/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-ext3-properties/sll_length_check-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:32:37,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:32:37,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:32:37,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:32:37,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:32:37,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:32:37,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:32:37,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:32:37,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:32:37,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:32:37,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:32:37,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:32:37,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:32:37,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:32:37,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:32:37,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:32:37,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:32:37,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:32:37,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:32:37,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:32:37,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:32:37,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:32:37,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:32:37,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:32:37,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:32:37,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:32:37,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:32:37,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:32:37,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:32:37,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:32:37,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:32:37,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:32:37,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:32:37,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:32:37,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:32:37,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:32:37,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:32:37,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:32:37,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:32:37,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:32:37,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:32:37,549 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:32:37,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:32:37,549 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:32:37,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:32:37,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:32:37,550 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:32:37,551 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:32:37,552 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:32:37,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:32:37,552 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:32:37,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:32:37,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:32:37,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:32:37,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:32:37,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:32:37,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:32:37,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:32:37,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:32:37,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:32:37,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:32:37,555 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:32:38,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:32:38,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:32:38,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:32:38,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:32:38,060 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:32:38,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i [2020-12-23 17:32:38,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3e7633049/dfb04423fe6d4794b44a55a7c1060fd5/FLAG1090499bf [2020-12-23 17:32:38,993 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:32:38,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i [2020-12-23 17:32:39,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3e7633049/dfb04423fe6d4794b44a55a7c1060fd5/FLAG1090499bf [2020-12-23 17:32:39,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3e7633049/dfb04423fe6d4794b44a55a7c1060fd5 [2020-12-23 17:32:39,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:32:39,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:32:39,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:32:39,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:32:39,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:32:39,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:32:39" (1/1) ... [2020-12-23 17:32:39,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54327c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:39, skipping insertion in model container [2020-12-23 17:32:39,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:32:39" (1/1) ... [2020-12-23 17:32:39,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:32:39,375 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~head~0,] left hand side expression in assignment: lhs: VariableLHS[~head,] left hand side expression in assignment: lhs: VariableLHS[~head,] [2020-12-23 17:32:39,855 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i[23814,23827] [2020-12-23 17:32:39,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:32:39,875 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~head~0,] left hand side expression in assignment: lhs: VariableLHS[~head,] left hand side expression in assignment: lhs: VariableLHS[~head,] [2020-12-23 17:32:39,934 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i[23814,23827] [2020-12-23 17:32:39,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:32:40,047 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:32:40,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40 WrapperNode [2020-12-23 17:32:40,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:32:40,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:32:40,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:32:40,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:32:40,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (1/1) ... [2020-12-23 17:32:40,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (1/1) ... [2020-12-23 17:32:40,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:32:40,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:32:40,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:32:40,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:32:40,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (1/1) ... [2020-12-23 17:32:40,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (1/1) ... [2020-12-23 17:32:40,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (1/1) ... [2020-12-23 17:32:40,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (1/1) ... [2020-12-23 17:32:40,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (1/1) ... [2020-12-23 17:32:40,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (1/1) ... [2020-12-23 17:32:40,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (1/1) ... [2020-12-23 17:32:40,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:32:40,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:32:40,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:32:40,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:32:40,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:32:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 17:32:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 17:32:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:32:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 17:32:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:32:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:32:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:32:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:32:41,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:32:41,142 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-23 17:32:41,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:32:41 BoogieIcfgContainer [2020-12-23 17:32:41,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:32:41,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:32:41,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:32:41,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:32:41,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:32:39" (1/3) ... [2020-12-23 17:32:41,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7037baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:32:41, skipping insertion in model container [2020-12-23 17:32:41,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:40" (2/3) ... [2020-12-23 17:32:41,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7037baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:32:41, skipping insertion in model container [2020-12-23 17:32:41,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:32:41" (3/3) ... [2020-12-23 17:32:41,158 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_length_check-2.i [2020-12-23 17:32:41,167 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:32:41,174 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 17:32:41,202 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 17:32:41,232 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:32:41,233 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:32:41,233 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:32:41,233 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:32:41,233 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:32:41,233 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:32:41,233 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:32:41,234 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:32:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 17:32:41,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:32:41,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:41,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:41,267 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:41,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1819225437, now seen corresponding path program 1 times [2020-12-23 17:32:41,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:41,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981685405] [2020-12-23 17:32:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:41,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981685405] [2020-12-23 17:32:41,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:41,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:32:41,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767705483] [2020-12-23 17:32:41,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 17:32:41,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:41,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 17:32:41,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:32:41,512 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 17:32:41,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:41,531 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-12-23 17:32:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 17:32:41,533 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 17:32:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:41,545 INFO L225 Difference]: With dead ends: 41 [2020-12-23 17:32:41,546 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 17:32:41,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:32:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 17:32:41,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-23 17:32:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 17:32:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-12-23 17:32:41,596 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 7 [2020-12-23 17:32:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:41,597 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-12-23 17:32:41,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 17:32:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-12-23 17:32:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 17:32:41,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:41,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:41,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:32:41,599 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:41,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:41,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1213452566, now seen corresponding path program 1 times [2020-12-23 17:32:41,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:41,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328321043] [2020-12-23 17:32:41,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:41,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328321043] [2020-12-23 17:32:41,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:41,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:32:41,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450300550] [2020-12-23 17:32:41,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:32:41,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:41,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:32:41,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:32:41,695 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 3 states. [2020-12-23 17:32:41,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:41,766 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-12-23 17:32:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:32:41,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-23 17:32:41,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:41,769 INFO L225 Difference]: With dead ends: 64 [2020-12-23 17:32:41,769 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 17:32:41,770 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 [2020-12-23 17:32:41,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 17:32:41,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 37. [2020-12-23 17:32:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 17:32:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 17:32:41,779 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 9 [2020-12-23 17:32:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:41,779 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 17:32:41,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:32:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 17:32:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 17:32:41,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:41,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:41,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:32:41,782 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:41,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1213452567, now seen corresponding path program 1 times [2020-12-23 17:32:41,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:41,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300201497] [2020-12-23 