/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/sll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:37:40,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:37:40,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:37:40,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:37:40,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:37:40,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:37:40,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:37:40,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:37:40,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:37:40,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:37:40,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:37:40,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:37:40,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:37:40,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:37:40,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:37:40,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:37:40,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:37:40,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:37:40,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:37:40,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:37:40,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:37:40,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:37:40,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:37:40,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:37:40,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:37:40,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:37:40,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:37:40,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:37:40,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:37:40,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:37:40,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:37:40,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:37:40,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:37:40,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:37:40,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:37:40,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:37:40,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:37:40,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:37:40,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:37:40,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:37:40,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:37:40,874 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:37:40,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:37:40,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:37:40,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:37:40,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:37:40,876 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:37:40,876 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:37:40,876 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:37:40,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:37:40,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:37:40,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:37:40,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:37:40,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:37:40,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:37:40,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:37:40,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:37:40,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:37:40,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:37:40,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:37:40,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:37:40,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:37:41,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:37:41,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:37:41,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:37:41,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:37:41,326 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:37:41,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2n_remove_all.i [2020-12-22 19:37:41,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e25b4e78/694c09607928414eab485d03a0651770/FLAGced034e16 [2020-12-22 19:37:42,166 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:37:42,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all.i [2020-12-22 19:37:42,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e25b4e78/694c09607928414eab485d03a0651770/FLAGced034e16 [2020-12-22 19:37:42,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e25b4e78/694c09607928414eab485d03a0651770 [2020-12-22 19:37:42,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:37:42,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:37:42,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:37:42,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:37:42,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:37:42,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:37:42" (1/1) ... [2020-12-22 19:37:42,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9c8b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:42, skipping insertion in model container [2020-12-22 19:37:42,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:37:42" (1/1) ... [2020-12-22 19:37:42,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:37:42,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:37:42,992 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/sll2n_remove_all.i[23806,23819] [2020-12-22 19:37:42,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:37:43,016 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:37:43,112 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/sll2n_remove_all.i[23806,23819] [2020-12-22 19:37:43,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:37:43,189 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:37:43,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43 WrapperNode [2020-12-22 19:37:43,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:37:43,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:37:43,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:37:43,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:37:43,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (1/1) ... [2020-12-22 19:37:43,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (1/1) ... [2020-12-22 19:37:43,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:37:43,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:37:43,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:37:43,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:37:43,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (1/1) ... [2020-12-22 19:37:43,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (1/1) ... [2020-12-22 19:37:43,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (1/1) ... [2020-12-22 19:37:43,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (1/1) ... [2020-12-22 19:37:43,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (1/1) ... [2020-12-22 19:37:43,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (1/1) ... [2020-12-22 19:37:43,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (1/1) ... [2020-12-22 19:37:43,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:37:43,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:37:43,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:37:43,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:37:43,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (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 19:37:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:37:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:37:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 19:37:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:37:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 19:37:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:37:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 19:37:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:37:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:37:43,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:37:44,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:37:44,078 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-22 19:37:44,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:37:44 BoogieIcfgContainer [2020-12-22 19:37:44,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:37:44,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:37:44,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:37:44,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:37:44,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:37:42" (1/3) ... [2020-12-22 19:37:44,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5709f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:37:44, skipping insertion in model container [2020-12-22 19:37:44,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:37:43" (2/3) ... [2020-12-22 19:37:44,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5709f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:37:44, skipping insertion in model container [2020-12-22 19:37:44,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:37:44" (3/3) ... [2020-12-22 19:37:44,092 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2020-12-22 19:37:44,099 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:37:44,106 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2020-12-22 19:37:44,127 INFO L253 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2020-12-22 19:37:44,152 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:37:44,153 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:37:44,153 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:37:44,153 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:37:44,153 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:37:44,154 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:37:44,154 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:37:44,154 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:37:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-12-22 19:37:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:37:44,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:44,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:37:44,183 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:44,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:44,191 INFO L82 PathProgramCache]: Analyzing trace with hash 28698858, now seen corresponding path program 1 times [2020-12-22 19:37:44,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:44,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67409722] [2020-12-22 19:37:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:44,406 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 19:37:44,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67409722] [2020-12-22 19:37:44,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:44,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:37:44,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492344274] [2020-12-22 19:37:44,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:37:44,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:44,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:37:44,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:37:44,439 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-12-22 19:37:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:44,542 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2020-12-22 19:37:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:37:44,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 19:37:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:44,556 INFO L225 Difference]: With dead ends: 75 [2020-12-22 19:37:44,556 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 19:37:44,558 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 19:37:44,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 19:37:44,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 46. [2020-12-22 19:37:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:37:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-12-22 19:37:44,605 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 5 [2020-12-22 19:37:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:44,606 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-12-22 19:37:44,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:37:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-12-22 19:37:44,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:37:44,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:44,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:37:44,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:37:44,608 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:44,609 INFO L82 PathProgramCache]: Analyzing trace with hash 28698859, now seen corresponding path program 1 times [2020-12-22 19:37:44,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:44,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393987546] [2020-12-22 19:37:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:44,743 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 19:37:44,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393987546] [2020-12-22 19:37:44,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:44,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:37:44,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133001920] [2020-12-22 19:37:44,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:37:44,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:44,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:37:44,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:37:44,748 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 3 states. [2020-12-22 19:37:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:44,827 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-12-22 19:37:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:37:44,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 19:37:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:44,830 INFO L225 Difference]: With dead ends: 76 [2020-12-22 19:37:44,830 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 19:37:44,831 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 19:37:44,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 19:37:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 44. [2020-12-22 19:37:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 19:37:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-22 19:37:44,840 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 5 [2020-12-22 19:37:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:44,840 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-22 19:37:44,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:37:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-22 19:37:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:37:44,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:44,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:44,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:37:44,842 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:44,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:44,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1808567236, now seen corresponding path program 1 times [2020-12-22 19:37:44,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:44,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573982899] [2020-12-22 19:37:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:37:44,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573982899] [2020-12-22 19:37:44,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:44,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:37:44,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674784375] [2020-12-22 19:37:44,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:37:44,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:44,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:37:44,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:37:44,886 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 3 states. [2020-12-22 19:37:44,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:44,898 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-12-22 19:37:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:37:44,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 19:37:44,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:44,902 