35:36,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2020-12-22 19:35:36,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 19:35:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2020-12-22 19:35:36,347 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 14 [2020-12-22 19:35:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:36,348 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2020-12-22 19:35:36,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:35:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2020-12-22 19:35:36,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:35:36,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:36,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:35:36,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:35:36,351 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:36,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1879150547, now seen corresponding path program 1 times [2020-12-22 19:35:36,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:36,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645279833] [2020-12-22 19:35:36,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:36,536 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 19:35:36,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645279833] [2020-12-22 19:35:36,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:36,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:35:36,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778215888] [2020-12-22 19:35:36,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:35:36,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:36,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:35:36,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:35:36,540 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 6 states. [2020-12-22 19:35:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:36,714 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2020-12-22 19:35:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:35:36,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 19:35:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:36,719 INFO L225 Difference]: With dead ends: 92 [2020-12-22 19:35:36,719 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 19:35:36,719 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 19:35:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 19:35:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2020-12-22 19:35:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 19:35:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2020-12-22 19:35:36,724 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 17 [2020-12-22 19:35:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:36,727 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2020-12-22 19:35:36,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:35:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2020-12-22 19:35:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:35:36,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:36,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:35:36,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:35:36,729 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:36,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:36,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1879150548, now seen corresponding path program 1 times [2020-12-22 19:35:36,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:36,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157131508] [2020-12-22 19:35:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:36,891 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 19:35:36,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157131508] [2020-12-22 19:35:36,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:36,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:35:36,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095743035] [2020-12-22 19:35:36,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:35:36,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:36,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:35:36,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:35:36,895 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand 5 states. [2020-12-22 19:35:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:37,001 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-12-22 19:35:37,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:35:37,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-22 19:35:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:37,003 INFO L225 Difference]: With dead ends: 71 [2020-12-22 19:35:37,003 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 19:35:37,005 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 19:35:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 19:35:37,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-22 19:35:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-22 19:35:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-12-22 19:35:37,021 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 17 [2020-12-22 19:35:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:37,024 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-12-22 19:35:37,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:35:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-12-22 19:35:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:35:37,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:37,025 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 19:35:37,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:35:37,027 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:37,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:37,028 INFO L82 PathProgramCache]: Analyzing trace with hash -687020393, now seen corresponding path program 1 times [2020-12-22 19:35:37,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:37,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407131671] [2020-12-22 19:35:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:37,157 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 19:35:37,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407131671] [2020-12-22 19:35:37,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:37,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:35:37,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206692398] [2020-12-22 19:35:37,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:35:37,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:37,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:35:37,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:35:37,160 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 9 states. [2020-12-22 19:35:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:37,489 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2020-12-22 19:35:37,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:35:37,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-22 19:35:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:37,491 INFO L225 Difference]: With dead ends: 144 [2020-12-22 19:35:37,491 INFO L226 Difference]: Without dead ends: 144 [2020-12-22 19:35:37,491 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 19:35:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-22 19:35:37,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 74. [2020-12-22 19:35:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 19:35:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-12-22 19:35:37,495 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 22 [2020-12-22 19:35:37,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:37,496 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-12-22 19:35:37,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:35:37,496 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-12-22 19:35:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:35:37,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:37,497 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 19:35:37,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:35:37,497 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:37,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:37,498 INFO L82 PathProgramCache]: Analyzing trace with hash -687020392, now seen corresponding path program 1 times [2020-12-22 19:35:37,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:37,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004860652] [2020-12-22 19:35:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:37,564 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 19:35:37,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004860652] [2020-12-22 19:35:37,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:37,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:35:37,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559907040] [2020-12-22 19:35:37,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:35:37,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:37,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:35:37,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:35:37,567 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 5 states. [2020-12-22 19:35:37,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:37,611 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2020-12-22 19:35:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:35:37,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-22 19:35:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:37,613 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:35:37,613 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:35:37,614 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 19:35:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:35:37,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77. [2020-12-22 19:35:37,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 19:35:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-12-22 19:35:37,617 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 22 [2020-12-22 19:35:37,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:37,617 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-12-22 19:35:37,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:35:37,617 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-12-22 19:35:37,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:35:37,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:37,618 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 19:35:37,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:35:37,619 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:37,620 INFO L82 PathProgramCache]: Analyzing trace with hash -687020337, now seen corresponding path program 1 times [2020-12-22 19:35:37,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:37,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759430740] [2020-12-22 19:35:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:37,727 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 19:35:37,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759430740] [2020-12-22 19:35:37,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:37,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:35:37,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260873260] [2020-12-22 19:35:37,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:35:37,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:37,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:35:37,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:35:37,730 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 9 states. [2020-12-22 19:35:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:38,050 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2020-12-22 19:35:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:35:38,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-22 19:35:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:38,052 INFO L225 Difference]: With dead ends: 128 [2020-12-22 19:35:38,052 INFO L226 Difference]: Without dead ends: 128 [2020-12-22 19:35:38,053 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 19:35:38,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-12-22 19:35:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 77. [2020-12-22 19:35:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 19:35:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-12-22 19:35:38,056 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 22 [2020-12-22 19:35:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:38,057 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-12-22 19:35:38,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:35:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-12-22 19:35:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:35:38,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:38,058 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] [2020-12-22 19:35:38,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:35:38,059 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:38,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1503677429, now seen corresponding path program 1 times [2020-12-22 19:35:38,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:38,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69022597] [2020-12-22 19:35:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:38,264 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 19:35:38,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69022597] [2020-12-22 19:35:38,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350714523] [2020-12-22 19:35:38,266 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 19:35:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:38,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-22 19:35:38,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:35:38,427 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 19:35:38,428 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:38,431 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:38,431 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:35:38,432 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:35:38,489 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:38,490 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 19:35:38,513 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:35:38,532 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:38,550 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:38,553 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:35:38,553 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:18 [2020-12-22 19:35:38,675 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 19:35:38,676 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:38,683 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:38,684 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:35:38,684 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-12-22 19:35:38,781 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:38,782 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 51 [2020-12-22 19:35:38,790 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-22 19:35:38,791 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:35:38,792 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:38,800 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:38,802 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 19:35:38,803 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:34 [2020-12-22 19:35:39,065 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:39,066 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2020-12-22 19:35:39,068 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:39,073 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:39,076 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 19:35:39,076 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:41, output treesize:15 [2020-12-22 19:35:39,218 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 19:35:39,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:35:39,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2020-12-22 19:35:39,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931051488] [2020-12-22 19:35:39,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-22 19:35:39,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:39,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-22 19:35:39,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:35:39,221 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 27 states. [2020-12-22 19:35:39,917 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-12-22 19:35:40,092 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-12-22 19:35:40,266 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-12-22 19:35:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:40,758 INFO L93 Difference]: Finished difference Result 172 states and 186 transitions. [2020-12-22 19:35:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:35:40,759 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 25 [2020-12-22 19:35:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:40,760 INFO L225 Difference]: With dead ends: 172 [2020-12-22 19:35:40,760 INFO L226 Difference]: Without dead ends: 172 [2020-12-22 