/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-dev-4f750a8 [2020-12-22 19:39:58,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:39:58,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:39:58,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:39:58,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:39:58,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:39:58,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:39:58,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:39:58,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:39:58,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:39:58,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:39:58,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:39:58,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:39:58,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:39:58,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:39:58,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:39:58,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:39:58,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:39:58,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:39:58,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:39:58,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:39:58,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:39:58,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:39:58,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:39:58,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:39:58,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:39:58,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:39:58,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:39:58,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:39:58,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:39:58,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:39:58,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:39:58,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:39:58,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:39:58,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:39:58,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:39:58,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:39:58,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:39:58,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:39:58,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:39:58,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:39:58,531 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:39:58,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:39:58,532 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:39:58,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:39:58,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:39:58,532 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:39:58,533 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:39:58,533 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:39:58,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:39:58,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:39:58,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:39:58,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:39:58,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:39:58,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:39:58,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:39:58,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:39:58,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:39:58,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:39:58,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:39:58,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:39:58,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:39:58,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:39:59,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:39:59,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:39:59,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:39:59,019 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:39:59,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i [2020-12-22 19:39:59,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758fd8b5a/b4b484ff129f4ddbb41dbeca60251530/FLAGbda2916d3 [2020-12-22 19:39:59,850 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:39:59,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i [2020-12-22 19:39:59,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758fd8b5a/b4b484ff129f4ddbb41dbeca60251530/FLAGbda2916d3 [2020-12-22 19:40:00,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758fd8b5a/b4b484ff129f4ddbb41dbeca60251530 [2020-12-22 19:40:00,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:40:00,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:40:00,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:40:00,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:40:00,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:40:00,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409749a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00, skipping insertion in model container [2020-12-22 19:40:00,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:40:00,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:40:00,562 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i[23814,23827] [2020-12-22 19:40:00,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:40:00,583 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:40:00,623 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i[23814,23827] [2020-12-22 19:40:00,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:40:00,708 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:40:00,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00 WrapperNode [2020-12-22 19:40:00,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:40:00,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:40:00,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:40:00,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:40:00,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:40:00,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:40:00,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:40:00,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:40:00,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (1/1) ... [2020-12-22 19:40:00,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:40:00,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:40:00,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:40:00,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:40:00,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:40:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:40:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 19:40:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:40:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 19:40:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:40:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:40:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:40:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:40:01,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:40:01,275 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-22 19:40:01,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:40:01 BoogieIcfgContainer [2020-12-22 19:40:01,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:40:01,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:40:01,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:40:01,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:40:01,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:40:00" (1/3) ... [2020-12-22 19:40:01,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4442f82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:40:01, skipping insertion in model container [2020-12-22 19:40:01,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:00" (2/3) ... [2020-12-22 19:40:01,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4442f82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:40:01, skipping insertion in model container [2020-12-22 19:40:01,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:40:01" (3/3) ... [2020-12-22 19:40:01,290 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_length_check-2.i [2020-12-22 19:40:01,298 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:40:01,304 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 19:40:01,336 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 19:40:01,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:40:01,390 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:40:01,390 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:40:01,390 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:40:01,390 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:40:01,391 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:40:01,391 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:40:01,391 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:40:01,414 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-22 19:40:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:40:01,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:01,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:01,426 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]=== [2020-12-22 19:40:01,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:01,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1819225437, now seen corresponding path program 1 times [2020-12-22 19:40:01,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:01,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082331785] [2020-12-22 19:40:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:01,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082331785] [2020-12-22 19:40:01,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:01,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:40:01,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181900222] [2020-12-22 19:40:01,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:40:01,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:01,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:40:01,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:40:01,677 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-22 19:40:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:01,694 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-12-22 19:40:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:40:01,696 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 19:40:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:01,706 INFO L225 Difference]: With dead ends: 41 [2020-12-22 19:40:01,706 INFO L226 Difference]: Without dead ends: 38 [2020-12-22 19:40:01,708 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 [2020-12-22 19:40:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-22 19:40:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-22 19:40:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-22 19:40:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-12-22 19:40:01,746 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 7 [2020-12-22 19:40:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:01,746 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-12-22 19:40:01,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:40:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-12-22 19:40:01,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 19:40:01,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:01,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:01,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:40:01,748 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]=== [2020-12-22 19:40:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:01,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1213452566, now seen corresponding path program 1 times [2020-12-22 19:40:01,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:01,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441263032] [2020-12-22 19:40:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:01,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441263032] [2020-12-22 19:40:01,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:01,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:40:01,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488880991] [2020-12-22 19:40:01,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:40:01,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:01,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:40:01,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:40:01,885 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 3 states. [2020-12-22 19:40:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:01,948 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-12-22 19:40:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:40:01,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-22 19:40:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:01,950 INFO L225 Difference]: With dead ends: 64 [2020-12-22 19:40:01,951 INFO L226 Difference]: Without dead ends: 64 [2020-12-22 19:40:01,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:40:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-22 19:40:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 37. [2020-12-22 19:40:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 19:40:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 19:40:01,960 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 9 [2020-12-22 19:40:01,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:01,961 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 19:40:01,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:40:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 19:40:01,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 19:40:01,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:01,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:01,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:40:01,963 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]=== [2020-12-22 19:40:01,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:01,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1213452567, now seen corresponding path program 1 times [2020-12-22 19:40:01,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:01,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325358977] [2020-12-22 19:40:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:02,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325358977] [2020-12-22 19:40:02,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:02,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:40:02,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724134188] [2020-12-22 19:40:02,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:40:02,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:02,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:40:02,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:40:02,046 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 3 states. [2020-12-22 19:40:02,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:02,113 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-12-22 