17:32:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:41,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300201497] [2020-12-23 17:32:41,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:41,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:32:41,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949646454] [2020-12-23 17:32:41,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:32:41,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:41,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:32:41,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:32:41,865 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 3 states. [2020-12-23 17:32:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:41,914 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-12-23 17:32:41,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:32:41,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-23 17:32:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:41,916 INFO L225 Difference]: With dead ends: 63 [2020-12-23 17:32:41,917 INFO L226 Difference]: Without dead ends: 63 [2020-12-23 17:32:41,917 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 [2020-12-23 17:32:41,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-23 17:32:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-12-23 17:32:41,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 17:32:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-23 17:32:41,925 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 9 [2020-12-23 17:32:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:41,926 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-23 17:32:41,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:32:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-23 17:32:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 17:32:41,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:41,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:41,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:32:41,928 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:41,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:41,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2104757995, now seen corresponding path program 1 times [2020-12-23 17:32:41,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:41,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015608154] [2020-12-23 17:32:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:41,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015608154] [2020-12-23 17:32:41,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:41,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:32:41,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882705285] [2020-12-23 17:32:41,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:32:41,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:41,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:32:41,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:32:41,989 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2020-12-23 17:32:42,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:42,085 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-12-23 17:32:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:32:42,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 17:32:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:42,087 INFO L225 Difference]: With dead ends: 74 [2020-12-23 17:32:42,088 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 17:32:42,088 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 [2020-12-23 17:32:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 17:32:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 41. [2020-12-23 17:32:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 17:32:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-12-23 17:32:42,096 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 11 [2020-12-23 17:32:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:42,097 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-12-23 17:32:42,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:32:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-12-23 17:32:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 17:32:42,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:42,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:42,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:32:42,099 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash -48409076, now seen corresponding path program 1 times [2020-12-23 17:32:42,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:42,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262694227] [2020-12-23 17:32:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:32:42,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262694227] [2020-12-23 17:32:42,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:42,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:32:42,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976552451] [2020-12-23 17:32:42,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:32:42,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:42,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:32:42,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:32:42,204 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-12-23 17:32:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:42,329 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-12-23 17:32:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:32:42,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 17:32:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:42,341 INFO L225 Difference]: With dead ends: 67 [2020-12-23 17:32:42,341 INFO L226 Difference]: Without dead ends: 67 [2020-12-23 17:32:42,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:32:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-23 17:32:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 45. [2020-12-23 17:32:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 17:32:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-12-23 17:32:42,367 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 14 [2020-12-23 17:32:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:42,368 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-12-23 17:32:42,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:32:42,370 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-12-23 17:32:42,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:32:42,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:42,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:42,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:32:42,372 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:42,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:42,373 INFO L82 PathProgramCache]: Analyzing trace with hash 347063660, now seen corresponding path program 1 times [2020-12-23 17:32:42,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:42,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425176714] [2020-12-23 17:32:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:42,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425176714] [2020-12-23 17:32:42,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662712862] [2020-12-23 17:32:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:32:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:42,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 17:32:42,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:32:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:42,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:32:42,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-23 17:32:42,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054627308] [2020-12-23 17:32:42,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:32:42,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:42,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:32:42,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:32:42,722 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 7 states. [2020-12-23 17:32:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:42,872 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-12-23 17:32:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:32:42,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-23 17:32:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:42,878 INFO L225 Difference]: With dead ends: 80 [2020-12-23 17:32:42,878 INFO L226 Difference]: Without dead ends: 80 [2020-12-23 17:32:42,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:32:42,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-23 17:32:42,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 41. [2020-12-23 17:32:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 17:32:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-23 17:32:42,903 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 15 [2020-12-23 17:32:42,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:42,904 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-23 17:32:42,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:32:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-23 17:32:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:32:42,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:42,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:43,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 17:32:43,126 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:43,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:43,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1919707581, now seen corresponding path program 2 times [2020-12-23 17:32:43,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:43,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934575774] [2020-12-23 17:32:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:32:43,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934575774] [2020-12-23 17:32:43,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:43,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:32:43,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130525819] [2020-12-23 17:32:43,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:32:43,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:43,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:32:43,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:32:43,306 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-12-23 17:32:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:43,471 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-12-23 17:32:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:32:43,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-23 17:32:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:43,474 INFO L225 Difference]: With dead ends: 77 [2020-12-23 17:32:43,475 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 17:32:43,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:32:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 17:32:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 43. [2020-12-23 17:32:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 17:32:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-12-23 17:32:43,480 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 19 [2020-12-23 17:32:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:43,481 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-12-23 17:32:43,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:32:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-12-23 17:32:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:32:43,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:43,482 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:43,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:32:43,482 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:43,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1919707580, now seen corresponding path program 1 times [2020-12-23 17:32:43,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:43,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866882373] [2020-12-23 17:32:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:32:43,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866882373] [2020-12-23 17:32:43,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:43,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:32:43,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408563566] [2020-12-23 17:32:43,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:32:43,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:43,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:32:43,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:32:43,592 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2020-12-23 17:32:43,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:43,737 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-12-23 17:32:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:32:43,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-23 17:32:43,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:43,739 INFO L225 Difference]: With dead ends: 63 [2020-12-23 17:32:43,739 INFO L226 Difference]: Without dead ends: 63 [2020-12-23 17:32:43,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:32:43,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-23 17:32:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2020-12-23 17:32:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 17:32:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-12-23 17:32:43,744 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 19 [2020-12-23 17:32:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:43,745 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-12-23 17:32:43,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:32:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-12-23 17:32:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 17:32:43,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:43,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:43,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 17:32:43,747 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:43,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1774366323, now seen corresponding path program 1 times [2020-12-23 17:32:43,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:43,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321728936] [2020-12-23 17:32:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:32:43,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321728936] [2020-12-23 17:32:43,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:43,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 17:32:43,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543706513] [2020-12-23 17:32:43,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:32:43,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:43,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:32:43,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:32:43,848 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 6 states. [2020-12-23 17:32:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:43,952 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-12-23 17:32:43,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:32:43,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-23 17:32:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:43,955 