19:35:40,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=298, Invalid=1508, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 19:35:40,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-12-22 19:35:40,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 95. [2020-12-22 19:35:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 19:35:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2020-12-22 19:35:40,765 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 25 [2020-12-22 19:35:40,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:40,766 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2020-12-22 19:35:40,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-22 19:35:40,766 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2020-12-22 19:35:40,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:35:40,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:40,767 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] [2020-12-22 19:35:40,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 19:35:40,979 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:40,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:40,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1503677428, now seen corresponding path program 1 times [2020-12-22 19:35:40,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:40,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200614493] [2020-12-22 19:35:40,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:41,363 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 19:35:41,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200614493] [2020-12-22 19:35:41,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405287267] [2020-12-22 19:35:41,364 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 19:35:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:41,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-22 19:35:41,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:35:41,460 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 19:35:41,461 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:41,463 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:41,463 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:35:41,464 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:35:41,617 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:41,617 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 19:35:41,620 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:35:41,622 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:41,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:41,636 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 14 treesize of output 16 [2020-12-22 19:35:41,638 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:41,646 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:41,647 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:35:41,648 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:23 [2020-12-22 19:35:41,811 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 19:35:41,812 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:41,823 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:41,828 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 19:35:41,829 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:41,839 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:41,842 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 19:35:41,842 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:42, output treesize:35 [2020-12-22 19:35:42,014 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:42,015 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 68 [2020-12-22 19:35:42,025 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-22 19:35:42,026 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:35:42,028 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:42,043 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:42,055 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 42 treesize of output 33 [2020-12-22 19:35:42,057 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:42,072 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:42,076 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:35:42,076 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:77, output treesize:61 [2020-12-22 19:35:42,492 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:42,492 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 44 [2020-12-22 19:35:42,495 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:42,508 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:42,512 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 33 treesize of output 17 [2020-12-22 19:35:42,514 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:42,522 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:42,525 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:35:42,526 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:75, output treesize:20 [2020-12-22 19:35:42,673 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 19:35:42,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:35:42,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2020-12-22 19:35:42,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234948457] [2020-12-22 19:35:42,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-22 19:35:42,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:42,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-22 19:35:42,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=926, Unknown=0, NotChecked=0, Total=992 [2020-12-22 19:35:42,677 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 32 states. [2020-12-22 19:35:43,642 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-12-22 19:35:44,156 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-12-22 19:35:44,453 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2020-12-22 19:35:44,826 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 107 [2020-12-22 19:35:45,242 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 130 [2020-12-22 19:35:45,730 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 137 [2020-12-22 19:35:46,122 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 112 [2020-12-22 19:35:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:46,938 INFO L93 Difference]: Finished difference Result 191 states and 205 transitions. [2020-12-22 19:35:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 19:35:46,940 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 25 [2020-12-22 19:35:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:46,942 INFO L225 Difference]: With dead ends: 191 [2020-12-22 19:35:46,942 INFO L226 Difference]: Without dead ends: 191 [2020-12-22 19:35:46,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=346, Invalid=1910, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 19:35:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-22 19:35:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 92. [2020-12-22 19:35:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 19:35:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-12-22 19:35:46,953 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 25 [2020-12-22 19:35:46,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:46,954 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-12-22 19:35:46,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-22 19:35:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-12-22 19:35:46,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:35:46,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:46,955 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] [2020-12-22 19:35:47,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 19:35:47,170 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:47,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:47,172 INFO L82 PathProgramCache]: Analyzing trace with hash 456294935, now seen corresponding path program 2 times [2020-12-22 19:35:47,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:47,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114648450] [2020-12-22 19:35:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:47,228 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 19:35:47,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114648450] [2020-12-22 19:35:47,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:47,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:35:47,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357757783] [2020-12-22 19:35:47,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:35:47,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:47,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:35:47,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:35:47,231 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 6 states. [2020-12-22 19:35:47,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:47,273 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2020-12-22 19:35:47,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:35:47,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-22 19:35:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:47,274 INFO L225 Difference]: With dead ends: 90 [2020-12-22 19:35:47,274 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:35:47,275 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 19:35:47,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:35:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-12-22 19:35:47,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 19:35:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2020-12-22 19:35:47,279 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 28 [2020-12-22 19:35:47,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:47,279 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2020-12-22 19:35:47,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:35:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2020-12-22 19:35:47,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:35:47,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:47,281 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] [2020-12-22 19:35:47,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:35:47,281 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:47,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:47,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1407458907, now seen corresponding path program 1 times [2020-12-22 19:35:47,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:47,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607520346] [2020-12-22 19:35:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:47,400 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 19:35:47,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607520346] [2020-12-22 19:35:47,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:47,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:35:47,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312835836] [2020-12-22 19:35:47,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:35:47,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:47,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:35:47,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:35:47,409 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 9 states. [2020-12-22 19:35:47,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:47,666 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2020-12-22 19:35:47,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:35:47,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-12-22 19:35:47,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:47,668 INFO L225 Difference]: With dead ends: 115 [2020-12-22 19:35:47,668 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 19:35:47,669 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 19:35:47,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 19:35:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 93. [2020-12-22 19:35:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:35:47,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2020-12-22 19:35:47,672 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 31 [2020-12-22 19:35:47,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:47,672 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2020-12-22 19:35:47,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:35:47,673 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2020-12-22 19:35:47,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:35:47,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:47,674 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] [2020-12-22 19:35:47,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:35:47,674 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:47,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:47,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1407458906, now seen corresponding path program 1 times [2020-12-22 19:35:47,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:47,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354941856] [2020-12-22 19:35:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:47,734 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 19:35:47,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354941856] [2020-12-22 19:35:47,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899842332] [2020-12-22 19:35:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:35:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:47,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:35:47,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:35:47,909 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 19:35:47,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:35:47,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 19:35:47,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511091969] [2020-12-22 19:35:47,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:35:47,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:47,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:35:47,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:35:47,913 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand 8 states. [2020-12-22 19:35:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:47,947 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2020-12-22 19:35:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:35:47,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 19:35:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:47,949 INFO L225 Difference]: With dead ends: 120 [2020-12-22 19:35:47,949 INFO L226 Difference]: Without dead ends: 120 [2020-12-22 19:35:47,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 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 19:35:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-22 19:35:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2020-12-22 19:35:47,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-22 19:35:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2020-12-22 19:35:47,956 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 31 [2020-12-22 19:35:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:47,956 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2020-12-22 19:35:47,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:35:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2020-12-22 19:35:47,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:35:47,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:47,958 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] [2020-12-22 19:35:48,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 19:35:48,177 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:48,178 INFO L82 PathProgramCache]: Analyzing trace with hash -640737917, now seen corresponding path program 1 times [2020-12-22 19:35:48,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:48,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438789969] [2020-12-22 19:35:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:48,241 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 19:35:48,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438789969] [2020-12-22 19:35:48,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165862620] [2020-12-22 19:35:48,242 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 19:35:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:48,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:35:48,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:35:48,374 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 19:35:48,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:35:48,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 19:35:48,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342883716] [2020-12-22 19:35:48,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:35:48,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:48,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:35:48,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:35:48,379 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand 9 states. [2020-12-22 19:35:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:48,429 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2020-12-22 19:35:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:35:48,430 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-22 19:35:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:48,431 