19:40:02,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:40:02,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-22 19:40:02,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:02,119 INFO L225 Difference]: With dead ends: 63 [2020-12-22 19:40:02,119 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 19:40:02,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:40:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 19:40:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-12-22 19:40:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 19:40:02,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-22 19:40:02,136 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 9 [2020-12-22 19:40:02,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:02,137 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-22 19:40:02,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:40:02,138 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-22 19:40:02,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:40:02,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:02,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:02,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:40:02,140 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]=== [2020-12-22 19:40:02,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:02,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2104757995, now seen corresponding path program 1 times [2020-12-22 19:40:02,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:02,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709057709] [2020-12-22 19:40:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:02,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709057709] [2020-12-22 19:40:02,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:02,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:40:02,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396377475] [2020-12-22 19:40:02,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:40:02,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:02,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:40:02,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:40:02,230 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2020-12-22 19:40:02,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:02,285 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-12-22 19:40:02,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:40:02,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 19:40:02,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:02,287 INFO L225 Difference]: With dead ends: 74 [2020-12-22 19:40:02,287 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 19:40:02,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:40:02,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 19:40:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 41. [2020-12-22 19:40:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 19:40:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-12-22 19:40:02,298 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 11 [2020-12-22 19:40:02,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:02,298 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-12-22 19:40:02,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:40:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-12-22 19:40:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:40:02,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:02,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:02,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:40:02,300 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]=== [2020-12-22 19:40:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:02,301 INFO L82 PathProgramCache]: Analyzing trace with hash -48409076, now seen corresponding path program 1 times [2020-12-22 19:40:02,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:02,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797769859] [2020-12-22 19:40:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:40:02,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797769859] [2020-12-22 19:40:02,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:02,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:40:02,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519813253] [2020-12-22 19:40:02,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:40:02,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:02,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:40:02,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:40:02,373 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-12-22 19:40:02,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:02,431 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-12-22 19:40:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:40:02,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 19:40:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:02,433 INFO L225 Difference]: With dead ends: 67 [2020-12-22 19:40:02,433 INFO L226 Difference]: Without dead ends: 67 [2020-12-22 19:40:02,434 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 [2020-12-22 19:40:02,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-22 19:40:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 45. [2020-12-22 19:40:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:40:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-12-22 19:40:02,440 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 14 [2020-12-22 19:40:02,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:02,440 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-12-22 19:40:02,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:40:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-12-22 19:40:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:40:02,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:02,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:02,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:40:02,442 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]=== [2020-12-22 19:40:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:02,443 INFO L82 PathProgramCache]: Analyzing trace with hash 347063660, now seen corresponding path program 1 times [2020-12-22 19:40:02,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:02,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264697698] [2020-12-22 19:40:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:02,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264697698] [2020-12-22 19:40:02,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527294160] [2020-12-22 19:40:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:02,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:40:02,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:02,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:40:02,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-22 19:40:02,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887319728] [2020-12-22 19:40:02,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:40:02,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:40:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:40:02,706 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 7 states. [2020-12-22 19:40:02,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:02,788 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-12-22 19:40:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:40:02,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-22 19:40:02,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:02,790 INFO L225 Difference]: With dead ends: 80 [2020-12-22 19:40:02,790 INFO L226 Difference]: Without dead ends: 80 [2020-12-22 19:40:02,790 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 [2020-12-22 19:40:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-22 19:40:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 41. [2020-12-22 19:40:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 19:40:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-22 19:40:02,796 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 15 [2020-12-22 19:40:02,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:02,796 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-22 19:40:02,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:40:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-22 19:40:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:40:02,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:02,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:03,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 19:40:03,013 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]=== [2020-12-22 19:40:03,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:03,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1919707581, now seen corresponding path program 2 times [2020-12-22 19:40:03,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:03,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741366369] [2020-12-22 19:40:03,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:40:03,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741366369] [2020-12-22 19:40:03,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:03,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:40:03,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255105120] [2020-12-22 19:40:03,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:40:03,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:03,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:40:03,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:40:03,127 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-12-22 19:40:03,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:03,238 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-12-22 19:40:03,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:40:03,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-22 19:40:03,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:03,239 INFO L225 Difference]: With dead ends: 77 [2020-12-22 19:40:03,240 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 19:40:03,240 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 [2020-12-22 19:40:03,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 19:40:03,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 43. [2020-12-22 19:40:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 19:40:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-12-22 19:40:03,245 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 19 [2020-12-22 19:40:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:03,245 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-12-22 19:40:03,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:40:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-12-22 19:40:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:40:03,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:03,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:03,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:40:03,247 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]=== [2020-12-22 19:40:03,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:03,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1919707580, now seen corresponding path program 1 times [2020-12-22 19:40:03,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:03,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689320116] [2020-12-22 19:40:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:40:03,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689320116] [2020-12-22 19:40:03,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:03,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:40:03,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752182632] [2020-12-22 19:40:03,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:40:03,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:03,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:40:03,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:40:03,354 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2020-12-22 19:40:03,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:03,469 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-12-22 19:40:03,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:40:03,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-22 19:40:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:03,470 INFO L225 Difference]: With dead ends: 63 [2020-12-22 19:40:03,470 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 19:40:03,471 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 [2020-12-22 19:40:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 19:40:03,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2020-12-22 19:40:03,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 19:40:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-12-22 19:40:03,475 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 19 [2020-12-22 19:40:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:03,475 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-12-22 19:40:03,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:40:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-12-22 19:40:03,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:40:03,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:03,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:03,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:40:03,477 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]=== [2020-12-22 19:40:03,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:03,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1774366323, now seen corresponding path program 1 times [2020-12-22 19:40:03,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:03,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855197042] [2020-12-22 19:40:03,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:40:03,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855197042] [2020-12-22 19:40:03,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:03,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:40:03,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498115259] [2020-12-22 19:40:03,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:40:03,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:03,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:40:03,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:40:03,540 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 6 states. [2020-12-22 19:40:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:03,602 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-12-22 19:40:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:40:03,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 19:40:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:03,603 INFO L225 Difference]: With dead ends: 44 [2020-12-22 19:40:03,604 INFO L226 Difference]: Without dead ends: 44 [2020-12-22 19:40:03,604 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 [2020-12-22 19:40:03,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-22 19:40:03,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-12-22 