INFO L225 Difference]: With dead ends: 55 [2020-12-22 19:37:44,903 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 19:37:44,903 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 19:37:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 19:37:44,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2020-12-22 19:37:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:37:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-12-22 19:37:44,914 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 7 [2020-12-22 19:37:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:44,915 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-12-22 19:37:44,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:37:44,917 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-12-22 19:37:44,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 19:37:44,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:44,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:44,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:37:44,918 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:44,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:44,919 INFO L82 PathProgramCache]: Analyzing trace with hash -245418610, now seen corresponding path program 1 times [2020-12-22 19:37:44,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:44,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924881382] [2020-12-22 19:37:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:44,999 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 19:37:44,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924881382] [2020-12-22 19:37:45,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:45,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:37:45,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488549643] [2020-12-22 19:37:45,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:37:45,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:45,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:37:45,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:37:45,002 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 5 states. [2020-12-22 19:37:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:45,160 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-12-22 19:37:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:37:45,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-22 19:37:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:45,161 INFO L225 Difference]: With dead ends: 72 [2020-12-22 19:37:45,161 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 19:37:45,162 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 19:37:45,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 19:37:45,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 44. [2020-12-22 19:37:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 19:37:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-22 19:37:45,168 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 9 [2020-12-22 19:37:45,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:45,168 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-22 19:37:45,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:37:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-22 19:37:45,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 19:37:45,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:45,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:45,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:37:45,170 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:45,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:45,171 INFO L82 PathProgramCache]: Analyzing trace with hash -245418609, now seen corresponding path program 1 times [2020-12-22 19:37:45,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:45,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912795448] [2020-12-22 19:37:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:45,287 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 19:37:45,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912795448] [2020-12-22 19:37:45,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:45,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:37:45,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385374833] [2020-12-22 19:37:45,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:37:45,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:45,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:37:45,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:37:45,290 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 5 states. [2020-12-22 19:37:45,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:45,401 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-12-22 19:37:45,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:37:45,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-22 19:37:45,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:45,402 INFO L225 Difference]: With dead ends: 48 [2020-12-22 19:37:45,402 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 19:37:45,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 19:37:45,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 19:37:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-12-22 19:37:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 19:37:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-12-22 19:37:45,408 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 9 [2020-12-22 19:37:45,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:45,409 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-12-22 19:37:45,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:37:45,409 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-12-22 19:37:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:37:45,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:45,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:45,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:37:45,410 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:45,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:45,411 INFO L82 PathProgramCache]: Analyzing trace with hash -718760712, now seen corresponding path program 1 times [2020-12-22 19:37:45,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:45,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894751903] [2020-12-22 19:37:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:37:45,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894751903] [2020-12-22 19:37:45,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922183512] [2020-12-22 19:37:45,465 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 19:37:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:45,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:37:45,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:37:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:37:45,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:37:45,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 19:37:45,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270768890] [2020-12-22 19:37:45,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:37:45,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:45,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:37:45,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:37:45,640 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 5 states. [2020-12-22 19:37:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:45,660 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-22 19:37:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:37:45,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 19:37:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:45,666 INFO L225 Difference]: With dead ends: 52 [2020-12-22 19:37:45,666 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 19:37:45,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:37:45,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 19:37:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-22 19:37:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 19:37:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-12-22 19:37:45,678 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 16 [2020-12-22 19:37:45,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:45,683 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-12-22 19:37:45,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:37:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-12-22 19:37:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:37:45,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:45,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:45,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 19:37:45,887 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:45,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:45,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1731307076, now seen corresponding path program 2 times [2020-12-22 19:37:45,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:45,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767256218] [2020-12-22 19:37:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:37:45,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767256218] [2020-12-22 19:37:45,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:45,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:37:45,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849111388] [2020-12-22 19:37:45,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:37:45,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:45,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:37:45,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:37:45,967 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 4 states. [2020-12-22 19:37:45,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:45,988 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-12-22 19:37:45,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:37:45,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-22 19:37:45,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:45,990 INFO L225 Difference]: With dead ends: 73 [2020-12-22 19:37:45,990 INFO L226 Difference]: Without dead ends: 73 [2020-12-22 19:37:45,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:37:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-22 19:37:45,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2020-12-22 19:37:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 19:37:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-12-22 19:37:45,995 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 25 [2020-12-22 19:37:45,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:45,996 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-12-22 19:37:45,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:37:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-12-22 19:37:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:37:45,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:45,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:45,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:37:45,998 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:45,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1731307113, now seen corresponding path program 1 times [2020-12-22 19:37:45,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:45,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468420060] [2020-12-22 19:37:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 19:37:46,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468420060] [2020-12-22 19:37:46,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661436853] [2020-12-22 19:37:46,120 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 19:37:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:46,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 19:37:46,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:37:46,279 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 19:37:46,281 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:46,284 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:46,285 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:37:46,285 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:37:46,317 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:46,318 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 19:37:46,322 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:46,336 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-12-22 19:37:46,338 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:37:46,338 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-12-22 19:37:46,376 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:46,377 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 19:37:46,381 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:46,395 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-12-22 19:37:46,397 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:37:46,398 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-12-22 19:37:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:37:46,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:37:46,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2020-12-22 19:37:46,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398140123] [2020-12-22 19:37:46,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:37:46,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:46,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:37:46,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:37:46,422 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 4 states. [2020-12-22 19:37:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:46,491 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-12-22 19:37:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:37:46,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-22 19:37:46,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:46,492 INFO L225 Difference]: With dead ends: 66 [2020-12-22 19:37:46,493 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 19:37:46,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:37:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 19:37:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-12-22 19:37:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 19:37:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-12-22 19:37:46,498 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 25 [2020-12-22 19:37:46,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:46,499 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-12-22 19:37:46,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:37:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-12-22 19:37:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:37:46,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:46,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:46,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:37:46,716 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:46,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1731307114, now seen corresponding path program 1 times [2020-12-22 19:37:46,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:46,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630580226] [2020-12-22 19:37:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:37:46,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630580226] [2020-12-22 19:37:46,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715233562] [2020-12-22 19:37:46,824 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 19:37:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:46,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 19:37:46,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:37:46,931 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 19:37:46,932 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:46,939 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:46,940 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:37:46,940 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 19:37:46,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:37:46,963 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 19:37:46,965 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:46,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:46,978 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:37:46,978 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:22 [2020-12-22 19:37:47,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:37:47,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:37:47,131 