INFO L225 Difference]: With dead ends: 114 [2020-12-22 19:35:48,431 INFO L226 Difference]: Without dead ends: 114 [2020-12-22 19:35:48,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 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 19:35:48,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-22 19:35:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2020-12-22 19:35:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 19:35:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2020-12-22 19:35:48,435 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 32 [2020-12-22 19:35:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:48,435 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2020-12-22 19:35:48,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:35:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2020-12-22 19:35:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 19:35:48,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:48,439 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 19:35:48,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:35:48,654 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:48,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:48,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1641689479, now seen corresponding path program 3 times [2020-12-22 19:35:48,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:48,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601237879] [2020-12-22 19:35:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:35:48,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601237879] [2020-12-22 19:35:48,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850982159] [2020-12-22 19:35:48,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 19:35:48,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 19:35:48,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:35:48,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:35:48,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:35:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:35:48,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:35:48,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-12-22 19:35:48,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427666247] [2020-12-22 19:35:48,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:35:48,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:48,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:35:48,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:35:48,857 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand 4 states. [2020-12-22 19:35:48,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:48,864 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2020-12-22 19:35:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:35:48,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 19:35:48,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:48,867 INFO L225 Difference]: With dead ends: 89 [2020-12-22 19:35:48,867 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 19:35:48,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 19:35:48,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 19:35:48,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-22 19:35:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 19:35:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2020-12-22 19:35:48,871 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 33 [2020-12-22 19:35:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:48,872 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2020-12-22 19:35:48,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:35:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2020-12-22 19:35:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:35:48,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:48,873 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] [2020-12-22 19:35:49,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 19:35:49,089 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:49,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:49,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1587969722, now seen corresponding path program 2 times [2020-12-22 19:35:49,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:49,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29671512] [2020-12-22 19:35:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:49,149 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 19:35:49,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29671512] [2020-12-22 19:35:49,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:49,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:35:49,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277730] [2020-12-22 19:35:49,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:35:49,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:49,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:35:49,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:35:49,152 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand 5 states. [2020-12-22 19:35:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:49,189 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2020-12-22 19:35:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:35:49,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-12-22 19:35:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:49,190 INFO L225 Difference]: With dead ends: 94 [2020-12-22 19:35:49,190 INFO L226 Difference]: Without dead ends: 94 [2020-12-22 19:35:49,192 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 19:35:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-22 19:35:49,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-12-22 19:35:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:35:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-12-22 19:35:49,195 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 35 [2020-12-22 19:35:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:49,195 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-12-22 19:35:49,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:35:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-12-22 19:35:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:35:49,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:49,196 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] [2020-12-22 19:35:49,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:35:49,196 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1587969777, now seen corresponding path program 1 times [2020-12-22 19:35:49,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:49,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001039196] [2020-12-22 19:35:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:49,351 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 19:35:49,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001039196] [2020-12-22 19:35:49,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:35:49,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:35:49,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525129151] [2020-12-22 19:35:49,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:35:49,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:49,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:35:49,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:35:49,357 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 9 states. [2020-12-22 19:35:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:49,645 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2020-12-22 19:35:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:35:49,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-12-22 19:35:49,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:49,647 INFO L225 Difference]: With dead ends: 123 [2020-12-22 19:35:49,647 INFO L226 Difference]: Without dead ends: 123 [2020-12-22 19:35:49,647 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 19:35:49,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-22 19:35:49,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2020-12-22 19:35:49,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:35:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2020-12-22 19:35:49,653 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 35 [2020-12-22 19:35:49,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:49,653 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2020-12-22 19:35:49,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:35:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2020-12-22 19:35:49,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 19:35:49,654 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:49,654 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] [2020-12-22 19:35:49,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 19:35:49,655 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:49,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1857088373, now seen corresponding path program 1 times [2020-12-22 19:35:49,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:49,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018769072] [2020-12-22 19:35:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:50,075 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 19:35:50,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018769072] [2020-12-22 19:35:50,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495015950] [2020-12-22 19:35:50,076 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 19:35:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:50,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 71 conjunts are in the unsatisfiable core [2020-12-22 19:35:50,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:35:50,175 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 19:35:50,176 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:50,178 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:50,178 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:35:50,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:35:50,208 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:50,209 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 19:35:50,211 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:35:50,213 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:50,220 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:50,221 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:35:50,222 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:21 [2020-12-22 19:35:50,422 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 19:35:50,423 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:50,434 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:50,436 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:35:50,436 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-22 19:35:50,568 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:50,568 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 51 [2020-12-22 19:35:50,574 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-22 19:35:50,574 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:35:50,580 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:50,591 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:50,593 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 19:35:50,593 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2020-12-22 19:35:51,091 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:51,092 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 60 treesize of output 117 [2020-12-22 19:35:51,097 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-22 19:35:51,097 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:35:51,099 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:51,124 INFO L625 ElimStorePlain]: treesize reduction 28, result has 62.2 percent of original size [2020-12-22 19:35:51,126 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 19:35:51,126 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:71, output treesize:29 [2020-12-22 19:35:51,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:35:51,266 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 37 treesize of output 17 [2020-12-22 19:35:51,267 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:51,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:51,279 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 19:35:51,279 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:51, output treesize:29 [2020-12-22 19:35:51,368 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:35:51,369 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-22 19:35:51,370 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:51,388 INFO L625 ElimStorePlain]: treesize reduction 3, result has 88.9 percent of original size [2020-12-22 19:35:51,392 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 19:35:51,392 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:42, output treesize:15 [2020-12-22 19:35:51,530 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 19:35:51,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:35:51,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 38 [2020-12-22 19:35:51,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989583206] [2020-12-22 19:35:51,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-22 19:35:51,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:51,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-22 19:35:51,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1345, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 19:35:51,535 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand 39 states. [2020-12-22 19:35:52,276 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-22 19:35:52,469 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-12-22 19:35:52,694 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-12-22 19:35:52,929 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-12-22 19:35:53,159 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-12-22 19:35:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:35:54,007 INFO L93 Difference]: Finished difference Result 151 states and 168 transitions. [2020-12-22 19:35:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 19:35:54,008 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 38 [2020-12-22 19:35:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:35:54,009 INFO L225 Difference]: With dead ends: 151 [2020-12-22 19:35:54,010 INFO L226 Difference]: Without dead ends: 151 [2020-12-22 19:35:54,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=408, Invalid=2672, Unknown=0, NotChecked=0, Total=3080 [2020-12-22 19:35:54,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-22 19:35:54,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 96. [2020-12-22 19:35:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 19:35:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2020-12-22 19:35:54,016 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 38 [2020-12-22 19:35:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:35:54,016 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2020-12-22 19:35:54,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-22 19:35:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2020-12-22 19:35:54,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 19:35:54,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:35:54,017 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] [2020-12-22 19:35:54,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:35:54,232 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:35:54,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:35:54,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1857088372, now seen corresponding path program 1 times [2020-12-22 19:35:54,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:35:54,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074489530] [2020-12-22 19:35:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:35:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:54,840 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 19:35:54,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074489530] [2020-12-22 19:35:54,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487710930] [2020-12-22 19:35:54,840 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 19:35:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:35:54,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 87 conjunts are in the unsatisfiable core [2020-12-22 19:35:54,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:35:54,937 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 19:35:54,938 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:54,939 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:54,940 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:35:54,940 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:35:55,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:35:55,104 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 14 treesize of output 16 [2020-12-22 19:35:55,106 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:55,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:55,126 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:55,126 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 19:35:55,128 