INFO L225 Difference]: With dead ends: 44 [2020-12-23 17:32:43,955 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 17:32:43,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:32:43,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 17:32:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-12-23 17:32:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 17:32:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-23 17:32:43,960 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 22 [2020-12-23 17:32:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:43,960 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-23 17:32:43,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:32:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-23 17:32:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 17:32:43,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:43,961 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:43,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 17:32:43,962 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:43,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:43,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1775998621, now seen corresponding path program 1 times [2020-12-23 17:32:43,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:43,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36496296] [2020-12-23 17:32:43,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:44,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36496296] [2020-12-23 17:32:44,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045197121] [2020-12-23 17:32:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:32:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:44,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 17:32:44,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:32:44,319 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 [2020-12-23 17:32:44,321 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:44,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:44,326 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:44,327 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-23 17:32:44,372 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:44,373 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 [2020-12-23 17:32:44,376 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:44,397 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-23 17:32:44,399 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:44,399 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-12-23 17:32:44,440 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:32:44,443 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:44,455 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:44,457 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:44,458 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-12-23 17:32:44,609 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-12-23 17:32:44,611 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:44,620 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:44,625 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. [2020-12-23 17:32:44,626 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:11 [2020-12-23 17:32:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:44,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:32:44,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2020-12-23 17:32:44,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021567602] [2020-12-23 17:32:44,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 17:32:44,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:44,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 17:32:44,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-12-23 17:32:44,656 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 16 states. [2020-12-23 17:32:45,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:45,333 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-12-23 17:32:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 17:32:45,334 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-12-23 17:32:45,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:45,335 INFO L225 Difference]: With dead ends: 83 [2020-12-23 17:32:45,335 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 17:32:45,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-12-23 17:32:45,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 17:32:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 46. [2020-12-23 17:32:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 17:32:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-12-23 17:32:45,342 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 22 [2020-12-23 17:32:45,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:45,343 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-12-23 17:32:45,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 17:32:45,343 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-12-23 17:32:45,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 17:32:45,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:45,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:45,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 17:32:45,549 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:45,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1775998622, now seen corresponding path program 1 times [2020-12-23 17:32:45,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:45,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225559390] [2020-12-23 17:32:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:45,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225559390] [2020-12-23 17:32:45,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278962524] [2020-12-23 17:32:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:32:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:45,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-23 17:32:45,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:32:45,943 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 [2020-12-23 17:32:45,944 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:45,950 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:45,951 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:45,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:32:46,036 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:46,037 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 [2020-12-23 17:32:46,040 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:46,063 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-12-23 17:32:46,065 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:46,065 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:17 [2020-12-23 17:32:46,115 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:32:46,116 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:46,130 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:46,136 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:32:46,137 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:46,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:46,153 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:46,154 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:28 [2020-12-23 17:32:46,343 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-12-23 17:32:46,345 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:46,381 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:46,386 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 [2020-12-23 17:32:46,388 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:46,398 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:46,403 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:32:46,404 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:42, output treesize:14 [2020-12-23 17:32:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:46,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:32:46,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2020-12-23 17:32:46,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607895885] [2020-12-23 17:32:46,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 17:32:46,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:46,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 17:32:46,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-12-23 17:32:46,494 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 19 states. [2020-12-23 17:32:47,062 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-23 17:32:47,272 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-23 17:32:47,447 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-23 17:32:47,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:47,510 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-12-23 17:32:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 17:32:47,511 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-12-23 17:32:47,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:47,512 INFO L225 Difference]: With dead ends: 69 [2020-12-23 17:32:47,512 INFO L226 Difference]: Without dead ends: 69 [2020-12-23 17:32:47,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-12-23 17:32:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-23 17:32:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2020-12-23 17:32:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 17:32:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-23 17:32:47,520 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 22 [2020-12-23 17:32:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:47,520 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-23 17:32:47,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 17:32:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-23 17:32:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:32:47,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:47,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:47,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 17:32:47,730 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:47,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:47,731 INFO L82 PathProgramCache]: Analyzing trace with hash -928802855, now seen corresponding path program 1 times [2020-12-23 17:32:47,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:47,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509401791] [2020-12-23 17:32:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:47,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509401791] [2020-12-23 17:32:47,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965533457] [2020-12-23 17:32:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:32:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:47,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 17:32:47,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:32:47,998 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:32:47,999 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:48,007 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:48,012 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:48,015 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-12-23 17:32:48,137 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 16 treesize of output 8 [2020-12-23 17:32:48,139 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:48,145 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:48,148 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:48,149 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:4 [2020-12-23 17:32:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:48,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:32:48,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2020-12-23 17:32:48,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718758367] [2020-12-23 17:32:48,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 17:32:48,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:48,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 17:32:48,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-12-23 17:32:48,159 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 15 states. [2020-12-23 17:32:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:48,698 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-12-23 17:32:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 17:32:48,699 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-12-23 17:32:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:48,700 INFO L225 Difference]: With dead ends: 50 [2020-12-23 17:32:48,700 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 17:32:48,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-12-23 17:32:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 17:32:48,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-12-23 17:32:48,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 17:32:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-12-23 17:32:48,705 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 25 [2020-12-23 17:32:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:48,706 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-12-23 17:32:48,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 17:32:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-12-23 17:32:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:32:48,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:48,707 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:48,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:32:48,922 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:48,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:48,923 INFO L82 PathProgramCache]: Analyzing trace with hash -927170557, now seen corresponding path program 2 times [2020-12-23 17:32:48,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:48,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540997884] [2020-12-23 17:32:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:49,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540997884] [2020-12-23 17:32:49,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783862798] [2020-12-23 17:32:49,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:32:49,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:32:49,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:32:49,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-23 17:32:49,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:32:49,440 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:32:49,441 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:49,450 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:49,454 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:32:49,456 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:49,465 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:49,466 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:49,467 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2020-12-23 17:32:49,572 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:32:49,573 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:49,586 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:49,587 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:49,588 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:29 [2020-12-23 17:32:49,660 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:32:49,672 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:49,673 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2020-12-23 