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:47,133 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 36 [2020-12-22 19:37:47,144 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:47,194 INFO L625 ElimStorePlain]: treesize reduction 14, result has 67.4 percent of original size [2020-12-22 19:37:47,199 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 19:37:47,200 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:29 [2020-12-22 19:37:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:37:47,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:37:47,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 19:37:47,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765928751] [2020-12-22 19:37:47,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:37:47,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:47,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:37:47,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:37:47,473 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 9 states. [2020-12-22 19:37:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:47,657 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2020-12-22 19:37:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:37:47,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-12-22 19:37:47,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:47,661 INFO L225 Difference]: With dead ends: 60 [2020-12-22 19:37:47,661 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 19:37:47,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:37:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 19:37:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-12-22 19:37:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 19:37:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-12-22 19:37:47,677 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 25 [2020-12-22 19:37:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:47,678 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-12-22 19:37:47,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:37:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-12-22 19:37:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:37:47,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:47,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:47,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:37:47,897 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:47,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:47,898 INFO L82 PathProgramCache]: Analyzing trace with hash 2130912971, now seen corresponding path program 1 times [2020-12-22 19:37:47,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:47,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058544640] [2020-12-22 19:37:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:37:48,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058544640] [2020-12-22 19:37:48,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:48,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 19:37:48,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460098871] [2020-12-22 19:37:48,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:37:48,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:48,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:37:48,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:37:48,034 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 10 states. [2020-12-22 19:37:48,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:48,340 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-12-22 19:37:48,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:37:48,341 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-22 19:37:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:48,344 INFO L225 Difference]: With dead ends: 59 [2020-12-22 19:37:48,344 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 19:37:48,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:37:48,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 19:37:48,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-12-22 19:37:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:37:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-12-22 19:37:48,355 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 26 [2020-12-22 19:37:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:48,357 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-12-22 19:37:48,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:37:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-12-22 19:37:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:37:48,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:48,359 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:48,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:37:48,359 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:48,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2130912972, now seen corresponding path program 1 times [2020-12-22 19:37:48,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:48,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019970572] [2020-12-22 19:37:48,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:48,597 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 19:37:48,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019970572] [2020-12-22 19:37:48,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:48,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 19:37:48,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311087404] [2020-12-22 19:37:48,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:37:48,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:48,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:37:48,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:37:48,600 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 10 states. [2020-12-22 19:37:49,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:49,013 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2020-12-22 19:37:49,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:37:49,014 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-22 19:37:49,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:49,015 INFO L225 Difference]: With dead ends: 60 [2020-12-22 19:37:49,015 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 19:37:49,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:37:49,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 19:37:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-12-22 19:37:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:37:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-12-22 19:37:49,027 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 26 [2020-12-22 19:37:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:49,027 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-12-22 19:37:49,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:37:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-12-22 19:37:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:37:49,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:49,033 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] [2020-12-22 19:37:49,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:37:49,035 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:49,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:49,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1883260242, now seen corresponding path program 1 times [2020-12-22 19:37:49,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:49,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613052661] [2020-12-22 19:37:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:49,165 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 19:37:49,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613052661] [2020-12-22 19:37:49,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:49,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 19:37:49,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036398230] [2020-12-22 19:37:49,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:37:49,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:49,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:37:49,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:37:49,168 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 10 states. [2020-12-22 19:37:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:49,427 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-12-22 19:37:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:37:49,428 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-22 19:37:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:49,428 INFO L225 Difference]: With dead ends: 59 [2020-12-22 19:37:49,428 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 19:37:49,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:37:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 19:37:49,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-12-22 19:37:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 19:37:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-12-22 19:37:49,432 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 29 [2020-12-22 19:37:49,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:49,433 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-12-22 19:37:49,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:37:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-12-22 19:37:49,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:37:49,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:49,434 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] [2020-12-22 19:37:49,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:37:49,434 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:49,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:49,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1748474732, now seen corresponding path program 1 times [2020-12-22 19:37:49,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:49,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152361092] [2020-12-22 19:37:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:49,564 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 19:37:49,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152361092] [2020-12-22 19:37:49,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:49,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 19:37:49,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321635941] [2020-12-22 19:37:49,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:37:49,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:49,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:37:49,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:37:49,568 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 10 states. [2020-12-22 19:37:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:49,930 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-12-22 19:37:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:37:49,931 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-12-22 19:37:49,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:49,932 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:37:49,932 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 19:37:49,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:37:49,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 19:37:49,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-12-22 19:37:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 19:37:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-12-22 19:37:49,935 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 30 [2020-12-22 19:37:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:49,936 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-12-22 19:37:49,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:37:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-12-22 19:37:49,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:37:49,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:49,937 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:49,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:37:49,937 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:49,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:49,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1631858064, now seen corresponding path program 1 times [2020-12-22 19:37:49,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:49,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810641284] [2020-12-22 19:37:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:37:49,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810641284] [2020-12-22 19:37:49,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:49,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:37:49,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823181843] [2020-12-22 19:37:49,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:37:49,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:49,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:37:49,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:37:49,989 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 5 states. [2020-12-22 19:37:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:50,066 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2020-12-22 19:37:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:37:50,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 19:37:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:50,068 INFO L225 Difference]: With dead ends: 53 [2020-12-22 19:37:50,068 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 19:37:50,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:37:50,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 19:37:50,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-22 19:37:50,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 19:37:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-12-22 19:37:50,074 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 31 [2020-12-22 19:37:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:50,077 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-12-22 19:37:50,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:37:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-12-22 19:37:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:37:50,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:50,079 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] [2020-12-22 19:37:50,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:37:50,079 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:50,080 INFO L82 PathProgramCache]: Analyzing trace with hash 952007663, now seen corresponding path program 1 times [2020-12-22 19:37:50,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:50,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48796605] [2020-12-22 19:37:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:37:50,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48796605] [2020-12-22 19:37:50,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635351030] [2020-12-22 19:37:50,288 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 19:37:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:50,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:37:50,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:37:50,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:37:50,511 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 19:37:50,512 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:50,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:50,524 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:37:50,525 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:16 [2020-12-22 19:37:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:37:50,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:37:50,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2020-12-22 19:37:50,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015300409] [2020-12-22 19:37:50,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:37:50,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:50,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:37:50,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:37:50,577 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 7 states. [2020-12-22 19:37:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:50,738 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-22 