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:35:55,134 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:55,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:55,142 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:35:55,142 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:23 [2020-12-22 19:35:55,390 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 19:35:55,390 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:55,405 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:55,409 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 19:35:55,410 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:55,423 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:55,424 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 19:35:55,425 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:45, output treesize:34 [2020-12-22 19:35:55,582 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 30 [2020-12-22 19:35:55,584 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:55,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:55,612 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:55,613 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 64 [2020-12-22 19:35:55,618 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-22 19:35:55,619 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:35:55,620 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:55,633 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:55,634 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:35:55,634 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:73, output treesize:57 [2020-12-22 19:35:56,311 INFO L348 Elim1Store]: treesize reduction 29, result has 37.0 percent of original size [2020-12-22 19:35:56,312 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 65 treesize of output 42 [2020-12-22 19:35:56,313 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:56,341 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:56,386 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:56,386 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 83 treesize of output 136 [2020-12-22 19:35:56,391 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2020-12-22 19:35:56,392 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:35:56,394 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:56,451 INFO L625 ElimStorePlain]: treesize reduction 28, result has 74.3 percent of original size [2020-12-22 19:35:56,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:35:56,454 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:35:56,456 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 19:35:56,457 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:131, output treesize:44 [2020-12-22 19:35:56,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:35:56,669 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 43 treesize of output 23 [2020-12-22 19:35:56,670 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:56,687 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:56,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:35:56,692 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 44 treesize of output 24 [2020-12-22 19:35:56,693 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:56,705 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:56,707 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 19:35:56,707 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:85, output treesize:44 [2020-12-22 19:35:56,812 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 31 treesize of output 19 [2020-12-22 19:35:56,814 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:56,827 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:56,832 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 28 treesize of output 16 [2020-12-22 19:35:56,833 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:35:56,845 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:35:56,848 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 19:35:56,848 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:58, output treesize:22 [2020-12-22 19:35:57,053 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 19:35:57,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:35:57,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2020-12-22 19:35:57,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914492474] [2020-12-22 19:35:57,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-22 19:35:57,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:35:57,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-22 19:35:57,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1783, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 19:35:57,059 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand 44 states. [2020-12-22 19:35:58,135 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-12-22 19:35:58,356 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-12-22 19:35:58,652 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2020-12-22 19:35:59,044 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 113 [2020-12-22 19:35:59,532 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 121 [2020-12-22 19:36:00,038 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 124 [2020-12-22 19:36:00,518 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 118 [2020-12-22 19:36:01,140 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2020-12-22 19:36:01,384 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2020-12-22 19:36:02,336 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2020-12-22 19:36:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:02,754 INFO L93 Difference]: Finished difference Result 229 states and 247 transitions. [2020-12-22 19:36:02,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:36:02,754 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 38 [2020-12-22 19:36:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:02,756 INFO L225 Difference]: With dead ends: 229 [2020-12-22 19:36:02,756 INFO L226 Difference]: Without dead ends: 229 [2020-12-22 19:36:02,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=536, Invalid=3754, Unknown=0, NotChecked=0, Total=4290 [2020-12-22 19:36:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-12-22 19:36:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 95. [2020-12-22 19:36:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 19:36:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2020-12-22 19:36:02,762 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 38 [2020-12-22 19:36:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:02,763 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2020-12-22 19:36:02,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-22 19:36:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2020-12-22 19:36:02,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 19:36:02,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:02,764 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] [2020-12-22 19:36:02,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:36:02,968 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:02,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1044261511, now seen corresponding path program 2 times [2020-12-22 19:36:02,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:02,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117637777] [2020-12-22 19:36:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:03,030 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 19:36:03,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117637777] [2020-12-22 19:36:03,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:36:03,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:36:03,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075396380] [2020-12-22 19:36:03,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:36:03,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:03,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:36:03,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:36:03,032 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand 6 states. [2020-12-22 19:36:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:03,066 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-12-22 19:36:03,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:36:03,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-12-22 19:36:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:03,067 INFO L225 Difference]: With dead ends: 81 [2020-12-22 19:36:03,067 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 19:36:03,068 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 19:36:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 19:36:03,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-22 19:36:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 19:36:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2020-12-22 19:36:03,070 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 41 [2020-12-22 19:36:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:03,070 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2020-12-22 19:36:03,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:36:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2020-12-22 19:36:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 19:36:03,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:03,071 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] [2020-12-22 19:36:03,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 19:36:03,071 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:03,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:03,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1937061213, now seen corresponding path program 1 times [2020-12-22 19:36:03,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:03,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547827821] [2020-12-22 19:36:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:04,024 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 19:36:04,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547827821] [2020-12-22 19:36:04,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148968429] [2020-12-22 19:36:04,024 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 19:36:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:04,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-22 19:36:04,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:36:04,274 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:04,275 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 19:36:04,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:04,278 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:04,280 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:04,286 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:04,286 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:04,287 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2020-12-22 19:36:04,523 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 19:36:04,524 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:04,531 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:04,532 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:04,532 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-12-22 19:36:04,687 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:04,687 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 46 [2020-12-22 19:36:04,690 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 2, 1] term [2020-12-22 19:36:04,690 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:36:04,691 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:04,697 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:04,700 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 19:36:04,700 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:26 [2020-12-22 19:36:05,327 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_int_17|], 2=[|v_#memory_$Pointer$.offset_25|], 6=[|v_#memory_$Pointer$.base_33|]} [2020-12-22 19:36:05,344 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 19:36:05,345 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:05,363 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:05,367 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 82 [2020-12-22 19:36:05,369 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:05,383 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:05,422 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:05,423 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 80 treesize of output 161 [2020-12-22 19:36:05,427 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-22 19:36:05,427 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:36:05,430 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:05,458 INFO L625 ElimStorePlain]: treesize reduction 36, result has 61.3 percent of original size [2020-12-22 19:36:05,460 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 19:36:05,460 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:133, output treesize:36 [2020-12-22 19:36:05,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:36:05,699 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 41 treesize of output 25 [2020-12-22 19:36:05,700 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:05,717 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:05,722 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 19:36:05,724 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:05,743 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:05,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:36:05,749 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2020-12-22 19:36:05,750 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:05,762 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:05,765 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:05,765 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:90, output treesize:36 [2020-12-22 19:36:06,046 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 64 treesize of output 48 [2020-12-22 19:36:06,048 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:06,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:06,064 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 48 treesize of output 36 [2020-12-22 19:36:06,067 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:06,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:06,082 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 19:36:06,082 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:77, output treesize:33 [2020-12-22 19:36:06,317 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 42 treesize of output 24 [2020-12-22 19:36:06,318 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:06,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:06,326 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 19:36:06,326 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:21 [2020-12-22 19:36:06,672 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 19:36:06,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:36:06,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 51 [2020-12-22 19:36:06,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218742739] [2020-12-22 19:36:06,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-12-22 19:36:06,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:06,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-12-22 19:36:06,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2437, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 19:36:06,675 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand 51 states. [2020-12-22 19:36:08,297 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-12-22 19:36:08,613 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2020-12-22 19:36:08,990 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 95 [2020-12-22 19:36:09,382 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 99 [2020-12-22 19:36:09,747 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 95 [2020-12-22 19:36:10,101 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2020-12-22 19:36:10,396 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-12-22 19:36:10,700 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 82 [2020-12-22 19:36:11,128 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2020-12-22 19:36:11,544 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 113 [2020-12-22 19:36:12,107 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 135 [2020-12-22 19:36:12,513 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 101 [2020-12-22 19:36:12,932 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 109 [2020-12-22 19:36:13,357 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 109 [2020-12-22 19:36:13,833 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 134 [2020-12-22 19:36:14,278 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 103 [2020-12-22 19:36:14,913 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2020-12-22 19:36:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:15,019 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2020-12-22 19:36:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 19:36:15,020 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 42 [2020-12-22 19:36:15,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:15,021 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:36:15,021 