17:32:49,676 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:49,733 INFO L625 ElimStorePlain]: treesize reduction 12, result has 81.8 percent of original size [2020-12-23 17:32:49,740 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:32:49,755 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:49,756 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2020-12-23 17:32:49,759 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:49,823 INFO L625 ElimStorePlain]: treesize reduction 16, result has 75.8 percent of original size [2020-12-23 17:32:49,827 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:49,827 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:54, output treesize:64 [2020-12-23 17:32:50,161 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:32:50,168 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:32:50,171 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:32:50,517 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:50,548 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:50,575 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:32:50,643 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:32:50,648 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:50,649 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 40 [2020-12-23 17:32:50,652 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:32:50,655 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:32:50,657 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:32:50,749 INFO L625 ElimStorePlain]: treesize reduction 15, result has 89.1 percent of original size [2020-12-23 17:32:50,763 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:50,763 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 28 [2020-12-23 17:32:50,766 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 17:32:50,770 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:50,805 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:50,812 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:32:50,818 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:50,818 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2020-12-23 17:32:50,821 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:50,852 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:50,862 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:50,862 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2020-12-23 17:32:50,865 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:32:50,869 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 3 xjuncts. [2020-12-23 17:32:50,929 INFO L625 ElimStorePlain]: treesize reduction 8, result has 85.7 percent of original size [2020-12-23 17:32:50,936 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 17:32:50,937 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:165, output treesize:25 [2020-12-23 17:32:51,141 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:51,143 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:51,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:32:51,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2020-12-23 17:32:51,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234517686] [2020-12-23 17:32:51,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 17:32:51,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:51,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 17:32:51,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2020-12-23 17:32:51,207 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 27 states. [2020-12-23 17:32:52,355 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-23 17:32:52,761 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-12-23 17:32:53,170 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-12-23 17:32:53,820 WARN L197 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-12-23 17:32:54,167 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 84 [2020-12-23 17:32:54,675 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 92 [2020-12-23 17:32:54,995 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-12-23 17:32:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:55,565 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-12-23 17:32:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 17:32:55,567 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 25 [2020-12-23 17:32:55,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:55,568 INFO L225 Difference]: With dead ends: 94 [2020-12-23 17:32:55,569 INFO L226 Difference]: Without dead ends: 94 [2020-12-23 17:32:55,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=217, Invalid=1589, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 17:32:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-23 17:32:55,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2020-12-23 17:32:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 17:32:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-12-23 17:32:55,585 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 25 [2020-12-23 17:32:55,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:55,586 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-12-23 17:32:55,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 17:32:55,586 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-12-23 17:32:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 17:32:55,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:55,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:55,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 17:32:55,805 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:55,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash -404984653, now seen corresponding path program 2 times [2020-12-23 17:32:55,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:55,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224825509] [2020-12-23 17:32:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 17:32:55,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224825509] [2020-12-23 17:32:55,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162799990] [2020-12-23 17:32:55,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:32:56,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:32:56,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:32:56,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 17:32:56,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:32:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 17:32:56,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:32:56,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-12-23 17:32:56,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472509825] [2020-12-23 17:32:56,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 17:32:56,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:56,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 17:32:56,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:32:56,135 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 8 states. [2020-12-23 17:32:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:56,249 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2020-12-23 17:32:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:32:56,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-12-23 17:32:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:56,251 INFO L225 Difference]: With dead ends: 135 [2020-12-23 17:32:56,251 INFO L226 Difference]: Without dead ends: 135 [2020-12-23 17:32:56,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:32:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-23 17:32:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 97. [2020-12-23 17:32:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-23 17:32:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2020-12-23 17:32:56,257 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 28 [2020-12-23 17:32:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:56,257 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2020-12-23 17:32:56,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 17:32:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2020-12-23 17:32:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 17:32:56,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:56,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:56,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:32:56,476 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:56,477 INFO L82 PathProgramCache]: Analyzing trace with hash 330379154, now seen corresponding path program 1 times [2020-12-23 17:32:56,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:56,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762735455] [2020-12-23 17:32:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 17:32:56,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762735455] [2020-12-23 17:32:56,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:56,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 17:32:56,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251256353] [2020-12-23 17:32:56,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:32:56,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:56,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:32:56,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:32:56,573 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand 7 states. [2020-12-23 17:32:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:56,715 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-12-23 17:32:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:32:56,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-23 17:32:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:56,717 INFO L225 Difference]: With dead ends: 108 [2020-12-23 17:32:56,717 INFO L226 Difference]: Without dead ends: 108 [2020-12-23 17:32:56,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:32:56,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-23 17:32:56,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 98. [2020-12-23 17:32:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 17:32:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2020-12-23 17:32:56,723 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 29 [2020-12-23 17:32:56,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:56,723 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2020-12-23 17:32:56,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:32:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2020-12-23 17:32:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 17:32:56,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:56,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:56,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 17:32:56,726 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:56,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:56,726 INFO L82 PathProgramCache]: Analyzing trace with hash 330379155, now seen corresponding path program 1 times [2020-12-23 17:32:56,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:56,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792150857] [2020-12-23 17:32:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 17:32:56,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792150857] [2020-12-23 17:32:56,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:56,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 17:32:56,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117712753] [2020-12-23 17:32:56,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:32:56,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:56,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:32:56,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:32:56,817 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 7 states. [2020-12-23 17:32:57,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:57,015 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-12-23 17:32:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:32:57,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-23 17:32:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:57,017 INFO L225 Difference]: With dead ends: 106 [2020-12-23 17:32:57,018 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 17:32:57,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:32:57,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 17:32:57,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2020-12-23 17:32:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 17:32:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2020-12-23 17:32:57,023 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 29 [2020-12-23 17:32:57,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:57,023 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2020-12-23 17:32:57,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:32:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2020-12-23 17:32:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 17:32:57,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:57,025 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:57,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 17:32:57,025 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:57,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:57,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1624346598, now seen corresponding path program 3 times [2020-12-23 17:32:57,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:57,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315614531] [2020-12-23 17:32:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 17:32:57,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315614531] [2020-12-23 17:32:57,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714023578] [2020-12-23 17:32:57,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:32:57,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 17:32:57,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:32:57,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 17:32:57,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:32:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 17:32:57,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 17:32:57,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2020-12-23 17:32:57,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572784195] [2020-12-23 17:32:57,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:32:57,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:57,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:32:57,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:32:57,233 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand 6 states. [2020-12-23 17:32:57,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:57,280 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-12-23 17:32:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:32:57,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-12-23 17:32:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:57,281 INFO L225 Difference]: With dead ends: 104 [2020-12-23 17:32:57,281 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 17:32:57,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:32:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 17:32:57,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 87. [2020-12-23 17:32:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 17:32:57,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-12-23 17:32:57,285 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 