19:40:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 19:40:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-22 19:40:03,607 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 22 [2020-12-22 19:40:03,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:03,608 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-22 19:40:03,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:40:03,608 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-22 19:40:03,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:40:03,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:03,609 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:03,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:40:03,609 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]=== [2020-12-22 19:40:03,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:03,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1775998621, now seen corresponding path program 1 times [2020-12-22 19:40:03,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:03,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767309164] [2020-12-22 19:40:03,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:03,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767309164] [2020-12-22 19:40:03,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852106307] [2020-12-22 19:40:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:03,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 19:40:03,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:03,904 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:40:03,905 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:03,908 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:03,909 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:03,909 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:40:03,953 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:03,953 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:40:03,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:03,973 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-22 19:40:03,975 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:03,975 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-12-22 19:40:04,014 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:04,015 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:04,027 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:04,029 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:04,030 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-12-22 19:40:04,158 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-12-22 19:40:04,159 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:04,166 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:04,169 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:04,169 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:11 [2020-12-22 19:40:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:04,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:40:04,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2020-12-22 19:40:04,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336284664] [2020-12-22 19:40:04,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 19:40:04,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:04,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 19:40:04,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:40:04,197 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 16 states. [2020-12-22 19:40:04,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:04,686 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-12-22 19:40:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:40:04,686 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-12-22 19:40:04,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:04,687 INFO L225 Difference]: With dead ends: 83 [2020-12-22 19:40:04,687 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 19:40:04,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-12-22 19:40:04,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 19:40:04,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 46. [2020-12-22 19:40:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:40:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-12-22 19:40:04,706 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 22 [2020-12-22 19:40:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:04,708 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-12-22 19:40:04,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 19:40:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-12-22 19:40:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:40:04,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:04,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:04,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 19:40:04,921 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]=== [2020-12-22 19:40:04,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:04,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1775998622, now seen corresponding path program 1 times [2020-12-22 19:40:04,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:04,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072115450] [2020-12-22 19:40:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:05,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072115450] [2020-12-22 19:40:05,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301558089] [2020-12-22 19:40:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:05,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 19:40:05,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:05,188 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:40:05,189 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:05,192 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:05,193 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:05,193 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 19:40:05,276 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:05,277 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:40:05,279 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:05,294 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-12-22 19:40:05,296 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:05,296 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:17 [2020-12-22 19:40:05,333 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:05,334 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:05,344 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:05,348 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:05,349 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:05,359 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:05,363 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:05,364 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:28 [2020-12-22 19:40:05,514 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-12-22 19:40:05,515 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:05,525 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:05,528 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-22 19:40:05,530 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:05,538 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:05,542 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:05,542 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:42, output treesize:14 [2020-12-22 19:40:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:05,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:40:05,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2020-12-22 19:40:05,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184746007] [2020-12-22 19:40:05,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:40:05,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:05,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:40:05,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:40:05,607 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 19 states. [2020-12-22 19:40:06,033 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-22 19:40:06,184 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-22 19:40:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:06,346 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-12-22 19:40:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:40:06,346 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-12-22 19:40:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:06,347 INFO L225 Difference]: With dead ends: 69 [2020-12-22 19:40:06,347 INFO L226 Difference]: Without dead ends: 69 [2020-12-22 19:40:06,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:40:06,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-22 19:40:06,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2020-12-22 19:40:06,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:40:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-22 19:40:06,351 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 22 [2020-12-22 19:40:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:06,352 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-22 19:40:06,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:40:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-22 19:40:06,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:40:06,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:06,353 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] [2020-12-22 19:40:06,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 19:40:06,569 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]=== [2020-12-22 19:40:06,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:06,571 INFO L82 PathProgramCache]: Analyzing trace with hash -928802855, now seen corresponding path program 1 times [2020-12-22 19:40:06,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:06,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878791924] [2020-12-22 19:40:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:06,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878791924] [2020-12-22 19:40:06,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703966774] [2020-12-22 19:40:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:06,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 19:40:06,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:06,817 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:06,818 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:06,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:06,826 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:06,827 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-12-22 19:40:06,937 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 [2020-12-22 19:40:06,939 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:06,943 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:06,946 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:06,946 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:4 [2020-12-22 19:40:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:06,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:40:06,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2020-12-22 19:40:06,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530580468] [2020-12-22 19:40:06,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 19:40:06,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:06,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 19:40:06,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:40:06,955 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 15 states. [2020-12-22 19:40:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:07,333 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-12-22 19:40:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:40:07,334 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-12-22 19:40:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:07,335 INFO L225 Difference]: With dead ends: 50 [2020-12-22 19:40:07,335 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 19:40:07,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:40:07,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 19:40:07,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-12-22 19:40:07,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:40:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-12-22 19:40:07,338 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 25 [2020-12-22 19:40:07,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:07,338 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-12-22 19:40:07,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 19:40:07,339 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-12-22 19:40:07,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:40:07,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:07,340 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:07,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:07,546 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]=== [2020-12-22 19:40:07,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:07,547 INFO L82 PathProgramCache]: Analyzing trace with hash -927170557, now seen corresponding path program 2 times [2020-12-22 19:40:07,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:07,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971437937] [2020-12-22 19:40:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:07,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971437937] [2020-12-22 19:40:07,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226281772] [2020-12-22 19:40:07,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:07,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:40:07,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:40:07,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-22 19:40:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:07,910 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:07,910 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:07,917 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:07,920 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:07,921 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:07,927 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:07,928 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:07,929 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2020-12-22 19:40:07,994 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:40:07,995 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:08,004 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:08,005 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:08,005 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:29 [2020-12-22 19:40:08,059 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:40:08,068 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:08,069 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 [2020-12-22 19:40:08,071 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:08,121 INFO L625 ElimStorePlain]: treesize reduction 12, result has 81.8 percent of original size [2020-12-22 19:40:08,128 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:40:08,138 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:08,138 