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:36:15,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=655, Invalid=5045, Unknown=0, NotChecked=0, Total=5700 [2020-12-22 19:36:15,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:36:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2020-12-22 19:36:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 19:36:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-12-22 19:36:15,027 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 42 [2020-12-22 19:36:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:15,027 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-12-22 19:36:15,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-12-22 19:36:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-12-22 19:36:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 19:36:15,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:15,028 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] [2020-12-22 19:36:15,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 19:36:15,240 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:15,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:15,241 INFO L82 PathProgramCache]: Analyzing trace with hash -372113487, now seen corresponding path program 1 times [2020-12-22 19:36:15,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:15,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155454582] [2020-12-22 19:36:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:15,581 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 19:36:15,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155454582] [2020-12-22 19:36:15,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517921359] [2020-12-22 19:36:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 19:36:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:15,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-22 19:36:15,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:36:15,792 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 19:36:15,793 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:15,802 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:15,803 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 19:36:15,803 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:28 [2020-12-22 19:36:16,018 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 52 treesize of output 28 [2020-12-22 19:36:16,024 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:16,031 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:16,032 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 19:36:16,033 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:61, output treesize:34 [2020-12-22 19:36:16,199 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 19:36:16,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:36:16,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 29 [2020-12-22 19:36:16,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25753539] [2020-12-22 19:36:16,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-22 19:36:16,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:16,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-22 19:36:16,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2020-12-22 19:36:16,201 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 29 states. [2020-12-22 19:36:17,224 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-12-22 19:36:17,407 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-12-22 19:36:17,608 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-12-22 19:36:17,827 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-12-22 19:36:18,048 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-12-22 19:36:18,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:18,124 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2020-12-22 19:36:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 19:36:18,125 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 49 [2020-12-22 19:36:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:18,125 INFO L225 Difference]: With dead ends: 116 [2020-12-22 19:36:18,125 INFO L226 Difference]: Without dead ends: 116 [2020-12-22 19:36:18,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=459, Invalid=1521, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 19:36:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-22 19:36:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 85. [2020-12-22 19:36:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-22 19:36:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-12-22 19:36:18,130 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 49 [2020-12-22 19:36:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:18,131 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-12-22 19:36:18,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-22 19:36:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-12-22 19:36:18,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 19:36:18,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:18,132 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] [2020-12-22 19:36:18,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:36:18,333 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:18,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1312885641, now seen corresponding path program 2 times [2020-12-22 19:36:18,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:18,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404103204] [2020-12-22 19:36:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:18,406 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 19:36:18,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404103204] [2020-12-22 19:36:18,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504632330] [2020-12-22 19:36:18,407 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 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 19:36:18,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:36:18,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:36:18,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:36:18,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:36:18,586 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 19:36:18,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:36:18,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 19:36:18,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855548120] [2020-12-22 19:36:18,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:36:18,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:18,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:36:18,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:36:18,588 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 9 states. [2020-12-22 19:36:18,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:18,647 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-12-22 19:36:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:36:18,648 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-12-22 19:36:18,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:18,648 INFO L225 Difference]: With dead ends: 76 [2020-12-22 19:36:18,648 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 19:36:18,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 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 19:36:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 19:36:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-22 19:36:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 19:36:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-12-22 19:36:18,651 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 52 [2020-12-22 19:36:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:18,652 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-12-22 19:36:18,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:36:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-12-22 19:36:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 19:36:18,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:18,653 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] [2020-12-22 19:36:18,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:36:18,867 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:18,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:18,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1382682905, now seen corresponding path program 1 times [2020-12-22 19:36:18,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:18,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114996603] [2020-12-22 19:36:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:18,958 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 19:36:18,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114996603] [2020-12-22 19:36:18,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:36:18,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:36:18,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019874656] [2020-12-22 19:36:18,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:36:18,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:18,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:36:18,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:36:18,960 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 9 states. [2020-12-22 19:36:19,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:19,193 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2020-12-22 19:36:19,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:36:19,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-12-22 19:36:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:19,195 INFO L225 Difference]: With dead ends: 94 [2020-12-22 19:36:19,195 INFO L226 Difference]: Without dead ends: 94 [2020-12-22 19:36:19,195 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 19:36:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-22 19:36:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2020-12-22 19:36:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-22 19:36:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2020-12-22 19:36:19,198 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 53 [2020-12-22 19:36:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:19,198 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2020-12-22 19:36:19,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:36:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2020-12-22 19:36:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 19:36:19,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:19,199 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] [2020-12-22 19:36:19,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 19:36:19,200 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:19,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1382682904, now seen corresponding path program 1 times [2020-12-22 19:36:19,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:19,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822594272] [2020-12-22 19:36:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:19,327 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 19:36:19,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822594272] [2020-12-22 19:36:19,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:36:19,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:36:19,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860412455] [2020-12-22 19:36:19,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:36:19,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:19,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:36:19,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:36:19,329 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 9 states. [2020-12-22 19:36:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:19,606 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-12-22 19:36:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:36:19,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-12-22 19:36:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:19,608 INFO L225 Difference]: With dead ends: 77 [2020-12-22 19:36:19,608 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 19:36:19,609 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 19:36:19,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 19:36:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-12-22 19:36:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 19:36:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-12-22 19:36:19,612 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 53 [2020-12-22 19:36:19,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:19,612 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-12-22 19:36:19,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:36:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-12-22 19:36:19,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 19:36:19,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:19,613 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] [2020-12-22 19:36:19,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 19:36:19,613 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:19,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:19,614 INFO L82 PathProgramCache]: Analyzing trace with hash 86536808, now seen corresponding path program 1 times [2020-12-22 19:36:19,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:19,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560416998] [2020-12-22 19:36:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:19,701 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 19:36:19,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560416998] [2020-12-22 19:36:19,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:36:19,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 19:36:19,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587629058] [2020-12-22 19:36:19,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:36:19,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:19,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:36:19,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:36:19,704 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 10 states. [2020-12-22 19:36:19,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:19,897 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2020-12-22 19:36:19,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:36:19,898 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-12-22 19:36:19,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:19,899 INFO L225 Difference]: With dead ends: 77 [2020-12-22 19:36:19,899 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 19:36:19,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:36:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 19:36:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-12-22 19:36:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 19:36:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-12-22 19:36:19,903 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 54 [2020-12-22 19:36:19,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:19,904 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-12-22 19:36:19,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:36:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-12-22 19:36:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 19:36:19,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:19,905 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] [2020-12-22 19:36:19,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 19:36:19,905 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:19,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:19,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1525020614, now seen corresponding path program 1 times [2020-12-22 19:36:19,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:19,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157382490] [2020-12-22 19:36:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:20,003 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 19:36:20,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157382490] [2020-12-22 19:36:20,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733029514] [2020-12-22 19:36:20,004 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 19:36:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:20,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-22 19:36:20,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:36:20,378 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 19:36:20,380 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:20,385 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:20,386 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 19:36:20,387 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:5 [2020-12-22 19:36:20,399 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 19:36:20,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:36:20,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 19 [2020-12-22 19:36:20,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662501365] [2020-12-22 19:36:20,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 19:36:20,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:20,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 19:36:20,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:36:20,401 