29 [2020-12-23 17:32:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:57,285 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-12-23 17:32:57,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:32:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-12-23 17:32:57,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 17:32:57,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:57,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:57,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 17:32:57,500 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:57,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1651817732, now seen corresponding path program 1 times [2020-12-23 17:32:57,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:57,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091573089] [2020-12-23 17:32:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 17:32:57,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091573089] [2020-12-23 17:32:57,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:57,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 17:32:57,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113656177] [2020-12-23 17:32:57,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:32:57,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:57,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:32:57,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:32:57,577 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 7 states. [2020-12-23 17:32:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:57,677 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2020-12-23 17:32:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:32:57,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-23 17:32:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:57,679 INFO L225 Difference]: With dead ends: 90 [2020-12-23 17:32:57,680 INFO L226 Difference]: Without dead ends: 90 [2020-12-23 17:32:57,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:32:57,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-23 17:32:57,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-12-23 17:32:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 17:32:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-12-23 17:32:57,689 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 30 [2020-12-23 17:32:57,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:57,689 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-12-23 17:32:57,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:32:57,689 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-12-23 17:32:57,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 17:32:57,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:57,692 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] [2020-12-23 17:32:57,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 17:32:57,693 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:57,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:57,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1719710876, now seen corresponding path program 1 times [2020-12-23 17:32:57,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:57,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941123810] [2020-12-23 17:32:57,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 17:32:57,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941123810] [2020-12-23 17:32:57,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877904266] [2020-12-23 17:32:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:32:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:57,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 17:32:57,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:32:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 17:32:57,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:32:57,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-23 17:32:57,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752241897] [2020-12-23 17:32:57,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 17:32:57,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:57,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 17:32:57,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:32:57,871 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 8 states. [2020-12-23 17:32:57,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:57,982 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2020-12-23 17:32:57,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 17:32:57,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 17:32:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:57,983 INFO L225 Difference]: With dead ends: 95 [2020-12-23 17:32:57,983 INFO L226 Difference]: Without dead ends: 95 [2020-12-23 17:32:57,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:32:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-23 17:32:57,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2020-12-23 17:32:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 17:32:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-12-23 17:32:57,986 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 31 [2020-12-23 17:32:57,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:57,987 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-12-23 17:32:57,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 17:32:57,987 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-12-23 17:32:57,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 17:32:57,987 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:57,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:58,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:32:58,200 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:58,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:58,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1739610939, now seen corresponding path program 1 times [2020-12-23 17:32:58,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:58,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219608330] [2020-12-23 17:32:58,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 17:32:58,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219608330] [2020-12-23 17:32:58,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:32:58,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 17:32:58,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249382650] [2020-12-23 17:32:58,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:32:58,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:58,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:32:58,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:32:58,265 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 7 states. [2020-12-23 17:32:58,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:58,372 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2020-12-23 17:32:58,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:32:58,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-23 17:32:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:58,373 INFO L225 Difference]: With dead ends: 79 [2020-12-23 17:32:58,373 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 17:32:58,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:32:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 17:32:58,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-12-23 17:32:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-23 17:32:58,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2020-12-23 17:32:58,376 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 32 [2020-12-23 17:32:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:58,376 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2020-12-23 17:32:58,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:32:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2020-12-23 17:32:58,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 17:32:58,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:58,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:58,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 17:32:58,377 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:32:58,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:58,378 INFO L82 PathProgramCache]: Analyzing trace with hash -183294639, now seen corresponding path program 1 times [2020-12-23 17:32:58,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:58,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008426131] [2020-12-23 17:32:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:32:58,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008426131] [2020-12-23 17:32:58,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102057772] [2020-12-23 17:32:58,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:32:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:58,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 17:32:58,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:32:58,678 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 [2020-12-23 17:32:58,679 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:58,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:58,681 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:58,681 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-23 17:32:58,701 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:58,702 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 [2020-12-23 17:32:58,704 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:58,720 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-23 17:32:58,721 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:58,721 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-12-23 17:32:58,756 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:32:58,757 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:58,766 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:58,767 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:58,767 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-12-23 17:32:58,858 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:58,858 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 3 case distinctions, treesize of input 21 treesize of output 78 [2020-12-23 17:32:58,861 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:58,896 INFO L625 ElimStorePlain]: treesize reduction 40, result has 42.0 percent of original size [2020-12-23 17:32:58,897 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:32:58,897 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:29 [2020-12-23 17:32:58,946 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_8|], 2=[|v_#memory_$Pointer$.base_11|]} [2020-12-23 17:32:58,954 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:32:58,955 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:58,974 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:58,981 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:32:58,992 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:58,993 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2020-12-23 17:32:58,994 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,007 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,009 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:32:59,059 INFO L625 ElimStorePlain]: treesize reduction 12, result has 81.5 percent of original size [2020-12-23 17:32:59,062 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,063 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:32:59,063 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:54, output treesize:63 [2020-12-23 17:32:59,064 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,125 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,341 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2020-12-23 17:32:59,343 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:59,365 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:59,368 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. [2020-12-23 17:32:59,369 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:66, output treesize:47 [2020-12-23 17:32:59,514 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:32:59,518 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:59,519 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2020-12-23 17:32:59,521 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,524 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,525 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:32:59,544 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:59,547 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,548 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,549 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:32:59,551 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. [2020-12-23 17:32:59,552 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:24 [2020-12-23 17:32:59,553 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,554 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:32:59,555 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:32:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:32:59,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:32:59,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 24 [2020-12-23 17:32:59,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431504234] [2020-12-23 17:32:59,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 17:32:59,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:59,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 17:32:59,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-12-23 17:32:59,609 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 25 states. [2020-12-23 17:33:00,488 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-23 17:33:00,718 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-23 17:33:00,861 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-12-23 17:33:01,023 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-23 17:33:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:33:01,278 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2020-12-23 17:33:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 17:33:01,279 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2020-12-23 17:33:01,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:33:01,281 INFO L225 Difference]: With dead ends: 104 [2020-12-23 17:33:01,281 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 17:33:01,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=342, Invalid=1064, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 17:33:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 17:33:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-12-23 17:33:01,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 17:33:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-12-23 17:33:01,286 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 32 [2020-12-23 17:33:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:33:01,287 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-12-23 17:33:01,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 17:33:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-12-23 17:33:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 17:33:01,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:33:01,287 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:33:01,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:33:01,504 