19:37:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:37:50,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-22 19:37:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:50,740 INFO L225 Difference]: With dead ends: 52 [2020-12-22 19:37:50,740 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 19:37:50,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:37:50,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 19:37:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-22 19:37:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 19:37:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-12-22 19:37:50,744 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 32 [2020-12-22 19:37:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:50,744 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-12-22 19:37:50,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:37:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-12-22 19:37:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:37:50,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:50,747 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] [2020-12-22 19:37:50,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:37:50,949 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:50,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:50,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1591269939, now seen corresponding path program 1 times [2020-12-22 19:37:50,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:50,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219902181] [2020-12-22 19:37:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:37:51,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219902181] [2020-12-22 19:37:51,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:37:51,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:37:51,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017812338] [2020-12-22 19:37:51,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:37:51,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:51,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:37:51,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:37:51,005 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 4 states. [2020-12-22 19:37:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:51,047 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-12-22 19:37:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:37:51,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 19:37:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:51,048 INFO L225 Difference]: With dead ends: 50 [2020-12-22 19:37:51,049 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 19:37:51,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 19:37:51,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 19:37:51,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-22 19:37:51,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:37:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-12-22 19:37:51,051 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 35 [2020-12-22 19:37:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:51,052 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-12-22 19:37:51,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:37:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-12-22 19:37:51,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 19:37:51,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:51,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:37:51,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:37:51,057 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2084729020, now seen corresponding path program 1 times [2020-12-22 19:37:51,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:51,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146844748] [2020-12-22 19:37:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:37:51,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146844748] [2020-12-22 19:37:51,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929213772] [2020-12-22 19:37:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:37:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:37:52,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-22 19:37:52,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:37:52,081 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 19:37:52,082 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:52,086 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:52,087 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:37:52,088 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:37:52,268 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:52,269 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 19:37:52,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:37:52,278 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:52,302 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:52,303 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:37:52,303 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:21 [2020-12-22 19:37:52,564 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 13 treesize of output 9 [2020-12-22 19:37:52,564 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:52,578 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:52,581 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:37:52,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:36 [2020-12-22 19:37:53,468 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2020-12-22 19:37:53,470 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:53,500 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:53,503 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 19:37:53,504 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:92, output treesize:81 [2020-12-22 19:37:53,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:37:53,811 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:37:53,812 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 35 treesize of output 31 [2020-12-22 19:37:53,814 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:53,868 INFO L625 ElimStorePlain]: treesize reduction 18, result has 75.0 percent of original size [2020-12-22 19:37:53,871 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:37:53,871 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:82, output treesize:54 [2020-12-22 19:37:54,044 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:37:54,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:37:54,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:37:54,053 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:37:54,063 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:54,064 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 58 [2020-12-22 19:37:54,069 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 19:37:54,106 INFO L625 ElimStorePlain]: treesize reduction 24, result has 64.2 percent of original size [2020-12-22 19:37:54,114 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:37:54,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:59, output treesize:43 [2020-12-22 19:37:54,394 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:37:54,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:37:54,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:37:54,398 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:37:54,400 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:54,401 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 15 [2020-12-22 19:37:54,402 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:37:54,417 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:37:54,423 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:37:54,424 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:53, output treesize:11 [2020-12-22 19:37:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:37:54,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:37:54,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2020-12-22 19:37:54,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166320112] [2020-12-22 19:37:54,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-12-22 19:37:54,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:37:54,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-12-22 19:37:54,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 19:37:54,535 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 47 states. [2020-12-22 19:37:56,025 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-22 19:37:56,315 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-12-22 19:37:56,592 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-12-22 19:37:56,941 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-12-22 19:37:57,301 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-12-22 19:37:57,498 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-22 19:37:57,775 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-12-22 19:37:58,057 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-12-22 19:37:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:37:58,928 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-12-22 19:37:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 19:37:58,928 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 36 [2020-12-22 19:37:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:37:58,929 INFO L225 Difference]: With dead ends: 75 [2020-12-22 19:37:58,929 INFO L226 Difference]: Without dead ends: 75 [2020-12-22 19:37:58,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=843, Invalid=5009, Unknown=0, NotChecked=0, Total=5852 [2020-12-22 19:37:58,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-22 19:37:58,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2020-12-22 19:37:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 19:37:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-12-22 19:37:58,935 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 36 [2020-12-22 19:37:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:37:58,936 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-12-22 19:37:58,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-12-22 19:37:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-12-22 19:37:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 19:37:58,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:37:58,937 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] [2020-12-22 19:37:59,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 19:37:59,152 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:37:59,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:37:59,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2084729021, now seen corresponding path program 1 times [2020-12-22 19:37:59,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:37:59,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477425088] [2020-12-22 19:37:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:37:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:38:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:38:00,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477425088] [2020-12-22 19:38:00,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374050118] [2020-12-22 19:38:00,097 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 19:38:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:38:00,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 75 conjunts are in the unsatisfiable core [2020-12-22 19:38:00,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:38:00,250 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 19:38:00,251 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:00,255 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:00,256 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:38:00,256 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:38:00,642 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:00,643 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 19 treesize of output 33 [2020-12-22 19:38:00,647 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:00,677 INFO L625 ElimStorePlain]: treesize reduction 14, result has 64.1 percent of original size [2020-12-22 19:38:00,679 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:38:00,679 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:25 [2020-12-22 19:38:00,960 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 19:38:00,961 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:00,980 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:00,988 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 19:38:00,990 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:01,008 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:01,011 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 19:38:01,012 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:54, output treesize:46 [2020-12-22 19:38:02,409 INFO L443 ElimStorePlain]: Different costs {12=[|v_#memory_$Pointer$.offset_15|], 20=[|v_#memory_$Pointer$.base_17|]} [2020-12-22 19:38:02,414 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:02,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:02,459 INFO L348 Elim1Store]: treesize reduction 36, result has 51.4 percent of original size [2020-12-22 19:38:02,460 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 95 [2020-12-22 19:38:02,463 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:02,544 INFO L625 ElimStorePlain]: treesize reduction 50, result has 67.1 percent of original size [2020-12-22 19:38:02,551 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:02,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:02,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:02,557 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:02,566 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:02,567 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 89 [2020-12-22 19:38:02,574 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:02,645 INFO L625 ElimStorePlain]: treesize reduction 24, result has 75.0 percent of original size [2020-12-22 19:38:02,651 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:02,652 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:125, output treesize:72 [2020-12-22 19:38:02,973 INFO L443 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.base|], 12=[|#memory_$Pointer$.offset|]} [2020-12-22 19:38:02,979 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:02,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:02,983 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:02,984 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 12 [2020-12-22 19:38:02,985 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:03,011 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:03,016 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:03,017 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:03,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:03,022 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:03,023 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 18 [2020-12-22 19:38:03,024 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:03,043 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:03,047 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:03,047 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:89, output treesize:19 [2020-12-22 19:38:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:38:03,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:38:03,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 45 [2020-12-22 19:38:03,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769094146] [2020-12-22 19:38:03,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-22 19:38:03,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:38:03,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-22 19:38:03,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1922, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 19:38:03,162 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 46 states. [2020-12-22 19:38:04,387 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 19:38:04,574 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-12-22 19:38:04,811 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2020-12-22 19:38:05,145 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 91 [2020-12-22 19:38:05,524 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 95 [2020-12-22 19:38:05,940 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 104 [2020-12-22 19:38:06,426 WARN L197 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 116 [2020-12-22 19:38:06,875 