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 20 states. [2020-12-22 19:36:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:21,169 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2020-12-22 19:36:21,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 19:36:21,170 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2020-12-22 19:36:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:21,171 INFO L225 Difference]: With dead ends: 85 [2020-12-22 19:36:21,171 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 19:36:21,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 19:36:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 19:36:21,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2020-12-22 19:36:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 19:36:21,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-12-22 19:36:21,175 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 56 [2020-12-22 19:36:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:21,175 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-12-22 19:36:21,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 19:36:21,176 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-12-22 19:36:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 19:36:21,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:21,176 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] [2020-12-22 19:36:21,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 19:36:21,380 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:21,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:21,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1525020615, now seen corresponding path program 1 times [2020-12-22 19:36:21,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:21,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965353824] [2020-12-22 19:36:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:22,264 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 19:36:22,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965353824] [2020-12-22 19:36:22,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965211402] [2020-12-22 19:36:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:36:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:22,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 91 conjunts are in the unsatisfiable core [2020-12-22 19:36:22,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:36:22,398 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 19:36:22,399 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:22,403 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:22,403 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:22,404 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:36:22,613 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:22,613 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 19:36:22,614 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:22,617 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:22,626 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:22,627 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:22,627 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:17 [2020-12-22 19:36:22,795 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 19:36:22,796 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:22,808 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:22,812 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 19:36:22,813 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:22,823 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:22,825 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 19:36:22,825 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:29 [2020-12-22 19:36:22,970 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 34 treesize of output 25 [2020-12-22 19:36:22,972 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:22,989 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:23,011 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:23,011 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 60 [2020-12-22 19:36:23,014 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-22 19:36:23,014 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:36:23,015 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:23,033 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:23,035 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:36:23,035 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:78, output treesize:62 [2020-12-22 19:36:23,745 INFO L348 Elim1Store]: treesize reduction 29, result has 37.0 percent of original size [2020-12-22 19:36:23,746 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 57 treesize of output 34 [2020-12-22 19:36:23,748 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:23,775 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:23,818 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:23,818 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 79 treesize of output 132 [2020-12-22 19:36:23,822 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2020-12-22 19:36:23,822 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:36:23,824 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:23,877 INFO L625 ElimStorePlain]: treesize reduction 28, result has 72.5 percent of original size [2020-12-22 19:36:23,879 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-22 19:36:23,879 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:23,881 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 19:36:23,882 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:124, output treesize:35 [2020-12-22 19:36:24,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:36:24,056 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2020-12-22 19:36:24,057 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:24,074 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:24,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:36:24,080 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 37 treesize of output 17 [2020-12-22 19:36:24,081 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:24,093 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:24,094 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 19:36:24,095 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:76, output treesize:35 [2020-12-22 19:36:24,213 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-22 19:36:24,214 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:24,230 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:24,234 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 22 treesize of output 10 [2020-12-22 19:36:24,235 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:24,246 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:24,248 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 19:36:24,249 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:12 [2020-12-22 19:36:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 19:36:24,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:36:24,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21] total 46 [2020-12-22 19:36:24,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689359541] [2020-12-22 19:36:24,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-12-22 19:36:24,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:24,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-12-22 19:36:24,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2024, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 19:36:24,415 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 47 states. [2020-12-22 19:36:25,463 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-12-22 19:36:25,733 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-12-22 19:36:26,099 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 111 [2020-12-22 19:36:26,516 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 118 [2020-12-22 19:36:26,933 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 120 [2020-12-22 19:36:27,327 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 113 [2020-12-22 19:36:28,430 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-12-22 19:36:28,669 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-12-22 19:36:28,895 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-12-22 19:36:29,219 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-12-22 19:36:29,479 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-12-22 19:36:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:29,575 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-12-22 19:36:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 19:36:29,576 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 56 [2020-12-22 19:36:29,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:29,576 INFO L225 Difference]: With dead ends: 86 [2020-12-22 19:36:29,576 INFO L226 Difference]: Without dead ends: 86 [2020-12-22 19:36:29,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=597, Invalid=4233, Unknown=0, NotChecked=0, Total=4830 [2020-12-22 19:36:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-22 19:36:29,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2020-12-22 19:36:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-22 19:36:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-12-22 19:36:29,580 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 56 [2020-12-22 19:36:29,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:29,581 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-12-22 19:36:29,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-12-22 19:36:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-12-22 19:36:29,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 19:36:29,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:29,582 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] [2020-12-22 19:36:29,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:36:29,795 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:29,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:29,796 INFO L82 PathProgramCache]: Analyzing trace with hash 30997422, now seen corresponding path program 1 times [2020-12-22 19:36:29,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:29,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475120353] [2020-12-22 19:36:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:29,884 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 19:36:29,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475120353] [2020-12-22 19:36:29,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:36:29,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:36:29,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603056907] [2020-12-22 19:36:29,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:36:29,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:29,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:36:29,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:36:29,886 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 9 states. [2020-12-22 19:36:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:30,082 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2020-12-22 19:36:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:36:30,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-12-22 19:36:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:30,083 INFO L225 Difference]: With dead ends: 78 [2020-12-22 19:36:30,083 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 19:36:30,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:36:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 19:36:30,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-22 19:36:30,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 19:36:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-12-22 19:36:30,087 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 57 [2020-12-22 19:36:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:30,087 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-12-22 19:36:30,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:36:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-12-22 19:36:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 19:36:30,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:30,088 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 19:36:30,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 19:36:30,088 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:30,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:30,089 INFO L82 PathProgramCache]: Analyzing trace with hash -274825197, now seen corresponding path program 1 times [2020-12-22 19:36:30,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:30,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352209054] [2020-12-22 19:36:30,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:36:30,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352209054] [2020-12-22 19:36:30,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922707916] [2020-12-22 19:36:30,628 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 19:36:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:30,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 83 conjunts are in the unsatisfiable core [2020-12-22 19:36:30,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:36:30,738 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 19:36:30,739 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:30,744 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:30,745 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:30,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:36:30,773 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:30,773 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 19:36:30,775 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:30,777 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:30,784 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:30,785 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:30,785 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:16 [2020-12-22 19:36:30,930 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 19:36:30,933 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:30,941 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:30,942 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:30,942 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2020-12-22 19:36:31,055 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:31,055 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 51 [2020-12-22 19:36:31,057 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-22 19:36:31,057 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:36:31,058 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:31,066 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:31,067 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 19:36:31,068 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:32 [2020-12-22 19:36:31,530 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:31,531 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 60 treesize of output 117 [2020-12-22 19:36:31,534 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-22 19:36:31,535 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:36:31,536 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:31,561 INFO L625 ElimStorePlain]: treesize reduction 28, result has 57.6 percent of original size [2020-12-22 19:36:31,563 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 19:36:31,564 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:63, output treesize:21 [2020-12-22 19:36:31,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:36:31,700 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 37 treesize of output 17 [2020-12-22 19:36:31,702 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:31,710 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:31,711 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 19:36:31,712 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:21 [2020-12-22 19:36:31,969 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-22 19:36:31,971 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:36:31,987 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:31,990 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 19:36:31,990 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:5 [2020-12-22 19:36:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:36:32,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:36:32,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 39 [2020-12-22 19:36:32,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815410317] [2020-12-22 19:36:32,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-22 19:36:32,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:32,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-22 19:36:32,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1443, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 19:36:32,073 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 40 states. [2020-12-22 19:36:33,302 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-12-22 19:36:33,530 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2020-12-22 19:36:33,792 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2020-12-22 19:36:34,067 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2020-12-22 19:36:34,321 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2020-12-22 