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:33:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:33:01,505 INFO L82 PathProgramCache]: Analyzing trace with hash -183294638, now seen corresponding path program 1 times [2020-12-23 17:33:01,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:33:01,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160162783] [2020-12-23 17:33:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:33:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:33:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:33:01,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160162783] [2020-12-23 17:33:01,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906228730] [2020-12-23 17:33:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:33:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:33:01,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 73 conjunts are in the unsatisfiable core [2020-12-23 17:33:01,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:33:01,963 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 [2020-12-23 17:33:01,964 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:01,970 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:01,972 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 [2020-12-23 17:33:01,974 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:01,979 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:01,981 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:01,981 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-12-23 17:33:02,066 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:02,066 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 [2020-12-23 17:33:02,068 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,099 INFO L625 ElimStorePlain]: treesize reduction 14, result has 66.7 percent of original size [2020-12-23 17:33:02,116 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:02,117 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 [2020-12-23 17:33:02,118 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,151 INFO L625 ElimStorePlain]: treesize reduction 14, result has 65.9 percent of original size [2020-12-23 17:33:02,152 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,152 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:27 [2020-12-23 17:33:02,211 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:33:02,212 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,230 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:02,236 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:33:02,237 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,255 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:02,257 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,257 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:42 [2020-12-23 17:33:02,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:33:02,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:33:02,403 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:02,404 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 38 [2020-12-23 17:33:02,405 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,430 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:02,457 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:02,458 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 42 [2020-12-23 17:33:02,460 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:33:02,461 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:33:02,476 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,497 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:02,498 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,498 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:56, output treesize:48 [2020-12-23 17:33:02,588 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 17:33:02,590 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,616 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:02,622 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2020-12-23 17:33:02,624 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,671 INFO L625 ElimStorePlain]: treesize reduction 4, result has 93.8 percent of original size [2020-12-23 17:33:02,673 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:02,674 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:73, output treesize:83 [2020-12-23 17:33:03,223 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:33:03,228 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:03,228 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 51 [2020-12-23 17:33:03,230 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:33:03,232 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:33:03,233 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:33:03,283 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.3 percent of original size [2020-12-23 17:33:03,287 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2020-12-23 17:33:03,289 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:03,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:03,308 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:33:03,308 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:113, output treesize:27 [2020-12-23 17:33:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:33:03,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:33:03,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2020-12-23 17:33:03,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138985492] [2020-12-23 17:33:03,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 17:33:03,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:33:03,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 17:33:03,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2020-12-23 17:33:03,472 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 31 states. [2020-12-23 17:33:04,326 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-12-23 17:33:04,533 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-12-23 17:33:04,983 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-12-23 17:33:05,452 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 106 [2020-12-23 17:33:05,677 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-12-23 17:33:06,222 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2020-12-23 17:33:06,571 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2020-12-23 17:33:06,977 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 117 [2020-12-23 17:33:07,340 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-12-23 17:33:07,883 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-12-23 17:33:08,096 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-12-23 17:33:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:33:08,102 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2020-12-23 17:33:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 17:33:08,105 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 32 [2020-12-23 17:33:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:33:08,106 INFO L225 Difference]: With dead ends: 130 [2020-12-23 17:33:08,107 INFO L226 Difference]: Without dead ends: 130 [2020-12-23 17:33:08,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=493, Invalid=1859, Unknown=0, NotChecked=0, Total=2352 [2020-12-23 17:33:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-23 17:33:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 82. [2020-12-23 17:33:08,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 17:33:08,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2020-12-23 17:33:08,110 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 32 [2020-12-23 17:33:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:33:08,110 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2020-12-23 17:33:08,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 17:33:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2020-12-23 17:33:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 17:33:08,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:33:08,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:33:08,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:33:08,312 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:33:08,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:33:08,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1673970377, now seen corresponding path program 1 times [2020-12-23 17:33:08,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:33:08,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075332595] [2020-12-23 17:33:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:33:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:33:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:33:08,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075332595] [2020-12-23 17:33:08,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163846238] [2020-12-23 17:33:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:33:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:33:08,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-23 17:33:08,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:33:08,645 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-12-23 17:33:08,646 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:08,652 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:08,653 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:08,653 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:13 [2020-12-23 17:33:08,759 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:08,760 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 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-23 17:33:08,763 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:08,791 INFO L625 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2020-12-23 17:33:08,792 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:08,792 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:24 [2020-12-23 17:33:08,845 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:33:08,846 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:08,865 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:08,870 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:33:08,871 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:08,891 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:08,893 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:08,893 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:49, output treesize:43 [2020-12-23 17:33:09,131 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 22 treesize of output 10 [2020-12-23 17:33:09,132 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:09,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:09,153 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. [2020-12-23 17:33:09,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:57, output treesize:42 [2020-12-23 17:33:09,654 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:33:09,672 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:09,673 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 47 [2020-12-23 17:33:09,675 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:33:09,676 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:33:09,676 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 17:33:09,678 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:33:09,679 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:33:09,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:09,705 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:33:09,706 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:33:09,708 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 17:33:09,710 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. [2020-12-23 17:33:09,710 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:56, output treesize:32 [2020-12-23 17:33:09,711 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:33:09,791 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:33:09,988 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 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-23 17:33:09,990 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:10,002 INFO L625 ElimStorePlain]: treesize reduction 4, result has 78.9 percent of original size [2020-12-23 17:33:10,003 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. [2020-12-23 17:33:10,003 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:15 [2020-12-23 17:33:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:33:10,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:33:10,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 33 [2020-12-23 17:33:10,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748552940] [2020-12-23 17:33:10,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 17:33:10,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:33:10,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 17:33:10,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 17:33:10,078 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand 34 states. [2020-12-23 17:33:11,204 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-12-23 17:33:11,783 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2020-12-23 17:33:12,186 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-12-23 17:33:12,782 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-12-23 17:33:14,820 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-12-23 17:33:17,825 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-23 17:33:22,439 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-23 17:33:27,366 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-12-23 17:33:31,049 WARN L197 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 123 [2020-12-23 17:33:34,686 WARN L197 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 122 [2020-12-23 17:33:45,034 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 17:33:48,344 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-23 17:33:48,666 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-23 17:33:48,885 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-23 17:33:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:33:49,906 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2020-12-23 17:33:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 17:33:49,907 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 35 [2020-12-23 17:33:49,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:33:49,908 INFO L225 Difference]: With dead ends: 110 [2020-12-23 17:33:49,908 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 17:33:49,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=550, Invalid=2748, Unknown=8, NotChecked=0, Total=3306 [2020-12-23 17:33:49,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 17:33:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2020-12-23 17:33:49,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-23 17:33:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-12-23 17:33:49,912 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 35 [2020-12-23 17:33:49,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:33:49,912 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-12-23 17:33:49,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 17:33:49,913 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-12-23 17:33:49,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 17:33:49,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:33:49,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:33:50,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 