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 109 [2020-12-22 19:38:07,319 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 111 [2020-12-22 19:38:07,746 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2020-12-22 19:38:08,146 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2020-12-22 19:38:08,544 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 108 [2020-12-22 19:38:08,950 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 118 [2020-12-22 19:38:09,400 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 123 [2020-12-22 19:38:10,032 WARN L197 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 130 [2020-12-22 19:38:10,517 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2020-12-22 19:38:10,807 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-12-22 19:38:10,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:38:10,809 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2020-12-22 19:38:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 19:38:10,810 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 36 [2020-12-22 19:38:10,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:38:10,811 INFO L225 Difference]: With dead ends: 92 [2020-12-22 19:38:10,811 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 19:38:10,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1002, Invalid=4110, Unknown=0, NotChecked=0, Total=5112 [2020-12-22 19:38:10,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 19:38:10,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-12-22 19:38:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 19:38:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-12-22 19:38:10,816 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 36 [2020-12-22 19:38:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:38:10,816 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-12-22 19:38:10,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-22 19:38:10,816 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-12-22 19:38:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 19:38:10,817 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:38:10,817 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] [2020-12-22 19:38:11,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 19:38:11,033 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:38:11,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:38:11,035 INFO L82 PathProgramCache]: Analyzing trace with hash 202055510, now seen corresponding path program 1 times [2020-12-22 19:38:11,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:38:11,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566460750] [2020-12-22 19:38:11,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:38:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:38:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:38:11,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566460750] [2020-12-22 19:38:11,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408700842] [2020-12-22 19:38:11,101 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 19:38:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:38:11,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:38:11,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:38:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:38:11,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:38:11,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 19:38:11,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912409896] [2020-12-22 19:38:11,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:38:11,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:38:11,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:38:11,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:38:11,252 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 6 states. [2020-12-22 19:38:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:38:11,291 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-12-22 19:38:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:38:11,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-12-22 19:38:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:38:11,292 INFO L225 Difference]: With dead ends: 56 [2020-12-22 19:38:11,292 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 19:38:11,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 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 19:38:11,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 19:38:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-22 19:38:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 19:38:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-12-22 19:38:11,298 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 37 [2020-12-22 19:38:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:38:11,298 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-12-22 19:38:11,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:38:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-12-22 19:38:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 19:38:11,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:38:11,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:38:11,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:38:11,515 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:38:11,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:38:11,516 INFO L82 PathProgramCache]: Analyzing trace with hash 935157533, now seen corresponding path program 1 times [2020-12-22 19:38:11,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:38:11,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610864888] [2020-12-22 19:38:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:38:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:38:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:38:12,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610864888] [2020-12-22 19:38:12,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972143234] [2020-12-22 19:38:12,207 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 19:38:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:38:12,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-22 19:38:12,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:38:12,842 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 19:38:12,843 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:12,855 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:12,858 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:12,858 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:28 [2020-12-22 19:38:13,262 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 34 treesize of output 22 [2020-12-22 19:38:13,264 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:13,306 INFO L625 ElimStorePlain]: treesize reduction 3, result has 93.2 percent of original size [2020-12-22 19:38:13,308 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 19:38:13,309 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:41 [2020-12-22 19:38:13,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:13,917 INFO L348 Elim1Store]: treesize reduction 24, result has 55.6 percent of original size [2020-12-22 19:38:13,917 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 60 [2020-12-22 19:38:13,921 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:13,957 INFO L625 ElimStorePlain]: treesize reduction 34, result has 53.4 percent of original size [2020-12-22 19:38:13,959 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:13,960 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:56, output treesize:39 [2020-12-22 19:38:14,196 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:14,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:14,200 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:14,200 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 16 [2020-12-22 19:38:14,202 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:14,209 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:14,211 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:38:14,212 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:43, output treesize:7 [2020-12-22 19:38:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:38:14,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:38:14,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 43 [2020-12-22 19:38:14,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945654134] [2020-12-22 19:38:14,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-22 19:38:14,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:38:14,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-22 19:38:14,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 19:38:14,249 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 44 states. [2020-12-22 19:38:15,345 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-22 19:38:15,527 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-22 19:38:15,746 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-12-22 19:38:15,998 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-12-22 19:38:16,235 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-12-22 19:38:16,464 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-12-22 19:38:16,709 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-12-22 19:38:16,924 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-12-22 19:38:17,144 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-22 19:38:17,364 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-12-22 19:38:17,620 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-22 19:38:17,926 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-22 19:38:18,064 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-22 19:38:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:38:18,263 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-12-22 19:38:18,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 19:38:18,263 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 39 [2020-12-22 19:38:18,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:38:18,265 INFO L225 Difference]: With dead ends: 83 [2020-12-22 19:38:18,265 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 19:38:18,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=959, Invalid=3597, Unknown=0, NotChecked=0, Total=4556 [2020-12-22 19:38:18,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 19:38:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 59. [2020-12-22 19:38:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 19:38:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-12-22 19:38:18,269 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 39 [2020-12-22 19:38:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:38:18,270 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-12-22 19:38:18,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-22 19:38:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-12-22 19:38:18,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 19:38:18,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:38:18,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:38:18,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:38:18,485 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:38:18,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:38:18,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1074887459, now seen corresponding path program 1 times [2020-12-22 19:38:18,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:38:18,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585962064] [2020-12-22 19:38:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:38:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:38:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:38:19,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585962064] [2020-12-22 19:38:19,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918671939] [2020-12-22 19:38:19,204 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 19:38:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:38:19,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-22 19:38:19,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:38:19,335 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 19:38:19,337 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:19,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:19,347 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:38:19,347 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 19:38:19,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:19,391 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 19:38:19,392 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:19,408 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:19,409 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:19,410 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:23 [2020-12-22 19:38:19,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:19,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:19,762 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:19,762 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 36 [2020-12-22 19:38:19,764 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:19,813 INFO L625 ElimStorePlain]: treesize reduction 14, result has 70.8 percent of original size [2020-12-22 19:38:19,815 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:19,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:34 [2020-12-22 19:38:20,250 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 19:38:20,251 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:20,282 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:20,286 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:20,286 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:50, output treesize:43 [2020-12-22 19:38:21,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:21,121 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:21,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:21,128 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:21,129 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2020-12-22 19:38:21,131 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:21,166 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:21,169 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:21,169 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:92, output treesize:62 [2020-12-22 19:38:21,503 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 15 treesize of output 7 [2020-12-22 19:38:21,505 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:21,541 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:21,543 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:21,544 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:69, output treesize:58 [2020-12-22 19:38:21,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:21,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:21,870 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:21,873 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:21,873 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 41 [2020-12-22 19:38:21,876 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 19:38:21,929 INFO L625 ElimStorePlain]: treesize reduction 15, result has 75.8 percent of original size [2020-12-22 19:38:21,933 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:21,934 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:63, output treesize:38 [2020-12-22 19:38:22,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:22,222 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 30 treesize of output 10 [2020-12-22 19:38:22,224 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:22,234 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:22,237 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:38:22,237 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:42, output treesize:3 [2020-12-22 19:38:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:38:22,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:38:22,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 42 [2020-12-22 19:38:22,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352969813] [2020-12-22 19:38:22,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-22 19:38:22,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:38:22,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-22 19:38:22,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 19:38:22,284 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 43 states. [2020-12-22 19:38:24,481 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 19:38:24,723 