19:36:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:36,100 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-12-22 19:36:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 19:36:36,101 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 59 [2020-12-22 19:36:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:36,102 INFO L225 Difference]: With dead ends: 83 [2020-12-22 19:36:36,102 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 19:36:36,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=501, Invalid=3405, Unknown=0, NotChecked=0, Total=3906 [2020-12-22 19:36:36,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 19:36:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2020-12-22 19:36:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-22 19:36:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-12-22 19:36:36,106 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 59 [2020-12-22 19:36:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:36,107 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-12-22 19:36:36,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-22 19:36:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-12-22 19:36:36,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 19:36:36,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:36,108 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] [2020-12-22 19:36:36,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-12-22 19:36:36,320 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:36,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:36,321 INFO L82 PathProgramCache]: Analyzing trace with hash 26424924, now seen corresponding path program 1 times [2020-12-22 19:36:36,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:36,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002458786] [2020-12-22 19:36:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:36,747 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:36:36,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002458786] [2020-12-22 19:36:36,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366963462] [2020-12-22 19:36:36,748 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 19:36:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:36,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 77 conjunts are in the unsatisfiable core [2020-12-22 19:36:36,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:36:36,862 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 19:36:36,863 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:36,864 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:36,865 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:36,865 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:36:36,907 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:36,907 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 19:36:36,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:36,910 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:36,915 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:36,916 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:36,916 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2020-12-22 19:36:37,069 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 19:36:37,070 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:37,077 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:37,078 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:37,078 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-12-22 19:36:37,178 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:37,178 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 46 [2020-12-22 19:36:37,180 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 2, 1] term [2020-12-22 19:36:37,181 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:36:37,182 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:37,188 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:37,189 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 19:36:37,190 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:26 [2020-12-22 19:36:37,628 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:37,628 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 51 treesize of output 112 [2020-12-22 19:36:37,631 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-22 19:36:37,631 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:36:37,633 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:37,657 INFO L625 ElimStorePlain]: treesize reduction 28, result has 53.3 percent of original size [2020-12-22 19:36:37,659 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 19:36:37,659 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:15 [2020-12-22 19:36:37,731 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2020-12-22 19:36:37,737 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:37,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:37,739 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:37,739 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:8 [2020-12-22 19:36:37,838 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:37,838 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 16 treesize of output 16 [2020-12-22 19:36:37,840 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:37,842 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:36:37,848 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:37,849 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:37,850 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:13 [2020-12-22 19:36:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:36:38,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:36:38,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 40 [2020-12-22 19:36:38,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867998572] [2020-12-22 19:36:38,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-22 19:36:38,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:38,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-22 19:36:38,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1437, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 19:36:38,035 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 40 states. [2020-12-22 19:36:39,068 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-22 19:36:39,261 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-12-22 19:36:39,464 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-22 19:36:39,667 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-22 19:36:40,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:40,459 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2020-12-22 19:36:40,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:36:40,460 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 60 [2020-12-22 19:36:40,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:40,462 INFO L225 Difference]: With dead ends: 77 [2020-12-22 19:36:40,462 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 19:36:40,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=410, Invalid=3012, Unknown=0, NotChecked=0, Total=3422 [2020-12-22 19:36:40,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 19:36:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-12-22 19:36:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 19:36:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-12-22 19:36:40,466 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 60 [2020-12-22 19:36:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:40,466 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-12-22 19:36:40,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-22 19:36:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-12-22 19:36:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 19:36:40,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:40,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:36:40,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:36:40,669 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:40,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1109592277, now seen corresponding path program 1 times [2020-12-22 19:36:40,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:40,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780112539] [2020-12-22 19:36:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:36:41,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780112539] [2020-12-22 19:36:41,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711039970] [2020-12-22 19:36:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:36:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:41,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 104 conjunts are in the unsatisfiable core [2020-12-22 19:36:41,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:36:41,698 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 19:36:41,698 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:41,700 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:41,700 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:41,701 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:36:41,836 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:41,836 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 19:36:41,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:41,840 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:41,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:41,848 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:41,848 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-12-22 19:36:42,028 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 19:36:42,029 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,039 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,045 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 19:36:42,046 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,053 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,054 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,055 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2020-12-22 19:36:42,175 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 54 treesize of output 44 [2020-12-22 19:36:42,176 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,188 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,208 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,208 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 69 [2020-12-22 19:36:42,210 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-22 19:36:42,211 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:36:42,212 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,222 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,223 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,223 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:65, output treesize:49 [2020-12-22 19:36:42,698 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,698 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 126 [2020-12-22 19:36:42,702 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,716 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:36:42,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:36:42,728 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,728 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 1 case distinctions, treesize of input 78 treesize of output 79 [2020-12-22 19:36:42,732 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,744 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,748 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,748 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:127, output treesize:49 [2020-12-22 19:36:42,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:36:42,883 INFO L348 Elim1Store]: treesize reduction 32, result has 56.8 percent of original size [2020-12-22 19:36:42,883 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 58 treesize of output 70 [2020-12-22 19:36:42,885 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,902 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:36:42,908 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2020-12-22 19:36:42,909 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:42,921 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:42,923 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 19:36:42,923 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:90, output treesize:49 [2020-12-22 19:36:43,318 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:43,319 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 63 [2020-12-22 19:36:43,324 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 19:36:43,357 INFO L625 ElimStorePlain]: treesize reduction 3, result has 93.9 percent of original size [2020-12-22 19:36:43,367 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:43,367 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2020-12-22 19:36:43,369 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:43,378 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:43,380 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:43,380 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:84, output treesize:16 [2020-12-22 19:36:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 19:36:43,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:36:43,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 48 [2020-12-22 19:36:43,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135310722] [2020-12-22 19:36:43,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-12-22 19:36:43,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:43,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-12-22 19:36:43,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2116, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 19:36:43,708 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 48 states. [2020-12-22 19:36:44,893 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-12-22 19:36:45,174 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-12-22 19:36:45,491 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 95 [2020-12-22 19:36:45,862 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 99 [2020-12-22 19:36:46,181 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-12-22 19:36:46,811 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 111 [2020-12-22 19:36:47,270 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 116 [2020-12-22 19:36:47,712 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 116 [2020-12-22 19:36:48,200 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 120 [2020-12-22 19:36:48,674 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 120 [2020-12-22 19:36:49,137 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 110 [2020-12-22 19:36:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:49,258 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2020-12-22 19:36:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:36:49,259 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 62 [2020-12-22 19:36:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:49,260 INFO L225 Difference]: With dead ends: 68 [2020-12-22 19:36:49,260 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 19:36:49,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=576, Invalid=3846, Unknown=0, NotChecked=0, Total=4422 [2020-12-22 19:36:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 19:36:49,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-22 19:36:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 19:36:49,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-12-22 19:36:49,264 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 62 [2020-12-22 19:36:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:49,264 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-12-22 19:36:49,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-12-22 19:36:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-12-22 19:36:49,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 19:36:49,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:49,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:36:49,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-22 19:36:49,466 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:49,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1166330629, now seen corresponding path program 1 times [2020-12-22 19:36:49,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:49,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367976324] [2020-12-22 19:36:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:36:49,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367976324] [2020-12-22 19:36:49,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169239271] [2020-12-22 19:36:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:36:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:50,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 19:36:50,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:36:50,082 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 19:36:50,083 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:50,084 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:50,085 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:50,085 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:36:50,347 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:36:50,405 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:50,406 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:36:50,425 