17:33:50,124 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:33:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:33:50,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1673970376, now seen corresponding path program 1 times [2020-12-23 17:33:50,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:33:50,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767677007] [2020-12-23 17:33:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:33:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:33:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:33:50,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767677007] [2020-12-23 17:33:50,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63239867] [2020-12-23 17:33:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:33:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:33:50,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 17:33:50,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:33:50,495 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:33:50,496 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:50,506 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:50,509 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:33:50,510 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:50,518 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:50,520 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:50,520 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:14 [2020-12-23 17:33:50,925 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:50,925 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2020-12-23 17:33:50,926 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:33:50,928 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:33:50,928 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:33:50,950 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:50,960 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:50,960 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2020-12-23 17:33:50,961 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-23 17:33:50,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:50,984 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:33:50,985 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:33:50,985 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:33:50,986 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:33:50,996 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 17:33:50,997 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:33:50,997 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:41 [2020-12-23 17:33:50,999 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:33:51,052 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:33:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:33:51,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:33:51,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 26 [2020-12-23 17:33:51,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663464456] [2020-12-23 17:33:51,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 17:33:51,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:33:51,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 17:33:51,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2020-12-23 17:33:51,134 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 27 states. [2020-12-23 17:33:52,365 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-23 17:33:52,573 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-12-23 17:33:52,785 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-23 17:33:52,999 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-12-23 17:33:53,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:33:53,326 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2020-12-23 17:33:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 17:33:53,329 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 35 [2020-12-23 17:33:53,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:33:53,330 INFO L225 Difference]: With dead ends: 103 [2020-12-23 17:33:53,330 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 17:33:53,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=332, Invalid=1390, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 17:33:53,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 17:33:53,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2020-12-23 17:33:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-23 17:33:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2020-12-23 17:33:53,334 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 35 [2020-12-23 17:33:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:33:53,335 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2020-12-23 17:33:53,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 17:33:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2020-12-23 17:33:53,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 17:33:53,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:33:53,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:33:53,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 17:33:53,549 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:33:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:33:53,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1628758875, now seen corresponding path program 2 times [2020-12-23 17:33:53,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:33:53,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263026201] [2020-12-23 17:33:53,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:33:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:33:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:33:53,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263026201] [2020-12-23 17:33:53,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955737315] [2020-12-23 17:33:53,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:33:53,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:33:53,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:33:53,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 58 conjunts are in the unsatisfiable core [2020-12-23 17:33:53,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:33:53,877 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:33:53,878 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:53,887 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:53,889 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:53,889 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2020-12-23 17:33:53,974 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:53,974 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-23 17:33:53,979 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:33:53,983 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:33:53,986 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:53,996 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:53,997 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:53,998 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2020-12-23 17:33:54,049 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_13|], 2=[|v_#memory_$Pointer$.base_17|]} [2020-12-23 17:33:54,053 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:33:54,056 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:54,073 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:54,078 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2020-12-23 17:33:54,079 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:54,095 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:54,096 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:54,097 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:45 [2020-12-23 17:33:54,300 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2020-12-23 17:33:54,305 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:54,321 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:54,323 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. [2020-12-23 17:33:54,323 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:59, output treesize:40 [2020-12-23 17:33:54,473 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:33:54,477 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:54,477 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2020-12-23 17:33:54,478 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:33:54,480 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:54,488 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:54,490 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:54,490 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:4 [2020-12-23 17:33:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:33:54,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:33:54,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 25 [2020-12-23 17:33:54,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811716696] [2020-12-23 17:33:54,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 17:33:54,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:33:54,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 17:33:54,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-12-23 17:33:54,501 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 25 states. [2020-12-23 17:33:55,183 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-12-23 17:33:55,516 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-12-23 17:33:55,853 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-12-23 17:33:56,024 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-23 17:33:56,348 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-12-23 17:33:56,752 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-12-23 17:33:57,070 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-12-23 17:33:57,392 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-12-23 17:33:57,730 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-12-23 17:33:57,987 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-12-23 17:33:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:33:58,258 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2020-12-23 17:33:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 17:33:58,259 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 35 [2020-12-23 17:33:58,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:33:58,260 INFO L225 Difference]: With dead ends: 114 [2020-12-23 17:33:58,260 INFO L226 Difference]: Without dead ends: 114 [2020-12-23 17:33:58,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=420, Invalid=1472, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 17:33:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-23 17:33:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94. [2020-12-23 17:33:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 17:33:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2020-12-23 17:33:58,264 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 35 [2020-12-23 17:33:58,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:33:58,264 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2020-12-23 17:33:58,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 17:33:58,264 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2020-12-23 17:33:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 17:33:58,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:33:58,265 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:33:58,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 17:33:58,480 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:33:58,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:33:58,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1627126577, now seen corresponding path program 2 times [2020-12-23 17:33:58,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:33:58,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328980282] [2020-12-23 17:33:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:33:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:33:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:33:59,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328980282] [2020-12-23 17:33:59,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984501642] [2020-12-23 17:33:59,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:33:59,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:33:59,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:33:59,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-23 17:33:59,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:33:59,180 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 [2020-12-23 17:33:59,180 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,188 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:59,189 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,190 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-23 17:33:59,253 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:33:59,253 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,266 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:59,273 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:33:59,276 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:59,287 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,288 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:26 [2020-12-23 17:33:59,322 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:59,322 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 [2020-12-23 17:33:59,324 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:33:59,326 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,339 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:59,340 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,341 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:35 [2020-12-23 17:33:59,404 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 17:33:59,406 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:59,430 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 17:33:59,432 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:59,451 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,451 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:58 [2020-12-23 17:33:59,614 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:59,614 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 21 treesize of output 66 [2020-12-23 17:33:59,616 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,675 INFO L625 ElimStorePlain]: treesize reduction 40, result has 62.3 percent of original size [2020-12-23 17:33:59,676 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:33:59,676 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:67, output treesize:66 [2020-12-23 17:33:59,765 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:33:59,766 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:33:59,792 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:59,792 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 84 [2020-12-23 17:33:59,796 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:33:59,797 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:33:59,797 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:33:59,798 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:33:59,800 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:33:59,800 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:33:59,803 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:33:59,804 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:33:59,805 