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-22 19:38:24,929 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-22 19:38:25,246 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-12-22 19:38:25,662 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-12-22 19:38:26,229 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-12-22 19:38:26,782 WARN L197 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2020-12-22 19:38:27,351 WARN L197 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2020-12-22 19:38:27,923 WARN L197 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-12-22 19:38:28,481 WARN L197 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 19:38:29,095 WARN L197 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 19:38:31,618 WARN L197 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-12-22 19:38:33,842 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-12-22 19:38:34,418 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-12-22 19:38:34,980 WARN L197 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-12-22 19:38:35,756 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-12-22 19:38:36,125 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-12-22 19:38:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:38:36,608 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-12-22 19:38:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 19:38:36,609 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 40 [2020-12-22 19:38:36,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:38:36,610 INFO L225 Difference]: With dead ends: 87 [2020-12-22 19:38:36,610 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 19:38:36,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=1101, Invalid=4011, Unknown=0, NotChecked=0, Total=5112 [2020-12-22 19:38:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 19:38:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 60. [2020-12-22 19:38:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 19:38:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-12-22 19:38:36,615 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 40 [2020-12-22 19:38:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:38:36,615 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-12-22 19:38:36,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-22 19:38:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-12-22 19:38:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 19:38:36,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:38:36,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:38:36,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:38:36,831 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:38:36,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:38:36,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1727610515, now seen corresponding path program 2 times [2020-12-22 19:38:36,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:38:36,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319147615] [2020-12-22 19:38:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:38:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:38:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 19:38:36,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319147615] [2020-12-22 19:38:36,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:38:36,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:38:36,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686026134] [2020-12-22 19:38:36,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:38:36,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:38:36,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:38:36,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:38:36,949 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 6 states. [2020-12-22 19:38:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:38:36,984 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-22 19:38:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:38:36,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-12-22 19:38:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:38:36,985 INFO L225 Difference]: With dead ends: 50 [2020-12-22 19:38:36,985 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 19:38:36,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:38:36,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 19:38:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-22 19:38:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 19:38:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-22 19:38:36,989 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 46 [2020-12-22 19:38:36,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:38:36,989 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-22 19:38:36,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:38:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-22 19:38:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 19:38:36,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:38:36,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:38:36,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 19:38:36,990 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:38:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:38:36,991 INFO L82 PathProgramCache]: Analyzing trace with hash -2016353083, now seen corresponding path program 2 times [2020-12-22 19:38:36,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:38:36,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124689512] [2020-12-22 19:38:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:38:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:38:37,846 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2020-12-22 19:38:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:38:39,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124689512] [2020-12-22 19:38:39,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351331749] [2020-12-22 19:38:39,233 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 19:38:39,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:38:39,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:38:39,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 123 conjunts are in the unsatisfiable core [2020-12-22 19:38:39,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:38:39,383 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:38:39,388 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 16 [2020-12-22 19:38:39,390 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:39,409 INFO L625 ElimStorePlain]: treesize reduction 8, result has 70.4 percent of original size [2020-12-22 19:38:39,410 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 19:38:39,410 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2020-12-22 19:38:39,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:39,529 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:39,529 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 44 [2020-12-22 19:38:39,532 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:39,578 INFO L625 ElimStorePlain]: treesize reduction 18, result has 60.9 percent of original size [2020-12-22 19:38:39,579 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:39,579 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:28 [2020-12-22 19:38:39,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:39,726 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:39,726 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 36 [2020-12-22 19:38:39,728 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:39,779 INFO L625 ElimStorePlain]: treesize reduction 18, result has 63.3 percent of original size [2020-12-22 19:38:39,780 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:38:39,780 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:31 [2020-12-22 19:38:40,256 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 19:38:40,257 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:40,283 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:40,286 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 19:38:40,287 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:40,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:40,314 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 19:38:40,314 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:54, output treesize:46 [2020-12-22 19:38:40,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:40,645 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:40,645 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 74 [2020-12-22 19:38:40,652 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:40,731 INFO L625 ElimStorePlain]: treesize reduction 36, result has 60.0 percent of original size [2020-12-22 19:38:40,733 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:40,733 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:54 [2020-12-22 19:38:40,910 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:40,911 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 56 [2020-12-22 19:38:40,913 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:41,022 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-12-22 19:38:41,023 INFO L625 ElimStorePlain]: treesize reduction 26, result has 74.5 percent of original size [2020-12-22 19:38:41,062 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:41,063 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 56 [2020-12-22 19:38:41,065 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:41,169 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-12-22 19:38:41,170 INFO L625 ElimStorePlain]: treesize reduction 26, result has 73.5 percent of original size [2020-12-22 19:38:41,176 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 19:38:41,176 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:80, output treesize:72 [2020-12-22 19:38:41,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:41,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:41,394 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:41,401 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:41,402 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 34 treesize of output 33 [2020-12-22 19:38:41,406 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:41,460 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:41,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:41,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:41,472 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:41,478 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:41,479 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 34 treesize of output 33 [2020-12-22 19:38:41,481 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:41,531 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:41,534 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 19:38:41,534 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:105, output treesize:75 [2020-12-22 19:38:42,145 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:42,164 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:42,164 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 51 [2020-12-22 19:38:42,167 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:42,301 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 19:38:42,302 INFO L625 ElimStorePlain]: treesize reduction 14, result has 86.8 percent of original size [2020-12-22 19:38:42,313 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:42,337 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:42,338 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 51 [2020-12-22 19:38:42,342 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:42,475 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 19:38:42,476 INFO L625 ElimStorePlain]: treesize reduction 14, result has 85.6 percent of original size [2020-12-22 19:38:42,481 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:38:42,482 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:38:42,483 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:38:42,486 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,486 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,488 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,489 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:42,490 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:38:42,492 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,493 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:42,497 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:38:42,500 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,501 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:42,505 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:42,505 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:101, output treesize:95 [2020-12-22 19:38:42,508 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:38:42,509 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:38:42,510 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:38:42,511 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,511 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,512 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,513 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:42,514 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:38:42,515 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,515 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:42,518 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:38:42,519 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,520 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:42,697 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:38:42,698 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:38:42,700 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:38:42,703 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,704 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,705 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,707 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:42,708 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:38:42,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,711 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:42,715 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:38:42,717 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:42,718 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:44,520 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-12-22 19:38:44,530 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-12-22 19:38:44,530 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:38:44,874 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-22 19:38:45,225 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-22 19:38:45,589 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-12-22 19:38:45,977 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-12-22 19:38:46,000 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-12-22 19:38:46,001 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:38:46,010 INFO L443 ElimStorePlain]: Different costs {6=[|v_#valid_45|], 10=[v_prenex_4]} [2020-12-22 19:38:46,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:46,027 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:46,077 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:46,077 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 97 [2020-12-22 19:38:46,080 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:46,360 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 19:38:46,361 INFO L625 ElimStorePlain]: treesize reduction 14, result has 94.2 percent of original size [2020-12-22 19:38:46,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:46,382 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:46,543 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 19:38:46,544 INFO L348 Elim1Store]: treesize reduction 36, result has 82.4 percent of original size [2020-12-22 19:38:46,544 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 45 treesize of output 189 [2020-12-22 19:38:46,549 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:46,862 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-22 19:38:46,863 INFO L625 ElimStorePlain]: treesize reduction 66, result has 77.9 percent of original size [2020-12-22 19:38:46,868 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-12-22 19:38:46,869 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:221, output treesize:233 [2020-12-22 19:38:47,239 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-12-22 19:38:47,250 