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 [2020-12-22 19:40:08,141 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:08,182 INFO L625 ElimStorePlain]: treesize reduction 16, result has 75.8 percent of original size [2020-12-22 19:40:08,184 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:08,184 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:54, output treesize:64 [2020-12-22 19:40:08,462 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:40:08,467 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:40:08,471 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:40:08,784 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:08,812 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:08,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:40:08,917 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:40:08,920 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:08,921 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 [2020-12-22 19:40:08,924 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:40:08,928 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:40:08,930 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:09,000 INFO L625 ElimStorePlain]: treesize reduction 15, result has 89.1 percent of original size [2020-12-22 19:40:09,010 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:09,010 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 [2020-12-22 19:40:09,012 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:40:09,015 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:09,044 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:09,050 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:40:09,053 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:09,054 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 [2020-12-22 19:40:09,056 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:09,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:09,088 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:09,089 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 [2020-12-22 19:40:09,091 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:40:09,094 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 3 xjuncts. [2020-12-22 19:40:09,139 INFO L625 ElimStorePlain]: treesize reduction 8, result has 85.7 percent of original size [2020-12-22 19:40:09,151 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. [2020-12-22 19:40:09,152 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:165, output treesize:25 [2020-12-22 19:40:09,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:09,278 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:09,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:40:09,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2020-12-22 19:40:09,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723304536] [2020-12-22 19:40:09,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-22 19:40:09,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:09,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-22 19:40:09,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:40:09,326 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 27 states. [2020-12-22 19:40:10,230 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 19:40:10,534 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-12-22 19:40:10,910 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-12-22 19:40:11,416 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-12-22 19:40:11,700 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 84 [2020-12-22 19:40:12,122 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 92 [2020-12-22 19:40:12,387 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-12-22 19:40:12,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:12,827 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-12-22 19:40:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 19:40:12,828 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 25 [2020-12-22 19:40:12,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:12,829 INFO L225 Difference]: With dead ends: 94 [2020-12-22 19:40:12,829 INFO L226 Difference]: Without dead ends: 94 [2020-12-22 19:40:12,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=217, Invalid=1589, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 19:40:12,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-22 19:40:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2020-12-22 19:40:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 19:40:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-12-22 19:40:12,834 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 25 [2020-12-22 19:40:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:12,835 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-12-22 19:40:12,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-22 19:40:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-12-22 19:40:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:40:12,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:12,836 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] [2020-12-22 19:40:13,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 19:40:13,050 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]=== [2020-12-22 19:40:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:13,051 INFO L82 PathProgramCache]: Analyzing trace with hash -404984653, now seen corresponding path program 2 times [2020-12-22 19:40:13,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:13,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580857083] [2020-12-22 19:40:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:40:13,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580857083] [2020-12-22 19:40:13,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179601863] [2020-12-22 19:40:13,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:13,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:40:13,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:40:13,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:40:13,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:40:13,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:40:13,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-12-22 19:40:13,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053920373] [2020-12-22 19:40:13,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:40:13,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:13,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:40:13,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:40:13,307 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 8 states. [2020-12-22 19:40:13,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:13,388 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2020-12-22 19:40:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:40:13,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-12-22 19:40:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:13,389 INFO L225 Difference]: With dead ends: 135 [2020-12-22 19:40:13,389 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 19:40:13,390 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 [2020-12-22 19:40:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 19:40:13,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 97. [2020-12-22 19:40:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-22 19:40:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2020-12-22 19:40:13,413 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 28 [2020-12-22 19:40:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:13,413 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2020-12-22 19:40:13,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:40:13,413 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2020-12-22 19:40:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:40:13,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:13,415 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] [2020-12-22 19:40:13,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:13,626 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]=== [2020-12-22 19:40:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:13,627 INFO L82 PathProgramCache]: Analyzing trace with hash 330379154, now seen corresponding path program 1 times [2020-12-22 19:40:13,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:13,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248863112] [2020-12-22 19:40:13,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:40:13,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248863112] [2020-12-22 19:40:13,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:13,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:40:13,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147751165] [2020-12-22 19:40:13,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:40:13,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:13,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:40:13,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:40:13,698 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand 7 states. [2020-12-22 19:40:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:13,827 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-12-22 19:40:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:40:13,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-22 19:40:13,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:13,831 INFO L225 Difference]: With dead ends: 108 [2020-12-22 19:40:13,831 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 19:40:13,831 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 [2020-12-22 19:40:13,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 19:40:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 98. [2020-12-22 19:40:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-22 19:40:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2020-12-22 19:40:13,843 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 29 [2020-12-22 19:40:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:13,844 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2020-12-22 19:40:13,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:40:13,844 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2020-12-22 19:40:13,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:40:13,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:13,850 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] [2020-12-22 19:40:13,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:40:13,851 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]=== [2020-12-22 19:40:13,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:13,851 INFO L82 PathProgramCache]: Analyzing trace with hash 330379155, now seen corresponding path program 1 times [2020-12-22 19:40:13,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:13,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440769113] [2020-12-22 19:40:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:40:13,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440769113] [2020-12-22 19:40:13,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:13,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:40:13,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749401477] [2020-12-22 19:40:13,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:40:13,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:13,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:40:13,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:40:13,939 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 7 states. [2020-12-22 19:40:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:14,075 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-12-22 19:40:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:40:14,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-22 19:40:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:14,077 INFO L225 Difference]: With dead ends: 106 [2020-12-22 19:40:14,077 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 19:40:14,077 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 [2020-12-22 19:40:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 19:40:14,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2020-12-22 19:40:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:40:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2020-12-22 19:40:14,081 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 29 [2020-12-22 19:40:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:14,081 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2020-12-22 19:40:14,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:40:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2020-12-22 19:40:14,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:40:14,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:14,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:14,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:40:14,083 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]=== [2020-12-22 19:40:14,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:14,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1624346598, now seen corresponding path program 3 times [2020-12-22 19:40:14,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:14,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492274331] [2020-12-22 19:40:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:14,128 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:40:14,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492274331] [2020-12-22 19:40:14,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862341071] [2020-12-22 19:40:14,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:14,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 19:40:14,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:40:14,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:40:14,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:40:14,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:40:14,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2020-12-22 19:40:14,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830145342] [2020-12-22 19:40:14,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:40:14,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:14,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:40:14,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:40:14,243 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand 6 states. [2020-12-22 19:40:14,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:14,285 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-12-22 19:40:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:40:14,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-12-22 19:40:14,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:14,287 INFO L225 Difference]: With dead ends: 104 [2020-12-22 19:40:14,287 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 19:40:14,287 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 [2020-12-22 19:40:14,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 19:40:14,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 87. [2020-12-22 