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:50,426 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 19:36:50,428 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:50,436 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 19:36:50,437 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:50,480 INFO L625 ElimStorePlain]: treesize reduction 23, result has 54.0 percent of original size [2020-12-22 19:36:50,482 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-22 19:36:50,482 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:24 [2020-12-22 19:36:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 19:36:50,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:36:50,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14] total 31 [2020-12-22 19:36:50,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047229360] [2020-12-22 19:36:50,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-22 19:36:50,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:50,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-22 19:36:50,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2020-12-22 19:36:50,626 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 32 states. [2020-12-22 19:36:51,606 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-12-22 19:36:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:36:52,561 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-12-22 19:36:52,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:36:52,562 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 64 [2020-12-22 19:36:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:36:52,563 INFO L225 Difference]: With dead ends: 67 [2020-12-22 19:36:52,563 INFO L226 Difference]: Without dead ends: 67 [2020-12-22 19:36:52,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=394, Invalid=2156, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 19:36:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-22 19:36:52,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-12-22 19:36:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-22 19:36:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-12-22 19:36:52,566 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2020-12-22 19:36:52,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:36:52,566 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-12-22 19:36:52,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-22 19:36:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-12-22 19:36:52,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 19:36:52,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:36:52,567 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:36:52,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:36:52,775 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:36:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:36:52,776 INFO L82 PathProgramCache]: Analyzing trace with hash 142736193, now seen corresponding path program 1 times [2020-12-22 19:36:52,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:36:52,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540371552] [2020-12-22 19:36:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:36:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:36:53,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540371552] [2020-12-22 19:36:53,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802478210] [2020-12-22 19:36:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:36:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:36:53,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 79 conjunts are in the unsatisfiable core [2020-12-22 19:36:53,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:36:53,990 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:53,990 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 63 [2020-12-22 19:36:53,993 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:54,007 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:54,008 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:54,009 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:31 [2020-12-22 19:36:54,284 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 19:36:54,285 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:54,300 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:54,301 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:36:54,301 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:38 [2020-12-22 19:36:54,468 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:54,468 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 56 [2020-12-22 19:36:54,471 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-22 19:36:54,471 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:36:54,472 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:54,487 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:54,488 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 19:36:54,488 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:62, output treesize:54 [2020-12-22 19:36:55,173 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:55,174 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 69 treesize of output 122 [2020-12-22 19:36:55,176 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2020-12-22 19:36:55,177 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:36:55,178 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:55,221 INFO L625 ElimStorePlain]: treesize reduction 28, result has 68.2 percent of original size [2020-12-22 19:36:55,223 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 19:36:55,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:85, output treesize:43 [2020-12-22 19:36:55,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:36:55,402 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2020-12-22 19:36:55,404 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:55,416 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:55,418 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 19:36:55,418 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:62, output treesize:43 [2020-12-22 19:36:55,735 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:55,736 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 34 treesize of output 26 [2020-12-22 19:36:55,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:36:55,739 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:36:55,740 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 19:36:55,763 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:55,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:36:55,767 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 19:36:55,767 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 19:36:55,768 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:38 [2020-12-22 19:36:55,769 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:36:55,879 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:36:56,052 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:56,088 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:56,088 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 50 [2020-12-22 19:36:56,091 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:56,098 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-22 19:36:56,100 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:56,171 INFO L625 ElimStorePlain]: treesize reduction 28, result has 68.9 percent of original size [2020-12-22 19:36:56,173 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:56,174 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-12-22 19:36:56,174 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:69, output treesize:62 [2020-12-22 19:36:56,175 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:56,332 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:36:56,591 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:56,591 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 19:36:56,593 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:36:56,603 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:36:56,605 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:36:56,606 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:25 [2020-12-22 19:36:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:36:56,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:36:56,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 45 [2020-12-22 19:36:56,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084518449] [2020-12-22 19:36:56,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-22 19:36:56,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:36:56,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-22 19:36:56,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1955, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 19:36:56,762 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 46 states. [2020-12-22 19:36:58,087 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 34 [2020-12-22 19:36:58,741 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2020-12-22 19:36:59,095 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 54 [2020-12-22 19:36:59,481 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 64 [2020-12-22 19:36:59,896 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 64 [2020-12-22 19:37:00,281 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 56 [2020-12-22 19:37:01,366 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2020-12-22 19:37:01,652 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2020-12-22 19:37:02,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:02,345 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-12-22 19:37:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 19:37:02,345 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 66 [2020-12-22 19:37:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:02,346 INFO L225 Difference]: With dead ends: 66 [2020-12-22 19:37:02,346 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:37:02,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=363, Invalid=3927, Unknown=0, NotChecked=0, Total=4290 [2020-12-22 19:37:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:37:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:37:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:37:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:37:02,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-12-22 19:37:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:02,347 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:37:02,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-22 19:37:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:37:02,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:37:02,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 19:37:02,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:37:02 BoogieIcfgContainer [2020-12-22 19:37:02,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:37:02,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:37:02,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:37:02,556 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:37:02,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:35:34" (3/4) ... [2020-12-22 19:37:02,561 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:37:02,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-22 19:37:02,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-22 19:37:02,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 19:37:02,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 19:37:02,656 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-simple/sll2c_update_all_reverse.i-witness.graphml [2020-12-22 19:37:02,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:37:02,657 INFO L168 Benchmark]: Toolchain (without parser) took 89424.01 ms. Allocated memory was 157.3 MB in the beginning and 351.3 MB in the end (delta: 194.0 MB). Free memory was 131.3 MB in the beginning and 162.6 MB in the end (delta: -31.3 MB). Peak memory consumption was 164.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:37:02,658 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory is still 131.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:37:02,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.80 ms. Allocated memory is still 157.3 MB. Free memory was 131.2 MB in the beginning and 108.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:37:02,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.57 ms. Allocated memory is still 157.3 MB. Free memory was 108.2 MB in the beginning and 106.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:37:02,664 INFO L168 Benchmark]: Boogie Preprocessor took 56.96 ms. Allocated memory is still 157.3 MB. Free memory was 106.0 MB in the beginning and 104.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:37:02,664 INFO L168 Benchmark]: RCFGBuilder took 799.68 ms. Allocated memory is still 157.3 MB. Free memory was 104.0 MB in the beginning and 71.5 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:37:02,664 INFO L168 Benchmark]: TraceAbstraction took 87762.50 ms. Allocated memory was 157.3 MB in the beginning and 351.3 MB in the end (delta: 194.0 MB). Free memory was 71.1 MB in the beginning and 167.1 MB in the end (delta: -96.0 MB). Peak memory consumption was 99.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:37:02,665 INFO L168 Benchmark]: Witness Printer took 100.55 ms. Allocated memory is still 351.3 MB. Free memory was 166.5 MB in the beginning and 162.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:37:02,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory is still 131.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 631.80 ms. Allocated memory is still 157.3 MB. Free memory was 131.2 MB in the beginning and 108.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.57 ms. Allocated memory is still 157.3 MB. Free memory was 108.2 MB in the beginning and 106.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.96 ms. Allocated memory is still 157.3 MB. Free memory was 106.0 MB in the beginning and 104.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 799.68 ms. Allocated memory is still 157.3 MB. Free memory was 104.0 MB in the beginning and 71.5 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 87762.50 ms. Allocated memory was 157.3 MB in the beginning and 351.3 MB in the end (delta: 194.0 MB). Free memory was 71.1 MB in the beginning and 167.1 MB in the end (delta: -96.0 MB). Peak memory consumption was 99.1 MB. Max. memory is 8.0 GB. * Witness Printer took 100.55 ms. Allocated memory is still 351.3 MB. Free memory was 166.5 MB in the beginning and 162.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 579]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 599]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 579]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 597]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 603]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 579]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 603]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 637]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 599]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 600]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 579]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 588]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 588]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 615]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 592]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 603]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 592]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 618]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 618]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 615]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 600]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 620]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 608]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 600]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 608]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 597]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 611]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 611]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 32 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 86 locations, 32 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 87.6s, OverallIterations: 36, TraceHistogramMax: 2, AutomataDifference: 53.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1694 SDtfs, 14453 SDslu, 9167 SDs, 0 SdLazy, 14382 SolverSat, 1331 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1530 GetRequests, 608 SyntacticMatches, 9 SemanticMatches, 913 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6139 ImplicationChecksByTransitivity, 56.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 36 MinimizatonAttempts, 752 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 27.4s InterpolantComputationTime, 2108 NumberOfCodeBlocks, 2108 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 2055 ConstructedInterpolants, 121 QuantifiedInterpolants, 1421255 SizeOfPredicates, 443 NumberOfNonLiveVariables, 4907 ConjunctsInSsa, 945 ConjunctsInUnsatCore, 53 InterpolantComputations, 20 PerfectInterpolantSequences, 402/610 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...