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 2, 1] term [2020-12-22 19:38:47,250 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:38:47,253 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:47,254 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-22 19:38:47,260 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:47,261 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:47,264 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 7, 1] term [2020-12-22 19:38:47,264 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:38:47,267 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:47,268 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:38:47,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:38:47,279 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-22 19:38:47,291 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_22|], 6=[v_prenex_5], 12=[|v_#memory_$Pointer$.base_24|], 20=[v_prenex_7]} [2020-12-22 19:38:47,304 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2020-12-22 19:38:47,306 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:47,320 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2020-12-22 19:38:47,321 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:47,922 WARN L197 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-12-22 19:38:47,923 INFO L625 ElimStorePlain]: treesize reduction 16, result has 96.5 percent of original size [2020-12-22 19:38:47,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:47,947 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 0 case distinctions, treesize of input 63 treesize of output 54 [2020-12-22 19:38:47,949 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:47,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:47,968 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:47,969 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 63 treesize of output 54 [2020-12-22 19:38:47,970 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:48,224 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 19:38:48,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:48,237 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:48,241 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:48,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:48,246 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:48,246 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 32 [2020-12-22 19:38:48,247 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:48,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:48,259 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:48,261 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:48,261 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 41 [2020-12-22 19:38:48,264 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:48,724 WARN L197 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-12-22 19:38:48,725 INFO L625 ElimStorePlain]: treesize reduction 13, result has 96.5 percent of original size [2020-12-22 19:38:48,735 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:48,741 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:48,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:48,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:48,751 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:48,757 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:48,758 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 65 [2020-12-22 19:38:48,761 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:48,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:48,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:48,772 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:48,774 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:48,795 INFO L348 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2020-12-22 19:38:48,795 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 76 [2020-12-22 19:38:48,798 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:38:48,801 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:38:48,802 INFO L547 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:49,211 WARN L197 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-12-22 19:38:49,212 INFO L625 ElimStorePlain]: treesize reduction 59, result has 83.5 percent of original size [2020-12-22 19:38:49,219 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-2 vars, End of recursive call: 7 dim-0 vars, and 4 xjuncts. [2020-12-22 19:38:49,220 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:489, output treesize:270 [2020-12-22 19:38:49,624 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-12-22 19:38:50,142 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 19:38:50,932 WARN L197 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-12-22 19:38:50,943 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 4, 11, 1] term [2020-12-22 19:38:50,944 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-22 19:38:50,948 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 12, 1] term [2020-12-22 19:38:50,949 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-22 19:38:51,581 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 85 [2020-12-22 19:38:52,017 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-12-22 19:38:52,502 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-12-22 19:38:52,993 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-22 19:38:53,026 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 13, 1] term [2020-12-22 19:38:53,026 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:38:53,031 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:38:53,033 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-22 19:38:53,040 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:53,047 INFO L443 ElimStorePlain]: Different costs {10=[|v_#valid_46|], 15=[v_prenex_11]} [2020-12-22 19:38:53,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:53,062 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:53,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:53,068 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:53,108 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:53,109 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 63 [2020-12-22 19:38:53,111 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:53,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:53,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:53,128 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:53,133 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2020-12-22 19:38:53,138 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:53,594 WARN L197 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-12-22 19:38:53,596 INFO L625 ElimStorePlain]: treesize reduction 167, result has 62.6 percent of original size [2020-12-22 19:38:53,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:53,679 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:53,679 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 113 [2020-12-22 19:38:53,683 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:54,086 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-22 19:38:54,090 INFO L625 ElimStorePlain]: treesize reduction 18, result has 94.1 percent of original size [2020-12-22 19:38:54,098 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2020-12-22 19:38:54,098 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:599, output treesize:286 [2020-12-22 19:38:54,548 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-22 19:38:54,558 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 13, 2, 1] term [2020-12-22 19:38:54,559 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:38:54,566 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 2, 1] term [2020-12-22 19:38:54,567 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:38:54,577 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:38:54,578 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 15 disjuncts [2020-12-22 19:38:54,585 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-12-22 19:38:54,586 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:38:54,592 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:38:54,594 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:38:54,595 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 17 disjuncts [2020-12-22 19:38:54,612 INFO L443 ElimStorePlain]: Different costs {3=[|#valid|], 6=[v_prenex_14]} [2020-12-22 19:38:54,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:54,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:54,628 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-22 19:38:54,630 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:54,858 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 19:38:54,859 INFO L625 ElimStorePlain]: treesize reduction 168, result has 48.0 percent of original size [2020-12-22 19:38:54,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:54,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:54,892 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:54,892 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 33 [2020-12-22 19:38:54,894 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:54,966 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:54,968 INFO L443 ElimStorePlain]: Different costs {12=[v_prenex_12, |v_#memory_$Pointer$.offset_23|], 20=[v_prenex_13, |v_#memory_$Pointer$.base_25|]} [2020-12-22 19:38:54,982 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:54,982 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 76 [2020-12-22 19:38:54,986 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:55,099 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 19:38:55,100 INFO L625 ElimStorePlain]: treesize reduction 24, result has 83.3 percent of original size [2020-12-22 19:38:55,100 INFO L515 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_23| vanished before elimination [2020-12-22 19:38:55,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:55,107 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:55,108 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:55,130 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:55,131 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 94 treesize of output 97 [2020-12-22 19:38:55,136 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:55,232 INFO L625 ElimStorePlain]: treesize reduction 57, result has 66.5 percent of original size [2020-12-22 19:38:55,232 INFO L515 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.base_25| vanished before elimination [2020-12-22 19:38:55,237 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, 4 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:38:55,238 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 11 variables, input treesize:470, output treesize:113 [2020-12-22 19:38:55,526 INFO L443 ElimStorePlain]: Different costs {4=[|#memory_$Pointer$.offset|], 6=[|#memory_$Pointer$.base|]} [2020-12-22 19:38:55,533 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:55,534 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 10 [2020-12-22 19:38:55,535 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:55,582 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:55,590 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:38:55,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:38:55,598 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:55,599 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 29 [2020-12-22 19:38:55,601 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:38:55,602 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:38:55,626 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:38:55,630 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:38:55,631 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:124, output treesize:7 [2020-12-22 19:38:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:38:55,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:38:55,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 35] total 65 [2020-12-22 19:38:55,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485154367] [2020-12-22 19:38:55,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-12-22 19:38:55,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:38:55,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-12-22 19:38:55,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3948, Unknown=0, NotChecked=0, Total=4160 [2020-12-22 19:38:55,682 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 65 states. [2020-12-22 19:38:56,718 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-22 19:38:57,015 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 19:38:57,444 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-12-22 19:38:57,790 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-12-22 19:38:58,219 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-12-22 19:38:58,724 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2020-12-22 19:38:59,192 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2020-12-22 19:38:59,563 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2020-12-22 19:38:59,926 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-12-22 19:39:00,511 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 82 [2020-12-22 19:39:01,144 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 99 [2020-12-22 19:39:02,018 WARN L197 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 104 [2020-12-22 19:39:02,826 WARN L197 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 112 [2020-12-22 19:39:03,784 WARN L197 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 117 [2020-12-22 19:39:05,725 WARN L197 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 181 DAG size of output: 113 [2020-12-22 19:39:06,640 WARN L197 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 117 [2020-12-22 19:39:07,641 WARN L197 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 118 [2020-12-22 19:39:08,277 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 91 [2020-12-22 19:39:09,024 WARN L197 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 136 [2020-12-22 19:39:09,714 WARN L197 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 119 [2020-12-22 19:39:10,474 WARN L197 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 125 [2020-12-22 19:39:11,188 WARN L197 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 123 [2020-12-22 19:39:11,773 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2020-12-22 19:39:12,495 WARN L197 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 122 [2020-12-22 19:39:13,209 WARN L197 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 123 [2020-12-22 19:39:13,734 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-12-22 19:39:14,310 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-22 19:39:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:39:14,576 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2020-12-22 19:39:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-22 19:39:14,578 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 47 [2020-12-22 19:39:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:39:14,579 INFO L225 Difference]: With dead ends: 88 [2020-12-22 19:39:14,579 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:39:14,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1950 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=679, Invalid=8633, Unknown=0, NotChecked=0, Total=9312 [2020-12-22 19:39:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:39:14,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-12-22 19:39:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 19:39:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-12-22 19:39:14,585 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 47 [2020-12-22 19:39:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:39:14,585 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-12-22 19:39:14,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-12-22 19:39:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-12-22 19:39:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 19:39:14,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:39:14,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:39:14,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:39:14,788 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:39:14,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:39:14,788 INFO L82 PathProgramCache]: Analyzing trace with hash -2016353018, now seen corresponding path program 1 times [2020-12-22 