19:40:14,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-22 19:40:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-12-22 19:40:14,290 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 29 [2020-12-22 19:40:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:14,291 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-12-22 19:40:14,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:40:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-12-22 19:40:14,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:40:14,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:14,292 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] [2020-12-22 19:40:14,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 19:40:14,508 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]=== [2020-12-22 19:40:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:14,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1651817732, now seen corresponding path program 1 times [2020-12-22 19:40:14,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:14,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939732406] [2020-12-22 19:40:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:40:14,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939732406] [2020-12-22 19:40:14,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:14,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:40:14,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24169498] [2020-12-22 19:40:14,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:40:14,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:14,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:40:14,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:40:14,576 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 7 states. [2020-12-22 19:40:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:14,646 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2020-12-22 19:40:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:40:14,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-22 19:40:14,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:14,648 INFO L225 Difference]: With dead ends: 90 [2020-12-22 19:40:14,648 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:40:14,648 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 [2020-12-22 19:40:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:40:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-12-22 19:40:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-22 19:40:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-12-22 19:40:14,651 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 30 [2020-12-22 19:40:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:14,652 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-12-22 19:40:14,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:40:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-12-22 19:40:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:40:14,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:14,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:14,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:40:14,653 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]=== [2020-12-22 19:40:14,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:14,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1719710876, now seen corresponding path program 1 times [2020-12-22 19:40:14,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:14,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406430083] [2020-12-22 19:40:14,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 19:40:14,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406430083] [2020-12-22 19:40:14,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491307588] [2020-12-22 19:40:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:14,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:40:14,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 19:40:14,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:40:14,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 19:40:14,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235455502] [2020-12-22 19:40:14,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:40:14,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:14,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:40:14,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:40:14,809 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 8 states. [2020-12-22 19:40:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:14,918 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2020-12-22 19:40:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:40:14,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 19:40:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:14,920 INFO L225 Difference]: With dead ends: 95 [2020-12-22 19:40:14,920 INFO L226 Difference]: Without dead ends: 95 [2020-12-22 19:40:14,920 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 [2020-12-22 19:40:14,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-22 19:40:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2020-12-22 19:40:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 19:40:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-12-22 19:40:14,923 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 31 [2020-12-22 19:40:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:14,924 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-12-22 19:40:14,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:40:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-12-22 19:40:14,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:40:14,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:14,925 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] [2020-12-22 19:40:15,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:15,139 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]=== [2020-12-22 19:40:15,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:15,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1739610939, now seen corresponding path program 1 times [2020-12-22 19:40:15,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:15,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507174469] [2020-12-22 19:40:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 19:40:15,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507174469] [2020-12-22 19:40:15,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:40:15,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:40:15,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222763412] [2020-12-22 19:40:15,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:40:15,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:15,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:40:15,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:40:15,220 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 7 states. [2020-12-22 19:40:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:15,327 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2020-12-22 19:40:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:40:15,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-22 19:40:15,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:15,328 INFO L225 Difference]: With dead ends: 79 [2020-12-22 19:40:15,328 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 19:40:15,329 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 [2020-12-22 19:40:15,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 19:40:15,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-12-22 19:40:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-22 19:40:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2020-12-22 19:40:15,331 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 32 [2020-12-22 19:40:15,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:15,332 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2020-12-22 19:40:15,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:40:15,332 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2020-12-22 19:40:15,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:40:15,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:15,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:15,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:40:15,333 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]=== [2020-12-22 19:40:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash -183294639, now seen corresponding path program 1 times [2020-12-22 19:40:15,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:15,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442924150] [2020-12-22 19:40:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:40:15,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442924150] [2020-12-22 19:40:15,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059651738] [2020-12-22 19:40:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:15,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-22 19:40:15,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:15,579 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:40:15,580 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:15,581 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:15,582 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:15,582 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 19:40:15,598 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:15,598 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:40:15,600 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:15,612 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-22 19:40:15,613 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:15,614 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-12-22 19:40:15,641 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:15,642 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:15,649 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:15,650 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:15,651 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-12-22 19:40:15,726 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:15,727 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 [2020-12-22 19:40:15,729 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:15,758 INFO L625 ElimStorePlain]: treesize reduction 40, result has 42.0 percent of original size [2020-12-22 19:40:15,759 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:15,759 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:29 [2020-12-22 19:40:15,802 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_8|], 2=[|v_#memory_$Pointer$.base_11|]} [2020-12-22 19:40:15,807 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:15,807 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:15,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:15,831 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:40:15,840 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:15,841 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 [2020-12-22 19:40:15,842 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:15,844 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:15,845 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:15,890 INFO L625 ElimStorePlain]: treesize reduction 12, result has 81.5 percent of original size [2020-12-22 19:40:15,892 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:15,893 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:15,893 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:54, output treesize:63 [2020-12-22 19:40:15,894 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:15,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:16,177 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 [2020-12-22 19:40:16,179 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:16,195 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:16,199 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:16,199 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:66, output treesize:47 [2020-12-22 19:40:16,343 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:40:16,347 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:16,347 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 [2020-12-22 19:40:16,349 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:16,351 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:16,352 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:16,368 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:16,372 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:16,373 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:16,375 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:40:16,377 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:16,377 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:24 [2020-12-22 19:40:16,379 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:16,380 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:16,381 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:40:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:40:16,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:40:16,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 24 [2020-12-22 19:40:16,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402594405] [2020-12-22 19:40:16,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 19:40:16,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:16,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 19:40:16,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:40:16,411 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 25 states. [2020-12-22 19:40:17,098 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-22 19:40:17,288 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-22 19:40:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:17,761 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2020-12-22 19:40:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 19:40:17,762 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2020-12-22 19:40:17,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:17,764 INFO L225 Difference]: With dead ends: 104 [2020-12-22 19:40:17,764 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 19:40:17,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=342, Invalid=1064, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 19:40:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 19:40:17,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-12-22 19:40:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:40:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-12-22 19:40:17,769 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 32 [2020-12-22 19:40:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:17,770 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-12-22 19:40:17,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 19:40:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-12-22 19:40:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:40:17,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:17,770 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:40:17,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:17,983 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]=== [2020-12-22 