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:33:59,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:33:59,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:33:59,807 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:33:59,901 INFO L625 ElimStorePlain]: treesize reduction 24, result has 78.2 percent of original size [2020-12-23 17:33:59,910 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:33:59,911 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:33:59,937 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:33:59,937 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 60 [2020-12-23 17:33:59,940 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:34:00,051 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-23 17:34:00,052 INFO L625 ElimStorePlain]: treesize reduction 32, result has 71.9 percent of original size [2020-12-23 17:34:00,055 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:00,056 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:34:00,057 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:34:00,058 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:91, output treesize:104 [2020-12-23 17:34:00,060 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:00,061 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:34:00,162 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:00,163 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:00,461 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-12-23 17:34:00,683 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-12-23 17:34:00,902 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 17:34:02,404 WARN L197 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 61 [2020-12-23 17:34:02,670 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 17:34:04,910 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 99 [2020-12-23 17:34:07,154 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 99 [2020-12-23 17:34:07,184 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 17:34:07,215 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 17:34:07,236 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 17:34:07,274 INFO L443 ElimStorePlain]: Different costs {6=[v_prenex_3], 12=[v_prenex_4, v_prenex_5, v_prenex_6, |#memory_$Pointer$.base|, |#memory_$Pointer$.offset|]} [2020-12-23 17:34:07,282 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:34:07,299 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:34:07,299 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 95 [2020-12-23 17:34:07,301 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:07,302 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:34:07,304 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:07,305 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:34:07,512 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-12-23 17:34:07,513 INFO L625 ElimStorePlain]: treesize reduction 13, result has 96.6 percent of original size [2020-12-23 17:34:07,523 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:34:07,528 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:34:07,528 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 5 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 24 [2020-12-23 17:34:07,530 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-23 17:34:07,733 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-12-23 17:34:07,734 INFO L625 ElimStorePlain]: treesize reduction 5, result has 98.6 percent of original size [2020-12-23 17:34:07,745 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:34:07,746 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:34:07,786 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:34:07,787 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 115 [2020-12-23 17:34:07,791 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:34:07,987 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-12-23 17:34:07,988 INFO L625 ElimStorePlain]: treesize reduction 33, result has 89.3 percent of original size [2020-12-23 17:34:08,013 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:34:08,013 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 43 [2020-12-23 17:34:08,016 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:34:08,016 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:34:08,017 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:34:08,017 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:34:08,018 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:34:08,019 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 17:34:08,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:34:08,030 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 3 xjuncts. [2020-12-23 17:34:08,203 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-23 17:34:08,204 INFO L625 ElimStorePlain]: treesize reduction 8, result has 96.8 percent of original size [2020-12-23 17:34:08,214 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:34:08,216 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:34:08,252 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:34:08,253 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 131 [2020-12-23 17:34:08,259 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,259 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:34:08,260 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:34:08,261 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,262 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:34:08,263 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:08,265 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:34:08,266 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:34:08,266 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:34:08,267 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,268 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,269 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,270 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,272 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:34:08,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:34:08,273 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,274 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,275 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,276 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,279 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 17:34:08,280 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:34:08,281 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:34:08,282 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,283 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:34:08,283 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:08,285 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:34:08,286 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:34:08,286 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,287 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,288 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,289 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,290 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:34:08,291 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:34:08,292 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,293 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,294 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,295 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,296 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,297 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 11 disjuncts [2020-12-23 17:34:08,298 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:34:08,299 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,300 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:34:08,301 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,302 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,303 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,304 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,305 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 11 disjuncts [2020-12-23 17:34:08,319 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,320 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,321 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 17:34:08,324 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,324 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:34:08,327 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,329 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,329 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:34:08,331 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,332 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:34:08,335 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,335 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,337 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:08,339 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:34:08,340 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:08,341 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:34:08,342 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:34:08,343 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,344 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,345 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,347 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,348 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 11 disjuncts [2020-12-23 17:34:08,349 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:08,350 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,351 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,352 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:34:08,354 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,355 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:34:08,357 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,358 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,359 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:08,360 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:34:08,361 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,361 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 17:34:08,363 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,364 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 17:34:08,367 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:34:08,368 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:34:08,368 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:34:08,369 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,370 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,371 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,371 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:34:08,372 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,373 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,373 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:34:08,374 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:34:08,375 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,376 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,380 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 17:34:08,381 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:08,382 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,383 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:34:08,384 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,385 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,386 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:34:08,388 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,389 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,389 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:34:08,393 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:08,394 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:34:08,395 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:34:08,396 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:34:08,399 INFO L547 ElimStorePlain]: Start of recursive call 6: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:34:08,550 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-12-23 17:34:08,551 INFO L625 ElimStorePlain]: treesize reduction 20, result has 88.0 percent of original size [2020-12-23 17:34:08,561 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:34:08,579 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:34:08,580 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 50 [2020-12-23 17:34:08,582 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:34:08,583 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 17:34:08,585 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-23 17:34:08,647 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:34:08,650 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:34:08,653 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:34:08,654 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:34:08,655 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,662 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 6 dim-2 vars, End of recursive call: 5 dim-0 vars, and 3 xjuncts. [2020-12-23 17:34:08,663 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 13 variables, input treesize:442, output treesize:78 [2020-12-23 17:34:08,665 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:34:08,666 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:34:08,667 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:34:08,668 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,821 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:34:08,822 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:34:08,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:34:08,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:34:08,985 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:34:08,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:34:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:34:09,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:34:09,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2020-12-23 17:34:09,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509320777] [2020-12-23 17:34:09,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 17:34:09,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:34:09,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 17:34:09,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1221, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 17:34:09,093 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 37 states. [2020-12-23 17:34:13,125 WARN L197 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2020-12-23 17:34:18,327 WARN L197 SmtUtils]: Spent 5.07 s on a formula simplification. DAG size of input: 146 DAG size of output: 141 [2020-12-23 17:34:33,865 WARN L197 SmtUtils]: Spent 11.29 s on a formula simplification. DAG size of input: 188 DAG size of output: 183 [2020-12-23 17:34:47,109 WARN L197 SmtUtils]: Spent 7.39 s on a formula simplification. DAG size of input: 194 DAG size of output: 185 [2020-12-23 17:35:21,224 WARN L197 SmtUtils]: Spent 25.95 s on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2020-12-23 17:35:46,660 WARN L197 SmtUtils]: Spent 21.27 s on a formula simplification. DAG size of input: 227 DAG size of output: 222 [2020-12-23 17:36:12,140 WARN L197 SmtUtils]: Spent 21.33 s on a formula simplification. DAG size of input: 235 DAG size of output: 224 [2020-12-23 17:36:52,676 WARN L197 SmtUtils]: Spent 36.34 s on a formula simplification. DAG size of input: 254 DAG size of output: 243