19:39:14,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:39:14,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412488743] [2020-12-22 19:39:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:39:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:39:16,261 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 33 [2020-12-22 19:39:16,534 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-12-22 19:39:16,774 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-12-22 19:39:17,011 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-12-22 19:39:17,275 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 28 [2020-12-22 19:39:17,527 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 25 [2020-12-22 19:39:17,775 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 21 [2020-12-22 19:39:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:39:18,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412488743] [2020-12-22 19:39:18,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340965020] [2020-12-22 19:39:18,488 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 19:39:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:39:18,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 88 conjunts are in the unsatisfiable core [2020-12-22 19:39:18,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:39:18,651 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:39:18,651 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 16 [2020-12-22 19:39:18,653 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:39:18,682 INFO L625 ElimStorePlain]: treesize reduction 8, result has 70.4 percent of original size [2020-12-22 19:39:18,683 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 19:39:18,684 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2020-12-22 19:39:20,435 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 19:39:20,437 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:39:20,503 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:39:20,506 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:39:20,506 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:86, output treesize:97 [2020-12-22 19:39:22,487 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2020-12-22 19:39:22,489 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:39:22,589 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:39:22,591 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:39:22,592 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:166, output treesize:155 [2020-12-22 19:39:23,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:39:23,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:39:23,461 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:39:23,465 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:39:23,465 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 72 [2020-12-22 19:39:23,469 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 19:39:23,634 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 19:39:23,635 INFO L625 ElimStorePlain]: treesize reduction 13, result has 89.4 percent of original size [2020-12-22 19:39:23,638 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 19:39:23,639 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:148, output treesize:110 [2020-12-22 19:39:24,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:39:24,917 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:39:24,918 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 42 [2020-12-22 19:39:24,923 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:39:24,990 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:39:24,996 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:39:24,997 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:123, output treesize:64 [2020-12-22 19:39:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:39:26,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:39:26,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29] total 56 [2020-12-22 19:39:26,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569399373] [2020-12-22 19:39:26,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-22 19:39:26,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:39:26,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-22 19:39:26,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2992, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 19:39:26,153 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 57 states. [2020-12-22 19:39:26,922 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-12-22 19:39:27,188 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-12-22 19:39:27,595 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-12-22 19:39:28,342 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-22 19:39:28,819 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-12-22 19:39:29,437 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2020-12-22 19:39:29,933 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-12-22 19:39:30,813 WARN L197 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2020-12-22 19:39:31,870 WARN L197 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2020-12-22 19:39:33,065 WARN L197 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 85 [2020-12-22 19:39:34,403 WARN L197 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 94 [2020-12-22 19:39:35,757 WARN L197 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 99 [2020-12-22 19:39:37,103 WARN L197 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2020-12-22 19:39:38,475 WARN L197 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 101 [2020-12-22 19:39:39,866 WARN L197 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 103 [2020-12-22 19:39:41,254 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-22 19:39:43,031 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-12-22 19:39:44,285 WARN L197 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-22 19:39:45,699 WARN L197 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-22 19:39:49,111 WARN L197 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-12-22 19:39:52,525 WARN L197 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2020-12-22 19:39:54,883 WARN L197 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2020-12-22 19:39:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:39:55,712 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2020-12-22 19:39:55,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 19:39:55,713 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 47 [2020-12-22 19:39:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:39:55,714 INFO L225 Difference]: With dead ends: 85 [2020-12-22 19:39:55,714 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 19:39:55,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=537, Invalid=6105, Unknown=0, NotChecked=0, Total=6642 [2020-12-22 19:39:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 19:39:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-22 19:39:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 19:39:55,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-12-22 19:39:55,718 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-12-22 19:39:55,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:39:55,719 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-12-22 19:39:55,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-22 19:39:55,719 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-12-22 19:39:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 19:39:55,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:39:55,719 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:39:55,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 19:39:55,934 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:39:55,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:39:55,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1757894151, now seen corresponding path program 3 times [2020-12-22 19:39:55,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:39:55,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477481612] [2020-12-22 19:39:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:39:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:39:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:39:55,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477481612] [2020-12-22 19:39:55,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625015045] [2020-12-22 19:39:55,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:39:56,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 19:39:56,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:39:56,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:39:56,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:39:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 19:39:56,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:39:56,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2020-12-22 19:39:56,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926144895] [2020-12-22 19:39:56,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:39:56,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:39:56,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:39:56,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:39:56,464 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 5 states. [2020-12-22 19:39:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:39:56,479 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-12-22 19:39:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:39:56,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-22 19:39:56,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:39:56,481 INFO L225 Difference]: With dead ends: 21 [2020-12-22 19:39:56,481 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:39:56,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:39:56,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:39:56,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:39:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:39:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:39:56,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2020-12-22 19:39:56,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:39:56,482 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:39:56,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:39:56,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:39:56,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:39:56,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:39:56,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:39:56 BoogieIcfgContainer [2020-12-22 19:39:56,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:39:56,692 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:39:56,692 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:39:56,692 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:39:56,693 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:37:44" (3/4) ... [2020-12-22 19:39:56,696 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:39:56,713 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-22 19:39:56,713 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-22 19:39:56,713 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 19:39:56,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 19:39:56,761 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-simple/sll2n_remove_all.i-witness.graphml [2020-12-22 19:39:56,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:39:56,763 INFO L168 Benchmark]: Toolchain (without parser) took 134306.66 ms. Allocated memory was 156.2 MB in the beginning and 325.1 MB in the end (delta: 168.8 MB). Free memory was 130.7 MB in the beginning and 174.8 MB in the end (delta: -44.1 MB). Peak memory consumption was 126.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:39:56,766 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory was 130.0 MB in the beginning and 129.9 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:39:56,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.48 ms. Allocated memory is still 156.2 MB. Free memory was 130.5 MB in the beginning and 108.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:39:56,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.02 ms. Allocated memory is still 156.2 MB. Free memory was 108.0 MB in the beginning and 106.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:39:56,767 INFO L168 Benchmark]: Boogie Preprocessor took 77.73 ms. Allocated memory is still 156.2 MB. Free memory was 139.5 MB in the beginning and 138.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:39:56,767 INFO L168 Benchmark]: RCFGBuilder took 723.61 ms. Allocated memory is still 156.2 MB. Free memory was 138.2 MB in the beginning and 114.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:39:56,768 INFO L168 Benchmark]: TraceAbstraction took 132608.92 ms. Allocated memory was 156.2 MB in the beginning and 325.1 MB in the end (delta: 168.8 MB). Free memory was 114.1 MB in the beginning and 178.4 MB in the end (delta: -64.4 MB). Peak memory consumption was 104.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:39:56,768 INFO L168 Benchmark]: Witness Printer took 69.92 ms. Allocated memory is still 325.1 MB. Free memory was 178.4 MB in the beginning and 174.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:39:56,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory was 130.0 MB in the beginning and 129.9 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 731.48 ms. Allocated memory is still 156.2 MB. Free memory was 130.5 MB in the beginning and 108.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 72.02 ms. Allocated memory is still 156.2 MB. Free memory was 108.0 MB in the beginning and 106.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.73 ms. Allocated memory is still 156.2 MB. Free memory was 139.5 MB in the beginning and 138.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 723.61 ms. Allocated memory is still 156.2 MB. Free memory was 138.2 MB in the beginning and 114.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 132608.92 ms. Allocated memory was 156.2 MB in the beginning and 325.1 MB in the end (delta: 168.8 MB). Free memory was 114.1 MB in the beginning and 178.4 MB in the end (delta: -64.4 MB). Peak memory consumption was 104.5 MB. Max. memory is 8.0 GB. * Witness Printer took 69.92 ms. Allocated memory is still 325.1 MB. Free memory was 178.4 MB in the beginning and 174.8 MB in the end (delta: 3.7 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: 594]: 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: 594]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 595]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 587]: 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: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 593]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 605]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 593]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 595]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 587]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 593]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 609]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 597]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 593]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 605]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 21 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 21 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 132.5s, OverallIterations: 25, TraceHistogramMax: 3, AutomataDifference: 81.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 667 SDtfs, 5611 SDslu, 2403 SDs, 0 SdLazy, 6771 SolverSat, 825 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 18.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 914 GetRequests, 301 SyntacticMatches, 12 SemanticMatches, 601 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7097 ImplicationChecksByTransitivity, 92.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=23, 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, 25 MinimizatonAttempts, 284 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 45.6s InterpolantComputationTime, 1155 NumberOfCodeBlocks, 1155 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1118 ConstructedInterpolants, 196 QuantifiedInterpolants, 947407 SizeOfPredicates, 235 NumberOfNonLiveVariables, 2794 ConjunctsInSsa, 530 ConjunctsInUnsatCore, 37 InterpolantComputations, 16 PerfectInterpolantSequences, 289/499 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...