19:40:17,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:17,985 INFO L82 PathProgramCache]: Analyzing trace with hash -183294638, now seen corresponding path program 1 times [2020-12-22 19:40:17,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:17,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461290249] [2020-12-22 19:40:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:40:18,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461290249] [2020-12-22 19:40:18,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588983063] [2020-12-22 19:40:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:18,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 73 conjunts are in the unsatisfiable core [2020-12-22 19:40:18,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:18,424 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:40:18,424 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,429 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,432 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:40:18,432 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,441 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,442 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,442 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-12-22 19:40:18,515 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,516 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:40:18,517 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,540 INFO L625 ElimStorePlain]: treesize reduction 14, result has 66.7 percent of original size [2020-12-22 19:40:18,553 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,554 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-22 19:40:18,555 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,580 INFO L625 ElimStorePlain]: treesize reduction 14, result has 65.9 percent of original size [2020-12-22 19:40:18,580 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,581 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:27 [2020-12-22 19:40:18,627 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:18,627 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,641 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,646 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:18,646 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,660 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,660 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:42 [2020-12-22 19:40:18,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:40:18,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:40:18,787 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,788 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 [2020-12-22 19:40:18,791 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,811 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,828 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,829 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 [2020-12-22 19:40:18,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:40:18,831 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:40:18,836 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,850 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,851 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,852 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:56, output treesize:48 [2020-12-22 19:40:18,950 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 [2020-12-22 19:40:18,951 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:18,972 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:18,978 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 [2020-12-22 19:40:18,980 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:19,020 INFO L625 ElimStorePlain]: treesize reduction 4, result has 93.8 percent of original size [2020-12-22 19:40:19,021 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:19,021 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:73, output treesize:83 [2020-12-22 19:40:19,457 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:40:19,460 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:19,461 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 [2020-12-22 19:40:19,463 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:40:19,464 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:40:19,465 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:19,505 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.3 percent of original size [2020-12-22 19:40:19,508 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 [2020-12-22 19:40:19,510 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:19,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:19,527 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. [2020-12-22 19:40:19,527 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:113, output treesize:27 [2020-12-22 19:40:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:40:19,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:40:19,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2020-12-22 19:40:19,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6084653] [2020-12-22 19:40:19,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-22 19:40:19,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:19,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-22 19:40:19,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2020-12-22 19:40:19,657 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 31 states. [2020-12-22 19:40:20,374 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-12-22 19:40:20,546 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-12-22 19:40:20,925 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-12-22 19:40:21,325 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 106 [2020-12-22 19:40:21,515 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-12-22 19:40:21,979 WARN L197 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2020-12-22 19:40:22,275 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2020-12-22 19:40:22,625 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 117 [2020-12-22 19:40:22,930 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-12-22 19:40:23,417 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-12-22 19:40:23,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:40:23,604 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2020-12-22 19:40:23,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 19:40:23,607 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 32 [2020-12-22 19:40:23,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:40:23,608 INFO L225 Difference]: With dead ends: 130 [2020-12-22 19:40:23,608 INFO L226 Difference]: Without dead ends: 130 [2020-12-22 19:40:23,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=493, Invalid=1859, Unknown=0, NotChecked=0, Total=2352 [2020-12-22 19:40:23,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-22 19:40:23,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 82. [2020-12-22 19:40:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:40:23,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2020-12-22 19:40:23,613 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 32 [2020-12-22 19:40:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:40:23,613 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2020-12-22 19:40:23,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-22 19:40:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2020-12-22 19:40:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:40:23,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:40:23,614 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] [2020-12-22 19:40:23,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:23,828 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]=== [2020-12-22 19:40:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:40:23,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1673970377, now seen corresponding path program 1 times [2020-12-22 19:40:23,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:40:23,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944615669] [2020-12-22 19:40:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:40:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:24,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944615669] [2020-12-22 19:40:24,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533321225] [2020-12-22 19:40:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:40:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:40:24,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-22 19:40:24,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:40:24,083 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 [2020-12-22 19:40:24,084 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:24,089 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:24,091 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:24,091 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:13 [2020-12-22 19:40:24,198 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:24,199 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 [2020-12-22 19:40:24,200 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:24,226 INFO L625 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2020-12-22 19:40:24,227 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:24,227 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:24 [2020-12-22 19:40:24,278 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:24,279 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:24,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:24,299 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:40:24,299 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:24,317 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:24,319 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:40:24,319 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:49, output treesize:43 [2020-12-22 19:40:24,545 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 [2020-12-22 19:40:24,547 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:24,568 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:24,569 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:24,569 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:57, output treesize:42 [2020-12-22 19:40:25,003 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:40:25,017 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:25,017 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 [2020-12-22 19:40:25,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:40:25,020 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:40:25,021 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 19:40:25,023 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:40:25,024 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:25,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:40:25,047 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:40:25,049 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:40:25,051 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 19:40:25,057 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:25,057 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:56, output treesize:32 [2020-12-22 19:40:25,058 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:40:25,122 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:40:25,286 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 [2020-12-22 19:40:25,288 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:40:25,298 INFO L625 ElimStorePlain]: treesize reduction 4, result has 78.9 percent of original size [2020-12-22 19:40:25,299 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:40:25,299 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:15 [2020-12-22 19:40:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:40:25,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:40:25,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 33 [2020-12-22 19:40:25,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222869297] [2020-12-22 19:40:25,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-22 19:40:25,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:40:25,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-22 19:40:25,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 19:40:25,374 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand 34 states. [2020-12-22 19:40:26,315 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-12-22 19:40:26,812 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2020-12-22 19:40:27,157 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-12-22 19:40:27,679 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-12-22 19:40:29,678 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-12-22 19:40:32,632 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-22 19:40:37,321 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-22 19:40:42,410 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-12-22 19:40:46,109 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 123 [2020-12-22 19:40:49,911 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 122 [2020-12-22 19:41:03,783 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-22 19:41:04,075 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-22 19:41:04,280 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-22 19:41:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:41:05,324 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2020-12-22 19:41:05,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 19:41:05,325 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 35 [2020-12-22 19:41:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:41:05,326 INFO L225 Difference]: With dead ends: 110 [2020-12-22 19:41:05,326 INFO L226 Difference]: Without dead ends: 110 [2020-12-22 19:41:05,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=550, Invalid=2748, Unknown=8, NotChecked=0, Total=3306 [2020-12-22 19:41:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-22 19:41:05,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2020-12-22 19:41:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 19:41:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-12-22 19:41:05,331 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 35 [2020-12-22 19:41:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:41:05,331 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-12-22 19:41:05,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-22 19:41:05,331 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-12-22 19:41:05,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:41:05,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:41:05,332 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] [2020-12-22 19:41:05,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 19:41:05,533 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]=== [2020-12-22 19:41:05,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:41:05,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1673970376, now seen corresponding path program 1 times [2020-12-22 19:41:05,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:41:05,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024574838] [2020-12-22 19:41:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:41:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:41:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:41:05,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024574838] [2020-12-22 19:41:05,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164314462] [2020-12-22 19:41:05,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:41:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:41:05,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-22 19:41:05,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:41:05,890 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:41:05,891 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:05,899 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:05,908 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:41:05,909 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:05,916 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:05,918 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:41:05,918 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:14 [2020-12-22 19:41:06,274 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:06,275 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 [2020-12-22 19:41:06,276 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:06,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:06,278 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:41:06,293 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:06,301 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:06,302 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 [2020-12-22 19:41:06,303 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-22 19:41:06,319 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:06,320 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:06,321 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:41:06,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:41:06,323 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:06,324 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-22 19:41:06,325 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:41:06,326 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:41 [2020-12-22 19:41:06,327 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:06,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:41:06,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:41:06,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 26 [2020-12-22 19:41:06,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781139798] [2020-12-22 19:41:06,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-22 19:41:06,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:41:06,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-22 19:41:06,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:41:06,455 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 27 states. [2020-12-22 19:41:07,788 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-12-22 19:41:07,965 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-22 19:41:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:41:08,433 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2020-12-22 19:41:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 19:41:08,434 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 35 [2020-12-22 19:41:08,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:41:08,434 INFO L225 Difference]: With dead ends: 103 [2020-12-22 19:41:08,435 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 19:41:08,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=332, Invalid=1390, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 19:41:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 19:41:08,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2020-12-22 19:41:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-22 19:41:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2020-12-22 19:41:08,439 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 35 [2020-12-22 19:41:08,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:41:08,439 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2020-12-22 19:41:08,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-22 19:41:08,439 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2020-12-22 19:41:08,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:41:08,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:41:08,440 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] [2020-12-22 19:41:08,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 19:41:08,648 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]=== [2020-12-22 19:41:08,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:41:08,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1628758875, now seen corresponding path program 2 times [2020-12-22 19:41:08,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:41:08,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374703445] [2020-12-22 19:41:08,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:41:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:41:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:41:08,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374703445] [2020-12-22 19:41:08,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146112973] [2020-12-22 19:41:08,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:41:08,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:41:08,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:41:08,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 58 conjunts are in the unsatisfiable core [2020-12-22 19:41:08,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:41:08,963 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:41:08,963 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:08,972 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:08,973 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:41:08,973 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2020-12-22 19:41:09,041 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:09,041 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 19:41:09,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:09,043 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:09,045 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:09,053 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:09,054 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:41:09,054 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2020-12-22 19:41:09,092 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_13|], 2=[|v_#memory_$Pointer$.base_17|]} [2020-12-22 19:41:09,096 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:41:09,097 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:09,113 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:09,118 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 [2020-12-22 19:41:09,120 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:09,135 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:09,136 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:41:09,136 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:45 [2020-12-22 19:41:09,333 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 [2020-12-22 19:41:09,334 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:09,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:09,350 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:41:09,350 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:59, output treesize:40 [2020-12-22 19:41:09,484 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:09,488 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:09,488 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 [2020-12-22 19:41:09,490 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:09,491 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:09,498 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:09,500 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:41:09,500 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:4 [2020-12-22 19:41:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:41:09,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:41:09,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 25 [2020-12-22 19:41:09,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536277557] [2020-12-22 19:41:09,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 19:41:09,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:41:09,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 19:41:09,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:41:09,511 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 25 states. [2020-12-22 19:41:10,123 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-12-22 19:41:10,431 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-12-22 19:41:10,727 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-12-22 19:41:10,876 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-22 19:41:11,162 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-12-22 19:41:11,513 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-12-22 19:41:11,787 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-12-22 19:41:12,067 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-12-22 19:41:12,370 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-12-22 19:41:12,609 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-12-22 19:41:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:41:12,863 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2020-12-22 19:41:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:41:12,863 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 35 [2020-12-22 19:41:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:41:12,864 INFO L225 Difference]: With dead ends: 114 [2020-12-22 19:41:12,865 INFO L226 Difference]: Without dead ends: 114 [2020-12-22 19:41:12,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=420, Invalid=1472, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 19:41:12,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-22 19:41:12,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94. [2020-12-22 19:41:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-22 19:41:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2020-12-22 19:41:12,869 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 35 [2020-12-22 19:41:12,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:41:12,869 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2020-12-22 19:41:12,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 19:41:12,869 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2020-12-22 19:41:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:41:12,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:41:12,870 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:41:13,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:41:13,081 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]=== [2020-12-22 19:41:13,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:41:13,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1627126577, now seen corresponding path program 2 times [2020-12-22 19:41:13,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:41:13,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576143695] [2020-12-22 19:41:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:41:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:41:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:41:13,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576143695] [2020-12-22 19:41:13,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344559585] [2020-12-22 19:41:13,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:41:13,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:41:13,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:41:13,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-22 19:41:13,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:41:13,810 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:41:13,811 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:13,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:13,818 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:41:13,818 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-22 19:41:13,875 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:41:13,879 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:13,889 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:13,893 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 19:41:13,894 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:13,904 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:13,905 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:41:13,906 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:26 [2020-12-22 19:41:13,940 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:13,940 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-22 19:41:13,942 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:13,944 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:13,958 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:13,959 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:41:13,959 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:35 [2020-12-22 19:41:14,030 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 [2020-12-22 19:41:14,032 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:14,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:14,057 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 [2020-12-22 19:41:14,059 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:14,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:14,080 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:41:14,081 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:58 [2020-12-22 19:41:14,239 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:14,240 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 [2020-12-22 19:41:14,242 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:14,297 INFO L625 ElimStorePlain]: treesize reduction 40, result has 62.3 percent of original size [2020-12-22 19:41:14,298 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:41:14,299 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:67, output treesize:66 [2020-12-22 19:41:14,388 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:14,390 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:14,419 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:14,420 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 [2020-12-22 19:41:14,422 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:14,424 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:14,425 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:14,425 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:14,427 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:14,428 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:14,430 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:14,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:14,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:14,434 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:14,434 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:14,435 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:41:14,529 INFO L625 ElimStorePlain]: treesize reduction 24, result has 78.2 percent of original size [2020-12-22 19:41:14,537 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:14,539 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:14,564 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:14,565 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 [2020-12-22 19:41:14,567 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:14,670 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-22 19:41:14,670 INFO L625 ElimStorePlain]: treesize reduction 32, result has 71.9 percent of original size [2020-12-22 19:41:14,673 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:14,674 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:41:14,676 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:41:14,676 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:91, output treesize:104 [2020-12-22 19:41:14,685 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:14,686 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:41:14,796 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:14,797 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:15,087 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-12-22 19:41:15,511 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:41:17,273 WARN L197 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 61 [2020-12-22 19:41:17,561 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:41:21,673 WARN L197 SmtUtils]: Spent 3.90 s on a formula simplification that was a NOOP. DAG size: 99 [2020-12-22 19:41:25,905 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 99 [2020-12-22 19:41:25,938 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-22 19:41:25,962 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-22 19:41:25,985 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:41:26,026 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|]} [2020-12-22 19:41:26,034 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:26,051 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:26,051 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 [2020-12-22 19:41:26,054 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:26,055 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 19:41:26,057 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:26,058 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:41:26,308 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-12-22 19:41:26,309 INFO L625 ElimStorePlain]: treesize reduction 13, result has 96.6 percent of original size [2020-12-22 19:41:26,321 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:26,328 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:26,329 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 [2020-12-22 19:41:26,331 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-12-22 19:41:26,585 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-12-22 19:41:26,586 INFO L625 ElimStorePlain]: treesize reduction 5, result has 98.6 percent of original size [2020-12-22 19:41:26,598 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:26,599 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:26,644 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:26,645 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 [2020-12-22 19:41:26,649 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:26,883 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-12-22 19:41:26,884 INFO L625 ElimStorePlain]: treesize reduction 33, result has 89.3 percent of original size [2020-12-22 19:41:26,913 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:26,913 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 [2020-12-22 19:41:26,916 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:26,917 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:26,917 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:26,919 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:26,920 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:26,921 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:41:26,923 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:26,925 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 3 xjuncts. [2020-12-22 19:41:27,123 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 19:41:27,124 INFO L625 ElimStorePlain]: treesize reduction 8, result has 96.8 percent of original size [2020-12-22 19:41:27,131 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:27,132 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:27,163 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:27,164 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 [2020-12-22 19:41:27,168 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,169 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 19:41:27,169 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 19:41:27,170 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,171 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 19:41:27,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:27,173 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:41:27,174 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:41:27,175 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 19:41:27,175 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,176 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,177 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,178 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,179 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:41:27,180 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:41:27,181 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,182 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,183 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,184 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,185 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,186 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-22 19:41:27,188 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 19:41:27,188 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 19:41:27,189 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,190 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 19:41:27,191 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:27,193 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:41:27,193 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 19:41:27,194 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,195 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,196 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,197 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,199 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:41:27,199 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:41:27,200 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,202 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,203 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,204 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,205 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,207 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 11 disjuncts [2020-12-22 19:41:27,208 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 19:41:27,209 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,210 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 19:41:27,211 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,211 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,213 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,214 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,214 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 11 disjuncts [2020-12-22 19:41:27,216 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,217 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,217 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,218 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-22 19:41:27,220 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,221 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:41:27,224 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,225 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,226 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,227 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:41:27,230 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,231 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:41:27,234 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,235 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,236 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:27,238 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 19:41:27,239 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:27,240 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:41:27,241 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:41:27,242 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,244 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,244 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,246 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,247 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,248 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 11 disjuncts [2020-12-22 19:41:27,249 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:27,250 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,251 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,252 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:41:27,255 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,255 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-22 19:41:27,258 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,259 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,261 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:27,263 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:41:27,264 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,265 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-22 19:41:27,267 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,268 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-22 19:41:27,272 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:41:27,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:41:27,273 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-22 19:41:27,274 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,275 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,278 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 19:41:27,279 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,280 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,282 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 19:41:27,282 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 19:41:27,283 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,288 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-22 19:41:27,289 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:27,290 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,291 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-22 19:41:27,292 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,293 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,294 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-22 19:41:27,295 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,296 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,297 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:41:27,300 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:27,302 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:41:27,303 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 19:41:27,304 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 19:41:27,307 INFO L547 ElimStorePlain]: Start of recursive call 6: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:41:27,442 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-12-22 19:41:27,443 INFO L625 ElimStorePlain]: treesize reduction 20, result has 88.0 percent of original size [2020-12-22 19:41:27,454 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 19:41:27,472 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:27,473 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 [2020-12-22 19:41:27,475 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:41:27,476 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:41:27,478 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-22 19:41:27,541 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:41:27,545 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:27,547 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:27,549 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:41:27,550 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,563 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. [2020-12-22 19:41:27,563 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 13 variables, input treesize:442, output treesize:78 [2020-12-22 19:41:27,566 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:27,567 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:27,568 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:41:27,569 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,731 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:27,732 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:41:27,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:41:27,736 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 19:41:27,902 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:27,907 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:41:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:41:27,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:41:27,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2020-12-22 19:41:27,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25814761] [2020-12-22 19:41:27,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-22 19:41:27,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:41:27,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-22 19:41:27,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1221, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 19:41:27,996 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 37 states. [2020-12-22 19:41:32,014 WARN L197 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2020-12-22 19:41:37,896 WARN L197 SmtUtils]: Spent 5.75 s on a formula simplification. DAG size of input: 146 DAG size of output: 141 [2020-12-22 19:41:55,408 WARN L197 SmtUtils]: Spent 13.26 s on a formula simplification. DAG size of input: 188 DAG size of output: 183 [2020-12-22 19:42:09,473 WARN L197 SmtUtils]: Spent 9.42 s on a formula simplification. DAG size of input: 194 DAG size of output: 185 [2020-12-22 19:42:43,540 WARN L197 SmtUtils]: Spent 25.89 s on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2020-12-22 19:43:05,073 WARN L197 SmtUtils]: Spent 17.36 s on a formula simplification. DAG size of input: 227 DAG size of output: 222 [2020-12-22 19:43:28,651 WARN L197 SmtUtils]: Spent 19.41 s on a formula simplification. DAG size of input: 235 DAG size of output: 224 [2020-12-22 19:44:08,672 WARN L197 SmtUtils]: Spent 35.82 s on a formula simplification. DAG size of input: 254 DAG size of output: 243